JP2015227808A - Hammering determination device, hammering determination method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform determination on the basis of measurement data when applying hammering satisfying predetermined prescribed criteria to a test object.SOLUTION: A hammering determination device 60 includes: an acquisition section 61 that applies external force to a test object from a hammering object by the hammering obtained by causing the hammering object to collide with the test object and measures and analyzes reflection waves to acquire hammering data representing a time change in magnifications of the external force in inspection for determining presence/absence of a defect in the test object; an analysis section 62 for analyzing the hammering data; a determination section 63 for determining whether or not the hammering satisfies the prescribed criteria on the basis of the analysis result by the analysis section 62; and a notification section 64 for, when the determination section 63 determines not to satisfy the prescribed criteria, making a notification of the determination result.

Description

  The present invention relates to an impact determination device, an impact determination method, and a program. The present invention applies, for example, an external force by striking a test object such as a bridge, and measures and analyzes the reflected wave to determine whether or not there is a defect in the test. The present invention relates to a hit determination device, a hit determination method, and a program that can be used to determine whether or not the condition is satisfied.

  Tests that determine the presence or absence of defects in a test object by applying an external force to the test object such as a bridge or the like and measuring and analyzing reflected waves are widely used.

  A related technique is disclosed in Patent Document 1. Patent Document 1 discloses a sound inspection apparatus for tunnel lining concrete. The percussion inspection device has a post mounted on a traveling body that travels in the axial direction of the tunnel, and one end portion is axially attached to the upper end portion of the post via a horizontal arm axis that is orthogonal to the axial direction of the tunnel, An arm urged by the urging means so that the other end approaches the surface of the tunnel lining concrete, and a first support shaft pivotally supported in parallel with the arm shaft at the other end of the arm that is bifurcated And a second support shaft that is pivotally supported in the middle portion of the first support shaft in a direction orthogonal to the longitudinal direction thereof, and a support that is attached to both end portions of the second support shaft so as to extend in parallel therewith. A plate, and a spacing wheel having a plurality of wheels arranged on both sides of the second support shaft, arranged in two rows parallel to the plate and rolling on the surface of the tunnel lining concrete. The support is arranged between both rows of the spacing wheels It mounted on the rate, and a single hammer striking the surface of the tunnel lining concrete.

JP 2004-205216 A

  In the above inspection, the mode of impact (such as the magnitude of external force applied to the test object) can affect the determination result. In order to increase the reliability of the inspection, it is preferable to make a predetermined determination based on measurement data when an external force is applied to the test object by striking a predetermined reference range each time.

  In the case of hitting using an apparatus as in the technique described in Patent Document 1, the variation in the mode can be reduced as compared with hitting by human power. However, even in the case of using a device, variations in the manner of hitting may occur due to the positional relationship between the device and the test object, the setting of the device, the condition of the device or the test object at that time, etc. .

  It is an object of the present invention to make a predetermined determination based on measurement data when an external force is applied to a test object by striking satisfying a predetermined criterion.

According to the present invention,
The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave An acquisition unit for acquiring hitting data indicating a change in time,
An analysis unit for analyzing the hit data;
Based on the analysis result by the analysis unit, a determination unit that determines whether the hit satisfies a predetermined criterion,
When the determination unit determines that the predetermined standard is not satisfied, a notification unit that notifies the fact,
A hit determination device having the following is provided.

Moreover, according to the present invention,
Computer
The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave An acquisition step of acquiring hitting data indicating a change in time,
An analysis step of analyzing the hit data;
Based on the analysis result in the analysis step, a determination step for determining whether the hit satisfies a predetermined criterion,
When it is determined that the predetermined standard is not satisfied in the determination step, a notification step for notifying that effect,
An execution hit judgment method is provided.

Moreover, according to the present invention,
Computer
The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave Acquisition means for acquiring batting data indicating the time change of the length,
Analyzing means for analyzing the hit data;
A determination unit that determines whether the hit satisfies a predetermined criterion based on an analysis result by the analysis unit;
When the determination means determines that the predetermined standard is not satisfied, notification means for notifying that effect,
A program for functioning as a server is provided.

  According to the present invention, determination can be performed based on measurement data when an external force is applied to a test object by striking that satisfies a predetermined criterion.

It is a figure which shows notionally an example of the hardware constitutions of the apparatus of this embodiment. It is a figure which shows an example of the functional block diagram of the impact determination apparatus of this embodiment. It is a figure which shows typically an example of the hit data of this embodiment. It is a flowchart which shows an example of the flow of a process of the hit | damage determination method of this embodiment. It is a figure which shows the striking device for a hammering test which concerns on this embodiment. It is sectional drawing which shows an example of the structure of the urging | biasing part of the striking device for a hammering inspection which concerns on this embodiment. It is a figure which shows a series of operation | movement of the striking device for a hammering test which concerns on this embodiment. It is sectional drawing which shows a series of operation | movement of the urging | biasing part of the striking device for a hammering test which concerns on this embodiment.

  First, an example of the hardware configuration of the apparatus according to the present embodiment will be described. Each unit included in the apparatus of the present embodiment includes a CPU (Central Processing Unit), a memory, and a program loaded in the memory (a program stored in the memory from the stage of shipping the apparatus in advance, a CD ( Compact Disc) and other storage media and programs downloaded from servers on the Internet, etc., storage units such as hard disks for storing the programs, and any combination of hardware and software centering on the network connection interface It is realized by. It will be understood by those skilled in the art that there are various modifications to the implementation method and apparatus.

  FIG. 1 is a diagram conceptually illustrating an example of a hardware configuration of an apparatus according to the present embodiment. As shown in the figure, the apparatus of the present embodiment includes, for example, a CPU 1A, a RAM (Random Access Memory) 2A, a ROM (Read Only Memory) 3A, a display control unit 4A, a display 5A, and an operation reception connected to each other via a bus 10A. Unit 6A, operation unit 7A, communication unit 8A, auxiliary storage device 9A, and the like. Although not shown, other elements such as an input / output interface connected to an external device by wire, a microphone, and a speaker may be provided.

  The CPU 1A controls the entire computer of the apparatus together with each element. The ROM 3A includes an area for storing programs for operating the computer, various application programs, various setting data used when these programs operate. The RAM 2A includes an area for temporarily storing data, such as a work area for operating a program. The auxiliary storage device 9A is an HDD (Hard Disc Drive), for example, and can store a large amount of data.

  The display 5A is, for example, a display device (LED (Light Emitting Diode) display, liquid crystal display, organic EL (Electro Luminescence) display, etc.). The display 5A may be a touch panel display integrated with a touch pad. The display control unit 4A reads data stored in a VRAM (Video RAM), performs predetermined processing on the read data, and then sends the data to the display 5A to display various screens. The operation reception unit 6A receives various operations via the operation unit 7A. The operation unit 7A includes operation keys, operation buttons, switches, a jog dial, a touch panel display, a keyboard, and the like. The communication unit 8A is wired and / or wirelessly connected to a network such as the Internet or a LAN (Local Area Network) and communicates with other electronic devices.

  Hereinafter, this embodiment will be described. Note that the functional block diagram used in the following description of the embodiment shows functional unit blocks rather than hardware unit configurations. In these drawings, each device is described as being realized by one device, but the means for realizing it is not limited to this. That is, it may be a physically separated configuration or a logically separated configuration. In addition, the same code | symbol is attached | subjected to the same component and description is abbreviate | omitted suitably.

<First Embodiment>
First, an outline of the present embodiment will be described.

  The impact determination device, impact determination method, and program according to the present embodiment apply an external force due to impact to a test object that is a building such as a bridge, and measure the reflected wave to determine whether there is a defect in the test object. A structure for determining whether or not the hit in the inspection to be determined satisfies a predetermined standard is provided.

  In the above inspection, if the mode of impact is different, the details of the external force applied to the test object (the magnitude of the force and the time during which the external force is applied) are different, which may affect the determination result of the presence or absence of defects.

  For example, due to the magnitude of the force, the distance over which the vibration wave travels within the test object may vary. For this reason, if the magnitude of the force varies, the depth (distance) from the striking point where the vibration wave reaches varies. As a result, the areas where the presence or absence of defects in the test object is determined vary.

  Further, the frequency of the vibration wave is different due to the time during which the external force is applied. When the frequency of the vibration wave is different, the result of whether the wave is reflected by a defect existing in the test object or passes through the defect may be different. For this reason, if the time during which the external force is applied varies, the frequency of the vibration wave varies, and as a result, the details (size, shape, etc.) of the defect that can be detected vary.

  For each inspection, if the depth (distance) from the hit point where the presence / absence of a defect is determined in the test object and the details (size, shape, etc.) of the detectable defect vary, the reliability of the inspection becomes low. .

  In order to eliminate the inconvenience, in the present embodiment, whether or not the hitting satisfies a predetermined standard by acquiring and analyzing hitting data indicating a temporal change in the magnitude of the external force applied to the test object by hitting. Determine. And when not satisfy | filling a predetermined | prescribed reference | standard, the alert | report which shows that is performed.

  According to this embodiment as described above, the operator can easily grasp whether or not the hit satisfies a predetermined standard. When the hit satisfies a predetermined standard, measurement data obtained by the hit can be employed to determine the presence or absence of a defect. On the other hand, when the hit does not satisfy the predetermined reference, the measurement data obtained by the hit is not adopted, and the hit and data measurement at that position can be repeated until the hit satisfies the predetermined reference. For this reason, according to this embodiment, it is possible to make a determination based on measurement data obtained when an external force is applied to a test object by an impact that satisfies a predetermined criterion each time.

  Further, according to the present embodiment, it is possible to determine whether the hit satisfies a predetermined criterion based on the digitized data, instead of determining with a human sense. For this reason, it is possible to improve the reliability of the determination as to whether or not the hit satisfies a predetermined standard.

  Next, details of the configuration of the present embodiment will be described. In FIG. 2, the hit determination device 60 of the present embodiment includes an acquisition unit 61, an analysis unit 62, a determination unit 63, and a notification unit 64.

  The acquisition unit 61 applies the external force to the test object from the impact imparting object by hitting the test object to collide with the impact imparted object, and measures and analyzes the reflected wave to determine the presence or absence of a defect in the test object. The hit data indicating the time change of the magnitude of the external force is acquired.

  FIG. 3 shows an example of the hit data. In the example shown in the drawing, a graph in which the magnitude of the external force is taken on the vertical axis and time is taken on the horizontal axis shows the time change of the magnitude of the external force in one collision. Here, “external force in one collision” will be described. When the impact imparting object collides with the test object, the test object and the impact imparting object come into contact with each other, and application of an external force from the impact imparting object to the test object starts. Thereafter, the impact imparting object moves in a direction away from the test object due to the force of pushing back from the test object, and the impact imparting object and the test object are separated from each other again. As a result, the application of the external force from the batting grant to the test object is completed. The external force applied to the test object from the impact imparting object through the contact point from the time of contact to the time of leaving immediately thereafter is the external force in one collision.

  The test object may be a building such as a bridge, a tunnel, a building, or the like. The defect is, for example, a crack or a hole. As the hit imparting object, any object conventionally used in the inspection, such as a hammer, can be used. The means for causing the hit imparting object to collide with the test object may be a means using an apparatus or a means for performing manually. In the following embodiment, an example of means using the apparatus will be described. Although the reflected wave can be measured using a vibration sensor or a speaker, the details are not particularly limited in the present embodiment. The reflected wave analyzing means is not particularly limited in the present embodiment. The hit data is obtained by, for example, measurement using a force sensor or predetermined calculation processing. For example, a force sensor is installed on the impact imparting object and measured. An example will be described in the following embodiment. The details of the type of force sensor to be used, the method of using the force sensor, and the arithmetic processing are not particularly limited.

Returning to FIG. 2, the analysis unit 62 analyzes the hit data acquired by the acquisition unit 61. For example, the analysis unit 62 analyzes the hit data and specifies at least one value of the duration t _c , which is the time during which the external force continues in one collision, and the magnitude F of the external force in one collision. . Analysis unit 62 is, for example, as the magnitude F of the external force, may identify the maximum value F _m of the size of the external force applied to the subject matter in a single collision. Incidentally, the analyzing unit 62, instead of the maximum value F _m, the value equivalent thereto may be specified as the magnitude F of the external force.

There are various methods for calculating the duration t _c , but an example will be described below. For example, the analysis unit 62 compares the magnitude of the external force of the hit data with a predetermined value in order along the time axis, and first determines when the external force is applied to the subject when the predetermined value is exceeded. May be specified. Moreover, the analysis part 62 may specify the time when it first fell below the predetermined value after that as an end time of the state where an external force is applied to the test object. Then, the analysis unit 62 may calculate the time from the identified start time point to the end time point as the duration time t _c . The predetermined value may be “0”, or an arbitrary small value larger than “0” may be set as the predetermined value in order to remove a noise component.

The determination unit 63 determines whether the hit indicated by the hit data satisfies a predetermined criterion based on the analysis result by the analysis unit 62. For example, when the value (at least one of t _c and F) specified by the analysis unit 62 is within a predetermined reference range, the determination unit 63 determines that the hit satisfies a predetermined reference. In this case, the determination unit 63 holds information indicating a predetermined reference range in advance. Then, it is determined whether the value specified by the analysis unit 62 is included in a predetermined reference range held in advance. For example, the predetermined standard can be determined by the operator based on the type of the test object, the required performance for the inspection, and the like, and can be held in the determination unit 63.

Note that the determination unit 63 may calculate the degree of deviation between the analysis result and the predetermined reference when the analysis result does not satisfy the predetermined reference. For example, the value specified by the analysis unit 62 (at least one of t _c and F) and the representative value of a predetermined reference range (for example, the lower limit value, the upper limit value, the median value, and the value specified by the analysis unit 62 are the most. A difference from a close value or the like may be calculated as the degree of deviation. Alternatively, a representative value (e.g., a lower limit value, an upper limit value, a median value, or a value closest to the value specified by the analysis unit 62) with respect to a value (at least one of _tc and F) specified by the analysis unit 62 Value), or vice versa, may be calculated as the degree of deviation.

  When the determination unit 63 determines that the determination unit 63 is not within the predetermined reference range, the notification unit 64 notifies that fact. The notification means is not particularly limited, and can be realized by employing any output device such as a lamp, a speaker, a vibration, a display, a printing device, and a mailer. In addition, when the determination part 63 is calculating the degree of deviation, the alerting | reporting part 64 may alert | report further the said degree of deviation. In addition, when the determination unit 63 determines that the determination unit 63 is within a predetermined reference range, the notification unit 64 may notify that fact.

  Next, an example of the processing flow of the batting determination method realized by the batting determination device 60 of the present embodiment will be described using the flowchart of FIG.

  First, the acquisition unit 61 applies an external force to the test object from the impact imparting object by hitting the test object to collide with the impact imparted object, and in the inspection to determine the presence or absence of a defect in the test object by measuring and analyzing the reflected wave. The hit data indicating the time change of the magnitude of the external force is acquired (S10). For example, when the test object is hit, the acquisition unit 61 acquires hit data in real time.

Next, the analysis unit 62 analyzes the hit data acquired in S10. For example, the analysis unit 62 analyzes the hit data and specifies at least one value of the duration t _c , which is the time during which the external force continues in one collision, and the magnitude F of the external force in one collision. (S11).

  Thereafter, the determination unit 63 determines whether or not the hit specified by the hit data acquired in S10 satisfies a predetermined criterion based on the analysis result by the analysis unit 62. For example, the determination unit 63 determines whether the value specified by the analysis unit 62 in S11 is within a predetermined reference range.

  When it is within the predetermined reference range (Yes in S12), the determination unit 63 determines that the hit satisfies the predetermined reference, and ends the process as it is. On the other hand, when it is not within the predetermined reference range (No in S12), the determination unit 63 determines that the hit does not satisfy the predetermined reference. In this case, the determination unit 63 specifies the value specified by the analysis unit 62 in S11 and a representative value of a predetermined reference range (for example, the lower limit value, the upper limit value, the median value, and the analysis unit 62 specified). The degree of deviation from the value closest to the value may be calculated.

  Thereafter, the notification unit 64 notifies that the hit does not satisfy a predetermined standard (S13). At this time, the notification unit 64 specifies the value specified by the analysis unit 62 in S11 and a representative value of a predetermined reference range (eg, lower limit value, upper limit value, median value, analysis unit 62). The degree of deviation from the value closest to the value may be further notified.

  As a result, the worker can immediately grasp whether or not the performed hit satisfies a predetermined standard. When the hit satisfies a predetermined standard, measurement data (reflected wave data) obtained by the hit can be adopted to determine the presence or absence of a defect in the test object.

  On the other hand, when the hit does not satisfy the predetermined reference, the measurement data obtained by the hit is not adopted, and the hit and data measurement at that position can be repeated until the hit satisfies the predetermined reference. For this reason, according to this embodiment, whether or not a defect exists in the test object is determined based on measurement data when an external force is applied to the test object by striking a predetermined reference range each time. Can be performed. As a result, variation in inspection results can be suppressed and the reliability of the inspection can be increased.

  Further, according to the present embodiment, when the hit does not satisfy the predetermined reference, the degree of deviation between the hit and the predetermined reference can be notified. The worker can use the information for adjustment of the next hit. As a result, a desired hit can be realized with a small number of redo attempts.

  Here, real-time processing has been described as an example, but batch processing may be used. For example, hitting is performed a plurality of times while changing the hitting position on the test object, and for each hit, the hitting data is acquired and the measurement data (reflected wave data) for determining the presence or absence of a defect is acquired. At this time, an arbitrary method is used to manage to which position each data is hit data. When data for a predetermined number of hits is obtained, it is determined whether or not the hits described above satisfy a predetermined standard. If there is data that does not meet the predetermined criteria, this is notified.

  Thereby, the worker can grasp what satisfies the predetermined standard and what does not satisfy it in the multiple hits. When the hit satisfies a predetermined standard, measurement data obtained by the hit can be adopted to determine the presence or absence of a defect in the test object. On the other hand, when the hit does not satisfy the predetermined reference, the measurement data obtained by the hit is not adopted, and the hit and data measurement at that position can be repeated until the hit satisfies the predetermined reference.

As described above, according to the present embodiment described above, determination can be performed based on measurement data obtained when an external force is applied to a test object by striking that satisfies a predetermined criterion. For example, the frequency of the vibration wave applied to the test object is determined by analyzing the hit data and determining whether or not the duration t _c, which is the duration of the external force in one collision, satisfies a predetermined criterion. Can alleviate the inconvenience that varies every time. As a result, variation in details (size, shape, etc.) of the detectable defect can be reduced. Further, by determining whether or not the magnitude F of the external force in one collision satisfies a predetermined standard, it is possible to reduce the inconvenience that the magnitude of the external force applied to the test object varies every time. As a result, it is possible to reduce the variation in the area in the test object for which the presence or absence of the defect is determined.

<Second Embodiment>
In this embodiment, an example of the apparatus which gives a test object a hit is shown. FIG. 5 is a diagram showing a striking device for hammering inspection 100 according to the present embodiment. FIG. 6 is a cross-sectional view showing an example of the structure of the urging portion 30 of the striking device 100 for hammering sound inspection. FIGS. 7A to 7C are diagrams showing a series of operations of the striking device for hammering inspection 100 according to the present embodiment. 8A to 8C are cross-sectional views showing a series of operations of the urging unit 30. FIG.

  5 and 7, the portions other than the urging portion 30 partially show the internal structure as a sectional view, and the urging portion 30 except for a part of the collision member 31, It is a front view showing no internal structure. Moreover, in each figure of FIG.6 and FIG.8, about the three-way valve 38 and the gas source 39, the block structure is shown.

  The striking device for sound inspection 100 according to the present embodiment collides with a test object (corresponding to the test object of the first embodiment, not shown) and strikes the striking member 10 and travels straight through the striking member 10. And a biasing unit that biases the striking member 10 in one direction (arrow A direction) in the straight direction (arrow A direction and arrow B direction), and causes the striking member 10 to collide with the inspection object. 30. Here, the arrow A direction and the arrow B direction shown in FIG. 5 are opposite to each other.

The striking member 10 is urged by the urging unit 30, is guided by the guide unit 20, moves in one direction (arrow A direction), and strikes the inspection object. The inspection object is not particularly limited, and examples thereof include an installation structure such as a bridge and a tunnel wall surface. The material of the inspection object is not particularly limited, but the inspection object is, for example, a concrete structure. In the following description, the direction (arrow A direction) in which the striking member 10 moves during striking may be referred to as the distal end side, and the opposite direction may be referred to as the proximal end side.
Details will be described below.

  As shown in FIG. 5, the striking member 10 is provided with, for example, a rod-shaped guided portion 11 guided in the straight direction by the guide portion 20, and a tip side of the guided portion 11, and strikes the inspection object. It has a striking chip 12 and a force sensor 13 for detecting the magnitude of an external force applied to the inspection object from the striking member 10 due to a collision between the striking member 10 and the inspection object. More specifically, the guided portion 11 includes, for example, a rod-shaped first portion 111 such as a columnar shape, and a second portion 112 provided on the base end side of the first portion 111. .

  The 1st part 111 is formed in the substantially constant outer diameter over the longitudinal direction of the said 1st part 111 except the formation location of the protrusion part 113 demonstrated below. On the outer peripheral surface of the intermediate portion in the longitudinal direction of the first portion 111, a protruding portion 113 that protrudes outward is provided. The protrusion 113 is formed in a flange shape, for example.

  The second portion 112 is formed with a smaller diameter than the first portion 111 and constitutes the base end portion of the guided portion 11. More specifically, for example, the second portion 112 has a rod-like shape having a section that gradually decreases in diameter toward the base end side. For example, the outer diameter of the tip of the second portion 112 is set to be equal to the outer diameter of the first portion 111. A section of a predetermined length adjacent to the first portion 111 in the second portion 112 is gradually reduced in diameter toward the base end side. A surface 112 a on the proximal end side of the second portion 112 is formed in a planar shape orthogonal to the longitudinal direction of the guided portion 11.

  The hitting tip 12 is formed in a tapered shape (a shape that decreases in diameter toward the tip), and hits the inspection object with the tip. More specifically, for example, the hitting tip 12 includes a columnar base end portion 121 and a tip end portion 122 that is formed in a truncated cone shape and provided on the front end side of the base end portion 121. ing. The tip surface 12 a of the hitting chip 12 is formed in a planar shape that is orthogonal to the longitudinal direction of the guided portion 11. For example, a male screw (not shown) is formed on the base end portion of the base end portion 121, and when the male screw is screwed into the force sensor 13, the striking tip 12 is moved to the front end side of the force sensor 13. It is fixed.

  The force sensor 13 detects the magnitude of an external force applied to the striking member 10 when the striking member 10 collides with the inspection target (corresponding to an external force applied from the striking member 10 to the inspection target). Although the method of the force sensor 13 is not particularly limited, for example, the force sensor 13 may be a strain sensor configured to include a piezoelectric element or the like. The force sensor 13 is provided between the striking tip 12 and the guided portion 11. The force sensor 13 includes a main body portion 131 and a terminal portion 132 formed at a proximal end portion of the main body portion 131.

  The main body 131 is formed in, for example, a cylindrical shape, and the surface on the tip side thereof is a pressure receiving surface 133 that receives pressure from the striking tip 12. The pressure receiving surface 133 is formed in a flat shape, and the base end surface 123 of the striking tip 12 is in surface contact with the pressure receiving surface 133.

  The guided portion 11, the force sensor 13, and the striking tip 12 constituting the striking member 10 are arranged coaxially with each other, and constitute an integral rod-shaped member.

  One end of a signal wiring 50 that transmits a detection signal from the force sensor 13 is electrically connected to the terminal portion 132 of the force sensor 13. The first portion 111 of the guided portion 11 includes a through hole 11 a for passing the signal wiring 50 from the distal end of the first portion 111 to the proximal end side, and a space around the through hole 11 a and the first portion 111. A lead-out hole 11b communicating with each other is formed.

  Further, in a cylindrical portion 21 described later of the guide portion 20, a lead-out hole 21 b that connects the internal space and the external space of the cylindrical portion 21 to each other is formed at a position corresponding to the lead-out hole 11 b. The signal wiring 50 is led out to the external space of the striking device for hammering test 100 through the through hole 11a, the lead hole 11b, and the lead hole 21b in this order.

  The guide portion 20 includes a cylindrical portion 21 such as a cylindrical shape that guides the guided portion 11 of the striking member 10 in the straight direction (arrow A direction and arrow B direction).

  The cylindrical portion 21 has a sliding guide portion 211 that slides and guides the first portion 111 of the guided portion 11 in the straight direction. Furthermore, the cylindrical part 21 is a movement restricting part that restricts the striking member 10 from moving in a direction opposite to the one direction (arrow B direction) from a predetermined standby position (position of the striking member 10 shown in FIG. 5). 21a. That is, the guide part 20 has the movement control part 21a.

  The movement restricting portion 21 a is a constricted portion formed on the inner surface of the tubular portion 21. That is, the hollow section of the cylindrical portion 21 is partially reduced in the movement restricting portion 21a. For example, the inner diameter of the movement restricting portion 21a is gradually reduced and then gradually increased from the distal end side toward the proximal end side. More specifically, for example, in the cross section along the axial center of the tubular portion 21, the inner surface of the movement restricting portion 21 a bulges in an arch shape toward the center of the tubular portion 21. That is, the movement restricting portion 21a has a constricted shape whose inner surface is formed in a convex curved shape toward the inside.

  The movement restricting portion 21a is formed to have a smaller diameter than the first portion 111 of the guided portion 11, and the first portion 111 cannot enter the movement restricting portion 21a. However, the inner diameter of the movement restricting portion 21a is set so that at least a part of the second portion 112 of the guided portion 11 can be inserted into the movement restricting portion 21a. Specifically, for example, the striking member 10 moves at a position where the distal end portion of the second portion 112 (the portion gradually reducing in diameter toward the proximal end side) contacts the inner surface of the movement restricting portion 21a. Being regulated. That is, this position is the standby position for the striking member 10.

  The urging unit 30 urges the striking member 10 that is movement-regulated by the movement-regulating unit 21a and located at the standby position. More specifically, the urging unit 30 includes a collision member 31 that urges the striking member 10 in one direction (arrow A direction) by colliding with the striking member 10.

  The collision member 31 has a rod-shaped first piston portion 311 such as a columnar shape. On the other hand, a portion of the cylindrical portion 21 closer to the base end side than the movement restricting portion 21a constitutes a piston cylinder portion 213 that slides and guides the first piston portion 311 in the rectilinear direction. The front end surface 311 a of the first piston portion 311 is formed in a planar shape orthogonal to the longitudinal direction of the guided portion 11.

  Further, the striking device for hammering test 100 has a second urging portion 40 that urges the striking member 10 after being urged by the urging portion 30 in the direction of arrow B to return to the standby position. . The second urging unit 40 is made of, for example, an elastic body that urges the striking member 10 in the arrow B direction. The urging unit 30 urges the striking member 10 in the direction of arrow A against the urging of the second urging unit 40. More specifically, the second urging portion 40 is constituted by, for example, a compression type coil spring, and is extrapolated to a portion of the first portion 111 of the guided portion 11 that is more distal than the protruding portion 113. Yes.

  The cylindrical portion 21 has a housing portion 212 that is disposed on the distal end side with respect to the sliding guide portion 211. The inner space of the accommodating portion 212 is formed to have a larger diameter than the inner space of the sliding guide portion 211. In the inner space of the accommodating portion 212, a portion located around the first portion 111 of the guided portion 11 is a accommodating chamber 212 a that accommodates the second biasing portion 40 and the protruding portion 113 of the guided portion 11. Is configured.

  The guide part 20 has a cap part 22 provided at the tip of the cylindrical part 21. The cap portion 22 is formed in a ring shape, and the first portion 111 of the guided portion 11 is inserted through the cap portion 22. The tip of the coil spring constituting the second urging portion 40 is pressed against the proximal end by the cap portion 22. The proximal end of the coil spring is in contact with the protruding portion 113 of the guided portion 11 and urges the protruding portion 113 toward the proximal end side. That is, the coil spring constituting the second urging portion 40 is accommodated in the accommodating chamber 212a in a state of being sandwiched between the protruding portion 113 and the cap portion 22 in a compressed state, and the guided portion 11 is located at the base end. Energized to the side. The cap portion 22 also functions as a guide that slides and guides the first portion 111 of the guided portion 11.

  The distal end portion of the guided portion 11, that is, the distal end portion of the first portion 111 protrudes further toward the distal end side than the distal end portion of the guiding portion 20, that is, the cap portion 22. Therefore, the force sensor 13 and the striking tip 12 also protrude from the distal end portion of the guide portion 20 toward the distal end side.

  In addition, the piston cylinder part 213, the movement restricting part 21a, the sliding guide part 211, and the accommodating part 212 of the cylindrical part 21 are arranged in this order from the proximal end side to the distal end side, and are arranged coaxially with each other. ing. The guided portion 11 of the striking member 10 and the collision member 31 are arranged coaxially with each other along the straight direction (arrow A direction and B direction).

  As shown in FIG. 6, the collision member 31 includes a holding portion 312 and a second piston portion 313 in addition to the first piston portion 311. The holding portion 312 is formed in a cylindrical shape having a larger diameter than the first piston portion 311. The second piston part 313 is formed in a cylindrical shape having a larger diameter than the holding part 312. The second piston portion 313, the holding portion 312 and the first piston portion 311 are arranged in this order from the base end side to the tip end side, are arranged coaxially with each other, and are integrally formed with each other.

  In addition to the collision member 31, the urging unit 30 pressurizes the collision member 31 using, for example, a guide part 32 that guides the collision member 31 in the straight direction (arrow A direction and arrow B direction), and compressed gas. And a pressurizing part 35 that urges the collision member 31 in the direction of arrow A.

  The guide portion 32 includes, for example, a cylindrical first member 321 such as a cylindrical shape, and a disk-shaped second member 322 provided at an end portion on the distal end side of the first member 321.

  The inner space of the first member 321 constitutes a guide region 32a that slides and guides the second piston portion 313 of the collision member 31 in the arrow A direction and the B direction.

By fixing the second member 322 with respect to the proximal end portion of the guide portion 20, the guide portion 20 and the guide portion 32 are fixed to each other in a state of being coaxial with each other.
The second member 322 is formed with an insertion hole 322a through which the first piston portion 311 is inserted and which slides and guides the first piston portion 311. That is, the first piston part 311 is slidably guided by the insertion hole 322a and the piston cylinder part 213.

  The pressurizing unit 35 includes, for example, a housing member 351, a lid member 352, and a valve member 353.

  For example, the outer peripheral shape of the housing member 351 is a columnar shape, and the proximal end portion of the guide portion 32 is fixed to the surface on the distal end side.

  Inside the housing member 351, a valve chamber 351a that accommodates the valve member 353 so as to be linearly movable (for example, linear movement in the directions of arrows A and B), a pressure accumulation chamber 351b that stores compressed gas, and a pressure accumulation chamber A discharge path 351c serving as a flow path when the compressed gas 351b is provided in the guide region 32a of the guide portion 32 and discharged is formed.

  The discharge path 351c communicates with the guide region 32a. The discharge path 351c is formed to have a smaller diameter than the second piston portion 313 of the collision member 31, and the surface of the front end side of the housing member 351 regulates the movement of the collision member 31 in the arrow B direction. ing. The compressed gas released to the guide region 32a via the discharge path 351c urges the base end side surface of the second piston portion 313 of the collision member 31 in the direction of arrow A, and the collision member 31 moves in the direction of arrow A. It is designed to move vigorously. For example, the discharge path 351c is disposed at the center of the housing member 351, and the compressed gas released through the discharge path 351c is the center of the base end side surface of the second piston portion 313 of the collision member 31. The part is urged in the direction of arrow A.

  The pressure accumulating chamber 351b is disposed, for example, around the discharge path 351c, and has an inner air cross section formed in a donut shape. The pressure accumulating chamber 351b and the discharge passage 351c are partitioned from each other by a cylindrical partition wall 351e such as a cylindrical shape. However, in a state where the valve member 353 is located on the base end side, the lower end portion of the discharge path 351c and the pressure accumulating chamber 351b communicate with each other.

  The valve chamber 351a is disposed on the proximal end side of the discharge path 351c. The valve chamber 351a is formed in a cylindrical shape such as a columnar inner cross section.

  The valve member 353 is an umbrella-shaped valve and is held in the valve chamber 351a so as to be linearly movable (for example, linearly moved in the directions of arrows A and B).

The lid member 352 is fixed to the base end surface of the housing member 351. An inlet 352a having a smaller diameter than the inner space of the valve chamber 351a is formed at the center of the lid member 352.
A portion of the lid member 352 around the introduction port 352a restricts the movement of the valve member 353 in the arrow B direction.

  The urging unit 30 further includes a gas introduction pipe 36 having one end connected to the introduction port 352a of the pressurizing unit 35, a gas source 39 connected to the other end of the gas introduction pipe 36, and both ends of the gas introduction pipe 36. And a three-way valve 38 provided at a portion therebetween.

  The gas source 39 stores compressed gas (high pressure gas) supplied to the pressurizing unit 35.

  The three-way valve 38 is in a state in which compressed gas is supplied from the gas source 39 to the inlet 352a of the pressurizing unit 35 via the gas inlet pipe 36, and the supply is shut off and the gas is discharged from the inlet 352a and the three-way valve 38. It can be switched to one of a state where the sides (arrow C direction side) communicate with each other.

  Further, the urging unit 30 urges the collision member 31 in the direction of arrow B in order to return the collision member 31 urged by the pressurizing unit 35 to the standby position (position shown in FIG. 6). A member 33 is provided. The urging member 33 is configured by, for example, a compression type coil spring, and is externally inserted into the holding portion 312 of the collision member 31. The urging member 33 is sandwiched in a compressed state between the distal-side surface of the second piston portion 313 of the collision member 31 and the proximal-side surface of the second member 322. It is energized in the B direction.

  Next, the operation will be described.

  In order to strike an inspection object (not shown), first, it is arranged in the vicinity of the hammering apparatus 100 for sound inspection so that the inspection object can be hit by the striking member 10. Preferably, the arrangement of the striking device for hammering test 100 is finely adjusted so that the moving direction (direction of arrow A) of the striking member 10 is orthogonal to the surface of the test object that is hit.

  Note that, in the initial state, the striking member 10 and the collision member 31 are located at standby positions (positions shown in FIGS. 5, 7 (a), 6, and 8 (a)), respectively.

  Next, as preparation for the striking operation, compressed air is stored in the pressure accumulating chamber 351b. For this purpose, the three-way valve 38 is switched so that the compressed gas is supplied from the gas source 39 to the pressurizing unit 35 via the gas introduction pipe 36 (FIG. 8A). Thus, the compressed gas is introduced from the gas source 39 into the pressure accumulation chamber 351b through the gas introduction pipe 36, the introduction port 352a, and the valve chamber 351a in this order.

  The compressed gas introduced into the valve chamber 351a flows into the pressure accumulating chamber 351b through a gap between the inner peripheral surface of the valve chamber 351a and the outer peripheral portion of the valve member 353. At this time, the valve member 353 comes into contact with the proximal end surface of the partition wall 351e, and the pressure accumulating chamber 351b and the discharge path 351c are mutually blocked by the valve member 353. Therefore, inflow of the compressed gas from the pressure accumulation chamber 351b to the discharge path 351c is restricted.

  Next, after the compressed gas is stored in the pressure accumulating chamber 351b, the three-way valve 38 is switched so that the inlet 352a and the discharge side (arrow C direction side) of the three-way valve 38 communicate with each other. Then, since the compressed gas in the valve chamber 351a is exhausted to the discharge side (arrow C direction side), the pressure in the valve chamber 351a decreases. For this reason, the valve member 353 is pushed by the compressed gas in the pressure accumulation chamber 351b and moves in the arrow B direction. As a result, the pressure accumulation chamber 351b and the discharge path 351c communicate with each other, so that the compressed gas in the pressure accumulation chamber 351b flows into the guide region 32a vigorously through the discharge path 351c.

  Thereby, the collision member 31 is urged | biased by compressed gas, and moves to the arrow A direction vigorously. At this time, the collision member 31 moves in the direction of arrow A against the urging by the urging member 33, but the urging force of the urging member 33 is sufficient as compared with the force that urges the collision member 31 with the compressed gas. Therefore, the collision member 31 moves with sufficient momentum (speed). As a result, the distal end surface 311a of the first piston portion 311 of the collision member 31 collides with the base end side surface 112a of the striking member 10 vigorously. Thereby, the striking member 10 is bounced by the collision member 31 and moves vigorously in the direction of the arrow A (FIGS. 8B and 7B).

  At this time, the striking member 10 moves in the direction of arrow A against the urging by the second urging unit 40, but the urging force of the second urging unit 40 is compared with the urging force by the collision of the collision member 31. Since it is weak enough, the striking member 10 moves with sufficient momentum (speed). As a result, the tip surface 12a of the striking tip 12 provided at the tip of the striking member 10 collides with the object to be inspected vigorously. That is, a hit is applied to the inspection object by the hitting member 10 (for example, the state shown in FIGS. 7C and 8C).

  Thereafter, the striking member 10 moves in the direction of arrow B in accordance with the urging by the second urging unit 40 and returns to its standby position. Further, after colliding with the striking member 10, the collision member 31 moves in the direction of arrow B according to the urging force of the urging member 33 and returns to its standby position (FIGS. 5, 7A, 6). FIG. 8 (a)).

  The direction of arrow A is not particularly limited. For example, it may be a horizontal direction, a direction inclined with respect to the horizontal direction, or vertically upward or vertically downward. The urging force of the second urging portion 40 and the urging member 33 is set so that the striking member 10 and the collision member 31 can return to their respective standby positions regardless of the direction of the arrow A.

  The force sensor 13 detects the magnitude of the external force applied to the hitting member 10 when the hitting member 10 collides with the test object (corresponding to the magnitude of the external force applied from the hitting member 10 to the test object). The detection result is input to a control circuit (not shown), and the control circuit determines whether or not the hit is within a normal range.

  More specifically, for example, based on the detection value by the force sensor 13, the length of time during which an external force is applied to the inspection target by striking and the maximum value of the external force applied to the inspection target by striking can be obtained. it can. Then, it is determined whether or not each of the length of time during which the external force is applied to the inspection target object by impact and the maximum value of the external force applied to the inspection object by impact is within an allowable range.

  When the length of time during which the external force is applied to the inspection object by the hit is within the allowable range, it can be seen that the frequency of the elastic wave input to the inspection target by the hit is within the allowable range. By inputting an elastic wave of an appropriate frequency (specifically, a sufficiently high frequency (sufficiently short wavelength)) to the inspection object, defects such as cracks existing in the inspection object were minute. However, since the elastic wave can be reflected at the defect, the defect can be easily detected. That is, for example, an elastic wave reflected from a crack or the like is radiated to the outside of the inspection object as a sound wave. By detecting the sound wave with a microphone installed outside the inspection object, the sound wave is analyzed. The presence of cracks and the like can be determined. When the frequency of the elastic wave input to the inspection object is too low (the wavelength is too long), the elastic wave passes through a minute defect, and thus the defect cannot be detected.

  In addition, when the maximum value of the external force applied to the inspection object by the hit is within the allowable range, it can be understood that the amplitude of the elastic wave input to the inspection target by the hit is within the allowable range. By inputting an elastic wave having an appropriate amplitude (specifically, a sufficiently large amplitude) to the inspection object, the elastic wave can reach the deep part of the inspection object. The presence or absence of defects can be determined.

  According to the embodiment as described above, the striking device for impact sound inspection 100 guides the striking member 10 that collides with an inspection object and strikes the striking member 10 in the straight direction (arrow A direction and B direction). And the urging unit 30 that urges the striking member 10 in one direction (arrow A direction) in the straight traveling direction and causes the striking member 10 to collide with the inspection object. The striking member 10 is urged by the urging unit 30, is guided by the guide unit 20, moves in one direction (arrow A direction), and strikes the inspection object.

  Thus, after the striking member 10 is urged by the urging portion 30, that is, after the state where the striking member 10 is urged by the urging portion 30 (the urging portion 30 does not urge the striking member 10). In the state), the striking member 10 goes straight and strikes. For this reason, a relatively large tolerance can be ensured with respect to a change in the distance between the striking device for hammering test 100 and the inspection object. That is, even when the distance between the hitting test impacting device 100 and the inspection object changes to some extent, it is possible to apply an impact with the same strength to the inspection object. Moreover, since the striking member 10 moves straight, the stroke of the striking operation can be easily lengthened.

  Further, since the urging unit 30 includes the collision member 31 that urges the striking member 10 in one direction (arrow A direction) by colliding with the striking member 10, the urging unit 30 is urged by the urging unit 30. The operation in which the striking member 10 goes straight after (after the end of the state of being urged by the urging unit 30) can be suitably realized.

  Moreover, since the striking member 10 has the rod-shaped guided portion 11 guided in the straight direction by the guide portion 20, the striking member 10 can be easily guided in the straight direction by the guide portion 20. Good straightness of the member 10 is obtained.

  Moreover, since the guide part 20 has the cylindrical part 21 which guides the to-be-guided part 11 in the rectilinear direction, the striking member 10 can be accurately guided in the rectilinear direction by the cylindrical part 21, and the striking member A good straightness of 10 is obtained.

More specifically, the striking member 10 has a rod-shaped guided portion 11 guided in the straight direction by the guide portion 20, and the guide portion 20 has a cylindrical portion 21 that guides the guided portion 11 in the straight direction. The guided portion 11 and the collision member 31 are arranged coaxially with each other along the straight direction. Then, the collision member 31 urges the striking member 10 in one direction (arrow A direction) by colliding with the base end portion (surface 112a) of the guided portion 11.
With such a configuration, better straightness of the striking member 10 can be obtained.

  Further, since the striking member 10 has a tapered striking tip 12 that is provided on the distal end side of the guided portion 11 and strikes the inspection object, the force applied per unit area of the inspection object by striking The product can be increased as much as possible. Therefore, since an elastic wave can be made to reach the deep part of the inspection object by striking, the state of the deep part of the inspection object can be determined.

  Moreover, since the striking member 10 has the force sensor 13 which detects the magnitude | size of the external force added to the said striking member 10 when the striking member 10 collides with a test object, the magnitude | size of the said force is directly measured. Therefore, the magnitude of the force can be detected with high accuracy.

  More specifically, since the force sensor 13 is provided between the striking tip 12 and the guided portion 11, the force sensor 13 is protected by the striking tip 12 and is equivalent to an external force applied to the striking tip 12. The external force can be applied to the force sensor 13. That is, the force transmitted to the force sensor 13 can be prevented from being attenuated by the separation of the force sensor 13 and the striking tip 12. Therefore, the magnitude of the external force applied to the striking member 10 can be properly detected.

  Moreover, the guide part 20 has the movement control part 21a which controls that the striking member 10 moves to the opposite direction (arrow B direction) with respect to one direction rather than a predetermined standby position, and the urging | biasing part 30 moves The striking member 10 which is restricted in movement by the restricting portion 21a and is located at the standby position is urged. For this reason, the force for urging the striking member 10 by the urging portion 30 can be made constant with good reproducibility. Therefore, when the striking device 100 is repeatedly struck, the constant striking is always performed. The test object can be hit with force.

  The guided portion 11 is provided with a rod-shaped first portion 111 and a proximal end side of the first portion 111 and constitutes a proximal end portion of the guided portion 11 and has a smaller diameter than the first portion 111. A second portion 112 formed. Moreover, the guide part 20 has the movement control part 21a formed so that the diameter could be smaller than the 1st part 111 and the 2nd part 112 could be inserted. And the movement control part 21a controls that the striking member 10 moves to the opposite direction (arrow B direction) with respect to one direction rather than a predetermined standby position. Therefore, the striking member 10 can be made to wait at a certain standby position with a simple structure.

Further, the striking device for hammering sound inspection 100 includes a second urging unit 40 that urges the striking member 10 after being urged by the urging unit 30 in the opposite direction (arrow B direction) to return to the standby position. Have.
Therefore, the striking member 10 after being urged by the urging portion 30 can be automatically returned to the standby position.

  Moreover, since the 2nd biasing part 40 consists of an elastic body which biases the striking member 10 in the opposite direction (arrow B direction), the 2nd biasing part 40 can be made into a simple structure.

  In addition, each component in said embodiment does not necessarily need to exist independently independently. A plurality of components may be formed as a single member, one component may be formed of a plurality of members, or a certain component may be a part of another component. A part of a certain component and a part of another component may overlap.

Hereinafter, examples of the reference form will be added.
1. The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave An acquisition unit for acquiring hitting data indicating a change in time,
An analysis unit for analyzing the hit data;
Based on the analysis result by the analysis unit, a determination unit that determines whether the hit satisfies a predetermined criterion,
When the determination unit determines that the predetermined standard is not satisfied, a notification unit that notifies the fact,
A striking judgment device.
2. In the batting determination device according to 1,
The analysis unit analyzes the hit data, and at least one value of a duration t _c , which is a time for which the external force continues in one collision, and a magnitude F of the external force in the single collision. Identify
The hit determination device, wherein the determination unit determines that the hit satisfies a predetermined reference when the value specified by the analysis unit is within a predetermined reference range.
3. In the hit determination device according to 2,
The said analysis part is a hit | damage determination apparatus which specifies the maximum value of the magnitude | size of the external force applied to the said test object by the said 1 collision as the magnitude | size F of the said external force.
4). In the batting determination device according to any one of 1 to 3,
The determination unit, when the analysis result does not meet the predetermined standard, calculates a degree of deviation between the analysis result and the predetermined standard,
The said alerting | reporting part is a hit | damage determination apparatus which alert | reports further the degree of the said divergence.
5. In the batting determination device according to any one of 1 to 4,
The test object is an impact determination device that is a building.
6). Computer
The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave An acquisition step of acquiring hitting data indicating a change in time,
An analysis step of analyzing the hit data;
Based on the analysis result in the analysis step, a determination step for determining whether the hit satisfies a predetermined criterion,
When it is determined that the predetermined standard is not satisfied in the determination step, a notification step for notifying that effect,
Perform hitting judgment method.
6-2. In the batting judgment method according to 6,
In the analysis step, the impact data is analyzed, and at least one value of a duration t _c that is a time during which the external force continues in one collision and a magnitude F of the external force in the single collision. Identify
In the determination step, the hit determination method that determines that the hit satisfies a predetermined reference when the value specified in the analysis step is within a predetermined reference range.
6-3. In the hit determination method according to 6-2,
In the analysis step, the impact determination method of specifying the maximum value of the magnitude of the external force applied to the test object in the single collision as the magnitude F of the external force.
6-4. In the hit judging method according to any one of 6 to 6-3,
In the determination step, when the analysis result does not satisfy the predetermined criterion, a degree of deviation between the analysis result and the predetermined criterion is calculated,
The hit determination method of further notifying the degree of divergence in the notification step.
6-5. In the hit judging method according to any one of 6 to 6-4,
The test object is a batting judgment method which is a building.
7). Computer
The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave Acquisition means for acquiring batting data indicating the time change of the length,
Analyzing means for analyzing the hit data;
A determination unit that determines whether the hit satisfies a predetermined criterion based on an analysis result by the analysis unit;
When the determination means determines that the predetermined standard is not satisfied, notification means for notifying that effect,
Program to function as.
7-2. In the program described in 7,
The analysis means analyzes the hit data, and at least one of a duration t _c , which is a time during which the external force continues in one collision, and a magnitude F of the external force in the single collision Identify
A program for causing the determination means to determine that the hit satisfies a predetermined reference when the value specified by the analysis means is within a predetermined reference range.
7-3. In the program described in 7-2,
A program for causing the analyzing means to specify the maximum value of the magnitude of the external force applied to the test object in the single collision as the magnitude F of the external force.
7-4. In the program according to any one of 7 to 7-3,
In the case where the analysis result does not satisfy the predetermined standard, the determination unit is configured to calculate a degree of deviation between the analysis result and the predetermined standard,
A program for causing the notification means to further notify the degree of the divergence.
7-5. In the program according to any one of 7 to 7-4,
The test object is a program that is a building.

1A CPU
2A RAM
3A ROM
4A Display control unit 5A Display 6A Operation receiving unit 7A Operation unit 8A Communication unit 9A Auxiliary storage device 10A Bus 10 Blowing member 11 Guided part 11a Through hole 11b Lead-out hole 111 First part 112 Second part 112a Surface 113 Projection part 12 Tip 121 Base end 122 Front end 123 Surface 13 Force sensor 131 Main body 132 Terminal part 133 Pressure receiving surface 20 Guide part 21 Tubular part 21a Movement restricting part 211 Sliding guide part 212 Accommodation part 212a Accommodation chamber 213 Piston cylinder part 22 Cap Part 30 Energizing part 31 Collision member 311 First piston part 311a Front end surface 312 Holding part 313 Second piston part 32 Guide part 321 First member 322 Second member 322a Insertion hole 33 Energizing member 35 Pressurizing part 351 Housing member 351a Valve chamber 351b Accumulation chamber 351c Release passage 351e Partition wall 3 2 Lid member 352a Inlet port 353 Valve member 36 Gas inlet tube 38 Three-way valve 39 Gas source 40 Second urging unit 50 Signal wiring 60 Hitting determination device 61 Acquisition unit 62 Analysis unit 63 Determination unit 64 Notification unit 100 Blow for sound test apparatus

Claims (7)

The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave An acquisition unit for acquiring hitting data indicating a change in time,
An analysis unit for analyzing the hit data;
Based on the analysis result by the analysis unit, a determination unit that determines whether the hit satisfies a predetermined criterion,
When the determination unit determines that the predetermined standard is not satisfied, a notification unit that notifies the fact,
A striking judgment device. In the hit judgment device according to claim 1,
The analysis unit analyzes the hit data, and at least one value of a duration t _c , which is a time for which the external force continues in one collision, and a magnitude F of the external force in the single collision. Identify
The hit determination device, wherein the determination unit determines that the hit satisfies a predetermined reference when the value specified by the analysis unit is within a predetermined reference range. In the hit judgment device according to claim 2,
The said analysis part is a hit | damage determination apparatus which specifies the maximum value of the magnitude | size of the external force applied to the said test object by the said 1 collision as the magnitude | size F of the said external force. In the hit | damage determination apparatus of any one of Claim 1 to 3,
The determination unit, when the analysis result does not meet the predetermined standard, calculates a degree of deviation between the analysis result and the predetermined standard,
The said alerting | reporting part is a hit | damage determination apparatus which alert | reports further the degree of the said divergence. In the hit judgment device according to any one of claims 1 to 4,
The test object is an impact determination device that is a building. Computer
The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave An acquisition step of acquiring hitting data indicating a change in time,
An analysis step of analyzing the hit data;
Based on the analysis result in the analysis step, a determination step for determining whether the hit satisfies a predetermined criterion,
When it is determined that the predetermined standard is not satisfied in the determination step, a notification step for notifying that effect,
Perform hitting judgment method. Computer
The magnitude of the external force in the inspection for determining the presence or absence of a defect in the test object by applying an external force to the test object from the hit application by hitting the test object with the test object and measuring and analyzing the reflected wave Acquisition means for acquiring batting data indicating the time change of the length,
Analyzing means for analyzing the hit data;
A determination unit that determines whether the hit satisfies a predetermined criterion based on an analysis result by the analysis unit;
When the determination means determines that the predetermined standard is not satisfied, notification means for notifying that effect,
Program to function as.

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