JP2016057104A - Virtual ultrasonic flaw detection testing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To virtually perform ultrasonic flaw detection testing with the same operation as the actual testing without using the same pipeline or the like as the actual machine.SOLUTION: A virtual ultrasonic flaw detection testing system comprises: a dummy testing body 1 which simulates an application object of ultrasonic flaw detection testing; a simulated probe 2 which is used as a probe for the ultrasonic flaw detection testing performed virtually with the dummy testing body 1 as an object; a position measuring device 3 which acquires positional information for specifying the position of the simulated probe 2 on the outside surface of the dummy testing body 1; a flaw detection waveform database 18 which stores data on a flaw detection waveform for each position coordinate on the outside surface of the dummy testing body 1; and a display part 4a of a display device 4 which displays the flaw detection waveform on the basis of the data on the flaw detection waveform which corresponds to the position of the simulated probe 2 on the outside surface of the dummy testing body 1 on the basis of the positional information acquired by the position measuring device 3 and is read from the flaw detection waveform database 18.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a virtual ultrasonic testing system. More specifically, the present invention is suitable for use in, for example, an ultrasonic flaw detection test that is suitable for use in, for example, education / training for skill improvement of ultrasonic flaw detection tests and evaluation / certification for skill confirmation. Regarding technology.

  For example, an ultrasonic flaw detection test has been conventionally performed as a nondestructive inspection in the vicinity of various plant pipes and their welds (Non-Patent Document 1).

Japanese Industrial Standard JIS 3060: 2002 "Ultrasonic flaw detection test method for steel welds"

  However, whether or not all the various defects such as cracks in the vicinity of pipes and their welds can be discovered (in other words, detected) without leaks by ultrasonic flaw detection tests (particularly manual flaw detection) is investigated. It depends heavily on the skill of the worker (inspector) who operates the child. Therefore, it is important to improve the flaw detection skill and confirm the skill of the worker (inspector) in order to carry out a highly accurate test. It is.

  However, defects that are artificially added to welded parts and pipes in the same pipes as actual machines in order to conduct education / training to improve flaw detection skills in ultrasonic flaw detection tests and to perform evaluation / verification for checking skills. If a defect is actually detected by performing an ultrasonic flaw test on the test body in the same manner as the actual test using the actually formed one as a test body, for example, the form, shape and position of the defect are different. It is necessary to prepare a large number of specimens, and a large amount of money and a great deal of labor are required to produce the specimens. For this reason, it is difficult to say that education / training and evaluation / certification using the same piping as the actual machine is inexpensive and simple, and is not highly versatile.

  Therefore, an object of the present invention is to provide a virtual ultrasonic flaw detection test system capable of virtually performing an ultrasonic flaw detection test by an operation similar to an actual test without using piping similar to that of an actual machine. .

  In order to achieve such an object, the virtual ultrasonic testing system of the present invention includes a dummy specimen that simulates an application target of the ultrasonic testing, and an ultrasonic inspection test that is virtually performed on the dummy specimen. A mock probe used as a probe, a position measuring device for acquiring position information for specifying the position of the mock probe on the outer surface of the dummy specimen, and a position on the outer surface of the dummy specimen The flaw detection data read from the database corresponding to the position on the outer surface of the dummy specimen of the dummy probe based on the position information acquired by the database and the flaw detection waveform data for each coordinate And a display unit for displaying a flaw detection waveform based on the waveform data.

  Therefore, according to this virtual ultrasonic flaw detection test system, an ultrasonic flaw detection test is virtually performed by a dummy test body that simulates an application object of the ultrasonic flaw detection test and a mock probe used as a probe for the ultrasonic flaw detection test. Therefore, it is not necessary to use a specimen that has the same piping as the actual machine, and the ultrasonic flaw detection test is virtually performed without requiring a large amount of money and a lot of labor to create the specimen. Done.

  According to the virtual ultrasonic testing system of the present invention, the simulated probe is provided with a contact detection sensor, and according to the identification signal of the contact detection sensor, when the simulated probe is not in contact with the dummy test specimen, The waveform may not be displayed. In this case, since the flaw detection waveform is not displayed as in the case of the actual flaw detection test when the mock probe is not operated properly, the system user can Educated and trained to operate the child properly.

  In the virtual ultrasonic flaw detection test system of the present invention, the simulated probe is provided with a pressure sensor, and according to the measurement value of the pressure sensor, the force with which the simulated probe is pressed against the dummy specimen is determined by a predetermined pressing force. The echo height may be reduced and the flaw detection waveform may be displayed on the display when it is weak. In this case, if the simulated probe is not operated properly, it is the same as the actual simulated flaw detection test. Since the echo height of the flaw detection waveform is weakened and displayed, the system user is educated and trained to properly operate the simulated probe.

  In the virtual ultrasonic testing system of the present invention, posture information for specifying the posture of the simulated probe on the outer surface of the dummy specimen is further acquired by the position measuring device and acquired by the position measuring device. When the orientation of the dummy probe on the outer surface of the dummy probe based on the posture information is deviated from the appropriate orientation, the echo height may be reduced and the flaw detection waveform may be displayed on the display unit. In this case, when the mock probe is not operated properly, the echo height of the flaw detection waveform is weakened and displayed in the same manner as in the actual mock flaw detection test. Educated and trained to operate properly.

  In the virtual ultrasonic flaw detection test system of the present invention, the position measurement device may be a spatial position sensor using a magnetism having a magnetic field generation source and a magnetic sensor. The measuring device is configured to be able to cope with various shapes of dummy test specimens and to ensure good accuracy of position information.

  In the virtual ultrasonic testing system of the present invention, the dummy specimen may be made of a synthetic resin, and in this case, since the shape of the specimen is easily processed, ultrasonic testing is possible. A test body is prepared flexibly corresponding to various modes and shapes to which the test is applied, and the test body is created at a very low cost.

  In the virtual ultrasonic testing system of the present invention, a flexible sheet with a lattice pattern defining a position coordinate on the outer surface of the dummy specimen is applied to the outer surface of the dummy specimen, Combination data of position coordinates on the outer surface of the dummy specimen obtained by causing the position measurement device to detect the simulated probe located at the intersection of the grid and the position information obtained by the position measurement device is used. Thus, an expression for converting the position information acquired by the position measuring device into a position on the outer surface of the dummy specimen may be determined in advance. In this case, the position information acquired by the position measuring device Is appropriately performed using a predetermined formula, and the work for determining the formula is easy but has good accuracy. It takes place.

  In the virtual ultrasonic testing system of the present invention, the position of the simulated probe on the outer surface of the dummy specimen may be recorded at a predetermined interval as a log. The position of the mock probe as the actual operation of the mock probe in a simple ultrasonic flaw detection test can be confirmed or verified by the user of the system after the test.

  According to the virtual ultrasonic flaw detection test system of the present invention, by using a dummy test body, without using a test body obtained by processing the same piping as an actual machine, that is, a large amount of money and a lot of labor are required for creating the test body. Therefore, it is possible to virtually perform the ultrasonic flaw detection test without the need for the inspection, so that it is possible to reduce the cost and labor required for education, training, evaluation and verification of the ultrasonic flaw detection test. And by carrying out many inexpensive and simple education / training and evaluation / certification, the skill and accuracy of the ultrasonic flaw detection test are improved, and the accuracy of defect detection by the ultrasonic flaw detection test is improved. As a result, it is possible to efficiently perform maintenance on the defective portion and to improve the reliability of guaranteeing that there is no defect.

  The virtual ultrasonic flaw detection test system of the present invention prevents the flaw detection waveform from being displayed on the display unit when the mock probe is not in contact with the dummy test specimen, or has a force for pressing the mock probe against the dummy test specimen. The echo height is reduced and the flaw detection waveform is displayed on the display when it is weaker than the predetermined pressing force, or the orientation of the dummy probe on the outer surface of the dummy specimen is shifted from the appropriate orientation. The echo height may be reduced and the flaw detection waveform may be displayed on the display while the system user is instructed and trained to operate the simulated probe properly. Therefore, it is possible to improve the skill of the ultrasonic flaw detection test.

  In the virtual ultrasonic testing system of the present invention, the position measuring device may be a spatial position sensor that uses magnetism. In this case, the position measuring device can correspond to various shapes of dummy specimens and is positioned. Since the position measuring device can be configured as one that can ensure good accuracy of information, the position measuring device can be configured by a mechanism suitable for the present system.

  In the virtual ultrasonic testing system of the present invention, the dummy specimen may be made of a synthetic resin, and in this case, specimens of various modes and shapes can be created very inexpensively. Therefore, it is possible to significantly reduce the cost of education / training, evaluation / verification of ultrasonic testing.

  The virtual ultrasonic flaw detection test system of the present invention uses a dummy sheet for position information acquired by a position measurement device using a flexible sheet with a lattice pattern defining position coordinates on the outer surface of a dummy specimen. An expression for converting to a position on the outer surface of the body may be determined in advance. In this case, the position of the simulated probe can be appropriately specified, and the expression for that is well determined. Therefore, it is possible to improve the reliability of the present system in which an ultrasonic flaw detection test is virtually performed using a dummy specimen and a simulated probe.

  The virtual ultrasonic testing system of the present invention may be configured such that the position of the simulated probe is recorded as a log, and in this case, the position of the simulated probe as the actual operation of the simulated probe. The system user can check and verify this, for example, by checking and verifying the actual operation of the mock probe, it is possible to investigate the cause of defect detection failure and evaluate the defect detection skill. As a result, it is possible to improve the skill of the ultrasonic flaw detection test.

It is a flowchart explaining the process sequence in an example of embodiment of the virtual ultrasonic testing system of this invention. It is a schematic block diagram which shows an example of embodiment of the virtual ultrasonic testing system of this invention. It is a schematic block diagram which shows the structure put together by the control apparatus in the virtual ultrasonic testing system of embodiment.

  Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.

  1 to 3 show an example of an embodiment of a virtual ultrasonic testing system of the present invention. This virtual ultrasonic flaw detection test system is a dummy test body 1 that simulates an application target of an ultrasonic flaw detection test, and a simulation that is used as a probe for an ultrasonic flaw detection test that is virtually performed on the dummy test specimen 1. A probe 2, a position measuring device 3 that acquires position information for specifying the position of the simulated probe 2 on the outer surface of the dummy specimen 1, and each position coordinate on the outer surface of the dummy specimen 1 The flaw detection waveform database 18 in which the flaw detection waveform data is recorded, and the flaw detection waveform corresponding to the position of the dummy probe 1 on the outer surface of the dummy probe 1 based on the position information acquired by the position measuring device 3 The display unit 4a of the display device 4 displays the flaw detection waveform based on the flaw detection waveform data read from the database 18.

  The dummy test body 1 is formed in a form / shape that simulates a part of the structure of an actual machine such as a pipe, and simulates an application target (actual machine) of the ultrasonic flaw detection test.

  Therefore, the dummy test body 1 is not limited to a specific shape, and is appropriately formed into various shapes suitable for, for example, education / training for skill improvement and evaluation / certification for skill confirmation. Is done. The dummy test body 1 is formed in a cylinder whose size is adjusted to the diameter (outer diameter) of the pipe when, for example, an ultrasonic flaw detection test is performed on the pipe and the vicinity of the welded portion.

  The material of the dummy test specimen 1 is not limited to a specific one as long as the original shape can be maintained when the simulated probe 2 is pressed. Even when simulating, it is not necessary to use the same metal as that of the actual machine. For example, a metal whose shape can be easily processed and is inexpensive is appropriately selected. Specifically, for example, a synthetic resin such as a vinyl chloride resin or an acrylic resin can be used as the material of the dummy test body 1.

  The dummy test body 1 is installed with its position and posture fixed to simulate a part of the structure of an actual machine.

  In the example shown in FIG. 2, the dummy test body 1 is formed in a mode / shape (specifically, a cylindrical shape) that simulates a part of the piping of an actual machine, and the position and posture of the dummy test body 1 are determined by the pair of holding frames 5A and 5B. Fixed and installed.

  The simulated probe 2 simulates a probe used when performing an ultrasonic flaw detection test. When the virtual ultrasonic flaw detection test system is used, it is grasped by a system user and operated as a probe. It is what is done.

  The simulated probe 2 detects the presence or absence of contact with a predetermined portion of the probe (that is, a portion corresponding to the ultrasonic emission and echo receiving surface of the probe used for the ultrasonic flaw detection test). For example, a pressure sensor or a contact detection sensor may be provided. In this case, a measurement value (for example, a pressure value) by the pressure sensor, a signal by the contact detection sensor (for example, a contact presence / absence identification signal), and the like are input to the control device 10 via the position measurement device 3.

  The position measuring device 3 acquires position information for specifying at least the position of the simulated probe 2 on the outer surface of the dummy specimen 1, and further includes a posture (in other words, a direction as a posture angle and It is preferable to acquire posture information for specifying (tilt).

  Here, in the following description, it is assumed that the posture is specified in addition to the position of the simulated probe 2, but in the present invention, specifying the posture of the simulated probe 2 is essential although it is a preferable configuration. In other words, the present invention can also be applied to a configuration that does not have a configuration related to the posture in the following description.

  In the example shown in FIGS. 2 and 3, the position measuring device 3 includes a position sensor 3 a, and the simulated probe 2 is detected and recognized by the position sensor 3 a, and the detected and recognized simulated probe 2 is detected. A signal related to the position and orientation in the three-dimensional space is output from the position sensor 3a to the position measuring device 3.

  Then, the position measuring device 3 identifies the position of the simulated probe 2 in the three-dimensional space based on the signal regarding the position and orientation of the simulated probe 2 in the three-dimensional space output from the position sensor 3a. The posture (direction and inclination as posture angle) is specified.

  The position of the simulated probe 2 in the three-dimensional space is, for example, coordinates (X coordinate value, Y coordinate value, Z coordinate value) in a three-dimensional orthogonal coordinate system defined by the orthogonal X axis, Y axis, and Z axis. Represented by In this case, a distance from an arbitrary origin (unit: mm, for example) may be used as a coordinate value.

  The posture of the simulated probe 2 in the three-dimensional space is, for example, the Euler angles (yaw angle, pitch angle, roll angle) in the three-dimensional orthogonal coordinate system as described above, that is, the rotation angle about the Z axis, the rotation about the Y axis And the rotation angle around the X axis.

  The position measuring device 3, the simulated probe 2, and the position sensor 3a in the examples shown in FIGS. 2 and 3 can mutually transmit and receive (that is, input and output) signals such as control commands and various data. Electrically connected.

  The position measurement device 3, the simulated probe 2, and the position sensor 3a may be electrically connected to each other so that signals can be transmitted and received through a signal transmission / reception mechanism using a cable. The wireless signal transceiver may be electrically connected so that signals can be transmitted and received via a wireless signal transmission / reception mechanism.

  Here, a mechanism for specifying the position and orientation of the simulated probe 2, in other words, a combination of the simulated probe 2, the position measuring device 3, and the position sensor 3a in the examples shown in FIGS. The mechanism to be used is not limited to a specific one as long as it can acquire position information for specifying at least the position of the simulated probe 2 on the outer surface of the dummy specimen 1. Alternatively, new techniques can be used.

  As a mechanism for specifying the position and orientation of the simulated probe 2, for example, a spatial position sensor using magnetism, a spatial position sensor using ultrasonic waves, or position measurement using image processing is used. However, as an example, FASTRAK manufactured by POLHEMUS, Inc. (which is an electromagnetic three-dimensional spatial position sensor capable of measuring six degrees of freedom) may be used. In this case, the simulated probe 2 becomes a magnetic force measuring unit that is a magnetic sensor as a receiver, the position sensor 3a becomes a magnetic field generation source that is a transmitter, and the position measuring device 3 becomes a control unit that controls them.

  The position measuring device 3 is electrically connected to the control device 10 so that signals such as control commands and various data can be transmitted and received (ie, input / output).

  The position measuring device 3 and the control device 10 may be electrically connected so that signals can be transmitted and received via a signal transmission / reception mechanism using a cable, or a radio signal transceiver connected to each of them. It may be electrically connected so that signals can be transmitted and received through a wireless signal transmission / reception mechanism.

  In the example shown in FIG. 3, the position measurement device 3 and the control device 10 can transmit and receive signals via the external device connection terminal 19 of the control device 10 and via a signal transmission / reception mechanism using a cable. Electrically connected.

  Information regarding the position and orientation (eg, Euler angles as posture angles) of the simulated probe 2 identified by the position measurement device 3 in the three-dimensional space is output to the control device 10 as a data signal.

  Then, the position of the simulated probe 2 on the outer surface of the dummy specimen 1 is used by the control device 10 using the information regarding the position and orientation of the simulated probe 2 in the three-dimensional space input from the position measuring device 3. And the posture of the simulated probe 2 are specified.

  The method of specifying the position of the simulated probe 2 on the outer surface of the dummy specimen 1 is not limited to a specific method, and for example, based on the contents and specifications of the position information acquired by the position measuring device 3. Is set as appropriate.

  Specifically, for example, the outer surface of the dummy specimen 1 is partitioned in a lattice shape by two orthogonal axes, and the two-dimensional orthogonal coordinate system (actually, curved along the outer surface of the dummy specimen 1). The position of the simulated probe 2 may be specified by coordinates (that is, a combination of coordinate values in each of the two axes) in the coordinate system on the surface that is bent or bent. In this case, a distance from an arbitrary origin (unit: mm, for example) may be used as a coordinate value.

  The control device 10 includes a CPU (Central Processing Unit) and, if necessary, a storage area and an input interface, and is configured by a personal computer, for example.

  In the example shown in FIG. 3, the control device 10 includes a control unit 11, a storage unit 12, an input unit 13, a display unit 14, and a memory 15, and is connected to each other by a signal line such as a bus.

  The control unit 11 performs control related to the control of the entire control device 10 and a virtual ultrasonic testing performed in accordance with a program 16 stored in the storage unit 12 with a specified processing procedure. Central processing unit).

  The storage unit 12 is a device that can store at least data and programs, and is, for example, a hard disk.

  The input unit 13 is an interface for giving at least a command of the user of the virtual ultrasonic testing system to the control unit 11, and is a keyboard, for example.

  The display unit 14 performs drawing / display of characters, graphics, and the like under the control of the control unit 11 and is, for example, a display.

  The memory 15 serves as a memory space that is a work area when the control unit 11 executes various controls and operations, and is, for example, a RAM (abbreviation of Random Access Memory).

  In the present embodiment, the shape data of the dummy specimen 1 is stored (saved) in the storage unit 12 as the specimen shape database 17 as, for example, three-dimensional model data in a virtual space.

  In the present embodiment, flaw detection waveform data used in an ultrasonic flaw detection test (hereinafter referred to as a virtual test) virtually performed on the dummy specimen 1 is stored (saved) in the storage unit 12 as a flaw detection waveform database 18. )

  The flaw detection waveform data is the flaw detection waveform assumed at each position of the simulated probe 2 on the outer surface of the dummy test specimen 1 when ultrasonic flaw detection is performed on the dummy test specimen 1 used in the virtual test. Prepared as a set of

  Note that the flaw detection waveform data is prepared under the condition that there is no defect in the dummy specimen 1 and the condition that there is a defect in the dummy specimen 1 as necessary.

  As the flaw detection waveform data under the condition that the dummy specimen 1 has no defects, data corresponding to the mode and shape of the dummy specimen 1 used in the virtual test is prepared. Therefore, when a dummy test body 1 having a plurality of modes / shapes is prepared and a virtual test is performed, flaw detection waveform data corresponding to each mode / shape is prepared.

  As the flaw detection waveform data on the condition that the dummy test body 1 has a defect, data corresponding to the type of defect in the form / shape of the dummy test body 1 used in the virtual test is prepared. Therefore, when a virtual test is performed by preparing a plurality of dummy specimens 1 having different forms and shapes, or assuming a plurality of types of defects, the flaw detection waveform corresponding to each pattern Data is prepared.

  For the flaw detection waveform data, for example, data collected by an actual ultrasonic flaw detection test may be used as it is, or data collected by an actual flaw detection test is processed. The data generated by numerical analysis or the like may be used. As the processing of the collected data, specifically, for example, the flaw detection waveform corresponding to a part of the flaw detection waveform data in which a defect is not flawed is detected (detected). For example, it may be replaced with a data portion, or noise having characteristics different from those of a flaw detection waveform when a defect is flawed may be artificially added.

The data of the flaw detection waveform, specifically, for example, position on the outer surface of the dummy specimen 1 is orthogonal to X _L-axis and the Y _L X _L axis coordinate value in the two-dimensional orthogonal coordinate system by axes x and Y _The position is expressed as the position coordinate (x, y) by the _L- axis coordinate value y, and the head is swung as the direction relative to the reference direction of the simulated probe 2 at the position coordinate (x, y) on the outer surface of the dummy specimen 1. Assuming that the angle is θ [°] and the flaw detection waveform value (echo height) at the position coordinates (x, y) is E, it is prepared as a set of (x, y, θ, E) for each θ at each position coordinate. Is done.

  The display device 4 is electrically connected to the control device 10 so that signals such as control commands and various data can be transmitted and received (ie, input / output).

  The control device 10 and the display device 4 may be electrically connected so that signals can be transmitted and received through a signal transmission / reception mechanism using a cable, or a wireless signal transceiver connected to each of them may be provided. You may make it electrically connect so that transmission / reception of a signal is possible through the mechanism of signal transmission / reception by radio | wireless used.

  The display device 4 simulates a flaw detector used when performing an ultrasonic flaw detection test, has a display unit 4a such as a display, and the display unit 4a has a defect in the form and shape of the dummy specimen 1. The flaw detection waveform corresponding to the type of the flaw detection waveform corresponding to the position and orientation of the simulated probe 2 on the outer surface of the dummy specimen 1 specified by the control device 10 is displayed.

  In the present embodiment, on the outer surface of the dummy specimen 1 using the information on the position and orientation of the simulated probe 2 in the three-dimensional space output from the position measuring device 3 and input to the control device 10. The process of specifying the position and orientation of the simulated probe 2 is, in other words, the process of converting the information from the position measuring device 3 into the position and orientation of the simulated probe 2 on the outer surface of the dummy specimen 1 is as follows. The conversion method is defined in the program 16 and performed by the program 16.

  The process of converting the information from the position measuring device 3 into the position and orientation on the outer surface of the dummy specimen 1 is a problem of coordinate conversion in the space and can be performed by a well-known method, so the details are omitted here. .

  In addition, about the conversion of the positional information acquired by the position measuring device 3 into the position coordinate on the outer surface of the dummy test body 1, the dummy test body 1, the mock probe 2, and the position measuring device 3 are previously set. It may be used to prepare a conversion formula.

  Specifically, for example, the simulated probe 2 is detected and recognized by the position measuring device 3 at a plurality of locations where the position coordinates are known on the outer surface of the dummy test body 1, and the plurality of locations are acquired by the position measuring device 3. The position information of the simulated probe 2 in the three-dimensional space is used, that is, the combination data of the position coordinates on the outer surface of the dummy specimen 1 and the position information acquired by the position measuring device 3 is used. A conversion formula of position information acquired by the position measuring device 3 to a position on the outer surface of the dummy specimen 1 may be determined.

  At this time, in order to define the position coordinates on the outer surface of the dummy specimen 1 (in other words, to be known), a flexible sheet on which a lattice pattern is drawn is attached to the outside of the dummy specimen 1. The simulated probe 2 is placed on the intersection of the lattice of the sheet so that it is detected and recognized by the position measuring device 3. Thus, the position coordinates and position on the outer surface of the dummy specimen 1 are obtained. Combination data with position information acquired by the measuring device 3 may be obtained.

  Further, regarding the specification of the position and orientation of the simulated probe 2 based on the information from the position measuring device 3 (in other words, conversion of the information from the position measuring device 3 into the position and orientation of the simulated probe 2), If necessary, calibration may be performed by an appropriate method.

  In addition, when the formula which converts the positional information acquired by the position measuring device 3 into the position on the outer surface of the dummy specimen 1 is determined in advance, the shape data of the dummy specimen 1 is specifically For example, it is not necessary to prepare the three-dimensional model data in the virtual space (therefore, the specimen shape database 17 does not need to be stored (saved) in the storage unit 12).

  Further, the initial position and initial posture of the simulated probe 2 are recognized in advance by the position measurement device 3 when using the virtual ultrasonic flaw detection test system, as necessary. For example, the simulated probe 2 that is arranged at a preset origin position or reference point position on the outer surface of the dummy specimen 1 and whose orientation is adjusted in a preset reference direction (0 ° direction) is used for position measurement. Information that is recognized by the device 3 and output from the position measuring device 3 at this time is used, and origin position setting / reference point position setting related to information output from the position measuring device 3 to the control device 10 ° Direction setting is performed.

  The procedure of a virtual ultrasonic flaw detection test using the virtual ultrasonic flaw detection test system of the present embodiment having the above configuration will be described below.

  Here, in the following description, a person who operates the control device 10 is referred to as an operator, and a person who performs the probe (flaw detection scanning) of the dummy specimen 1 using the simulated probe 2 is referred to as a flaw detector. Note that the operator and the flaw detector may be the same person.

  First, the control device 10 reads data on the shape of the specimen and the data on the flaw detection waveform corresponding to the dummy specimen 1 that is the subject of the virtual test (S1).

  In the present embodiment, the data of the test body shape recorded (recorded) in the test body shape database 17 stored (stored) in the storage unit 12 by the data reading unit 11a of the control unit 11 of the control device 10 is included. Then, in accordance with the operator's designation input via the input unit 13, data on the specimen shape corresponding to the dummy specimen 1 that is the subject of the virtual test is read.

  Further, an operator input via the input unit 13 from the flaw detection waveform data recorded (recorded) in the flaw detection waveform database 18 stored (saved) in the storage unit 12 by the data reading unit 11a. In accordance with the designation, flaw detection waveform data corresponding to the dummy specimen 1 that is the subject of the virtual test is read.

  The data reading unit 11 a stores the read specimen shape data and flaw detection waveform data in the memory 15.

  Subsequently, the flaw detector uses the mock probe 2 to perform a virtual probe (flaw detection scan) of the dummy test specimen 1 (in other words, a virtual ultrasonic test using the dummy test specimen 1 virtually) The following processing is performed in response to the operation of the simulated probe 2 to perform

  First, the simulated probe 2 operated for virtual probe of the dummy specimen 1 is detected and recognized by the position measuring device 3 (S2).

  In the present embodiment, the simulated probe 2 is detected and recognized by the position sensor 3 a included in the position measuring device 3, and signals related to the position and orientation of the simulated probe 2 are output to the position measuring device 3. The position measuring device 3 identifies the position and orientation of the simulated probe 2 in the three-dimensional space.

  Subsequently, position information and orientation information regarding the simulated probe 2 are input from the position measurement device 3 to the control device 10 via the external device connection terminal 19.

  Then, the position information receiving unit 11 b of the control unit 11 of the control device 10 stores the input position information and posture information in the memory 15.

  Next, the position and posture of the simulated probe 2 on the outer surface of the dummy specimen 1 are specified by the control device 10 using the information input from the position measuring device 3 (S3).

  In the present embodiment, the position specifying unit 11c of the control unit 11 of the control device 10 reads the specimen shape data of the dummy specimen 1 stored in the memory 15 in the process of S1, and the memory 15 in the process of S2. The position information and posture information relating to the simulated probe 2 stored in is read, and the information is converted into the position and posture on the outer surface of the dummy specimen 1.

  Then, the position specifying unit 11 c stores the converted position and orientation of the simulated probe 2 on the outer surface of the dummy specimen 1 in the memory 15.

  Next, it is determined whether or not the simulated probe 2 is in proper contact with the outer surface of the dummy specimen 1 (S4).

  Specifically, a predetermined portion of the simulated probe 2 specified based on the position and orientation of the simulated probe 2 specified in the process of S3 (that is, the probe used for the ultrasonic flaw detection test). Judgment is made based on whether or not the distance between the ultrasonic emission and echo reception surface) and the outer surface of the dummy specimen 1 is within a predetermined distance (for example, within 1 mm).

  In the present embodiment, the contact presence / absence determining unit 11d of the control unit 11 of the control device 10 reads the data of the test body shape of the dummy test body 1 stored in the memory 15 in the process of S1, and the memory in the process of S3. 15 is read, and it is determined whether or not the distance between the dummy specimen 1 and the simulated probe 2 is within a predetermined distance.

  When the simulated probe 2 includes a pressure sensor, a contact detection sensor, or the like for detecting the presence or absence of contact at a predetermined location of the simulated probe 2, the pressure sensor, the contact detection sensor, etc. The measurement value or the identification signal that is output from and input to the control device 10 may be further used. That is, the distance between the predetermined location of the simulated probe 2 specified based on the processing result of S3 and the outer surface of the dummy specimen 1 is within the predetermined distance, and is based on a pressure sensor, a contact detection sensor, or the like. When it is determined that the contact is made based on the measurement value or the identification signal, it may be determined that the simulated probe 2 is appropriately in contact with the outer surface of the dummy test body 1.

  When the contact presence / absence determination unit 11d determines that the simulated probe 2 is in proper contact with the outer surface of the dummy specimen 1 (S4: Yes), the processing procedure proceeds to the processing of S5. On the other hand, if it is determined that they are not in proper contact (S4: No), the processing procedure proceeds to the processing of S6.

  When it is determined that the simulated probe 2 is in proper contact with the outer surface of the dummy specimen 1 in the process of S4 (S4: Yes), the position of the simulated probe 2 is the range of the flaw detection waveform data. It is judged whether it is in (S5).

  Specifically, it is determined whether or not the position of the simulated probe 2 identified in the process of S3 is within the range of the flaw detection waveform data stored in the memory 15 in the process of S1.

  For example, when flaw detection waveform data is prepared as flaw detection waveform values (echo heights) at position coordinates (x, y) on the outer surface of the dummy test sample 1, the dummy test sample specified in the process of S3 Determination is made based on whether or not the position (x, y) of the simulated probe 2 on the outer surface of 1 exists as position coordinates (x, y) included in the flaw detection waveform data.

  In the present embodiment, the inside / outside determination unit 11e of the control unit 11 of the control device 10 reads the flaw detection waveform data stored in the memory 15 in the process of S1, and the simulation stored in the memory 15 in the process of S3. The position of the probe 2 is read, and it is determined whether or not the position of the simulated probe 2 exists as position coordinates included in the flaw detection waveform data.

  When the in / out range determination unit 11e determines that the position of the simulated probe 2 exists as the position coordinates included in the flaw detection waveform data (S5: Yes), the processing procedure is changed to the processing of S7. On the other hand, if it is determined that it does not exist (S5: No), the processing procedure proceeds to S6.

  Here, the posture of the simulated probe 2 specified in the process of S3 may be considered in the process of S4 or the process of S5.

  Specifically, the direction of the simulated probe 2 on the outer surface of the dummy specimen 1 derived based on the posture of the simulated probe 2 specified in the process of S3 (in other words, the swing angle) is a dummy. When the maximum deviation angle from the appropriate direction (in other words, the angle of the swing as the direction relative to the reference direction) in the position coordinates (x, y) on the outer surface of the test body 1 is exceeded, S4 In this process, it may be determined that the simulated probe 2 is not in proper contact with the outer surface of the dummy specimen 1. Note that the maximum value of the deviation angle from the appropriate direction is set to an appropriate value in advance.

  Alternatively, the swing angle θ [° as the orientation of the simulated probe 2 with respect to the reference direction calculated from the orientation of the simulated probe 2 derived based on the orientation of the simulated probe 2 identified in the process of S3 ] Does not exist as a combination of the position coordinates (x, y) included in the flaw detection waveform data stored in the memory 15 and the swing angle θ [°] of the simulated probe 2 in the process of S1. In the process of S5, it is determined that the position of the simulated probe 2 (and the combination of the swing angle) does not exist as the position coordinates (and the combination of the swing angle) included in the flaw detection waveform data. Anyway.

  When it is determined that the simulated probe 2 is not properly in contact with the outer surface of the dummy specimen 1 in the process of S4 (S4: No), or the position of the simulated probe 2 is flawed in the process of S5 When it is determined that there is no position coordinate included in the waveform data (S5: No), if the flaw detection waveform is displayed on the display device 4 at that time, the display is erased and nothing is displayed. It is made into the state which is not displayed (S6).

  In the present embodiment, a display erasure command signal is output to the display device 4 via the external device connection terminal 19 by the display control unit 11 f of the control unit 11 of the control device 10. Then, nothing is displayed on the display unit 4 a of the display device 4.

  On the other hand, when it is determined that the position of the simulated probe 2 exists as the position coordinates included in the flaw detection waveform data in the process of S5 (S5: Yes), it corresponds to the position and orientation of the simulated probe 2. The flaw detection waveform to be displayed is displayed by the display device 4 (S7).

  In the present embodiment, the display controller 11f reads the position and orientation of the simulated probe 2 stored in the memory 15 in the processing of S3, and the flaw detection waveform data corresponding to the position and orientation is read in the processing of S1. It is read from the flaw detection waveform data stored in the memory 15.

  Then, the read control unit 11 f outputs the read flaw detection waveform data to the display device 4 via the external device connection terminal 19. Then, a flaw detection waveform based on the flaw detection waveform data is displayed on the display unit 4a of the display device 4.

  As described above, the swing angle of the flaw detection waveform data as the direction with respect to the reference direction of the simulated probe 2 at the position coordinates (x, y) on the outer surface of the dummy specimen 1 is θ [°]. In addition, when the flaw detection waveform value (echo height) is prepared as E and a set of (x, y, θ, E) is prepared, the position of the simulated probe 2 is the position coordinate on the outer surface of the dummy specimen 1 If not coincident with (x, y), the flaw detection waveform data at the position coordinate (x, y) closest to the position of the simulated probe 2 may be used, or the simulated probe may be used. An average value of flaw detection waveform values at a plurality of position coordinates (x, y) close to the position 2 may be used.

  Further, when the simulated probe 2 is provided with a pressure sensor for detecting the presence or absence of contact at a predetermined location of the simulated probe 2, the simulated probe 2 is When the force pressed against the dummy specimen 1 is weaker than the predetermined pressing force, the echo height (in other words, the intensity of the reflected wave) is reduced at a constant rate or according to the degree of weakness with respect to the appropriate pressing force. In addition, the flaw detection waveform may be displayed. The predetermined pressing force in this case is appropriately set to an appropriate force as a force for pressing the probe against the test object when performing an ultrasonic flaw detection test.

  Further, the orientation (swing angle) of the simulated probe 2 derived based on the posture of the simulated probe 2 specified in the process of S3 is deviated from the appropriate orientation of the simulated probe 2 (in other words, When the swing angle as a direction with respect to the reference direction is greater than 0 °), the echo height (the intensity of the reflected wave) is at a constant rate or the degree of deviation from the appropriate direction (the magnitude of the swing angle) ), The flaw detection waveform may be displayed after being reduced.

  When the flaw detection waveform is displayed on the display device 4, the distance amplitude characteristic curve may be displayed simultaneously.

  Further, the contents of the virtual test by the virtual probe of the dummy specimen 1 performed using the mock probe 2 are logged (in other words, in accordance with the operator's instruction input via the input unit 13, for example). And a scanning trajectory). In this case, the items recorded as a log and the storage mode of the log are not limited to specific items and modes.

  Specifically, for example, at least the position of the simulated probe 2 is preferably the posture of the simulated probe 2, the measured value of the pressure sensor (for example, the pressure value) or the signal of the contact detection sensor (for example, the presence or absence of contact). (Identification signal) is stored in the storage unit 12 as a log file in text format.

  Also, the log recording interval is not limited to a specific time interval, and is appropriately set to an appropriate value. Specifically, the log recording interval may be set to, for example, an interval of 0.1 seconds. Note that the log recording interval and the processing interval of S2 (in other words, the response speed as a system) may be set differently. Specifically, the processing interval (system response speed) of S2 may be set within 40 milliseconds, for example.

  By recording the contents of the virtual test as a log (scanning trajectory), for example, the operator or flaw detector confirms or verifies the actual operation of the simulated probe 2 in the virtual test after the virtual test is completed. It becomes possible to do. By performing such confirmation / verification, for example, the cause of failure in detection (detection) of a defect based on the actual operation state of the simulated probe 2 or the actual operation state of the simulated probe 2 can be determined. Based on this, it becomes possible to evaluate the skill of defect detection.

  Then, the control unit 11 returns the processing procedure to the processing of S2. For example, when an instruction to end the virtual test is input via the input unit 13, the control unit 11 ends the process related to the execution of the virtual test.

  According to the virtual ultrasonic testing system of the present invention configured as described above, the dummy test body 1 for simulating the application target of the ultrasonic testing and the simulated probe used as the probe for the ultrasonic testing. By performing the ultrasonic flaw detection test virtually according to 2 above, it is not necessary to use a test body in which the same piping as the actual machine is processed, that is, a large amount of money and a lot of labor are required to create the test body. Therefore, it is possible to virtually perform the ultrasonic flaw detection test, and it is possible to reduce the cost and labor required for education / training and evaluation / verification of the ultrasonic flaw test.

  The virtual ultrasonic flaw detection test system of the present invention prevents the flaw detection waveform from being displayed on the display unit 4a of the display device 4 when the mock probe 2 is not in contact with the dummy test specimen 1, or the mock probe 2 When the force pressed against the dummy specimen 1 is weaker than a predetermined pressing force, the echo height is reduced so that the flaw detection waveform is displayed on the display unit 4a of the display device 4, or the dummy of the simulated probe 2 When the orientation on the outer surface of the test body 1 deviates from an appropriate orientation, the echo height may be reduced and the flaw detection waveform may be displayed on the display unit 4a of the display device 4. In these cases, Since the flaw detector is trained and trained to appropriately operate the simulated probe 2, it is possible to improve the skill of the ultrasonic flaw detection test.

  Although the above-described embodiment is an example of a preferred embodiment for carrying out the present invention, the embodiment of the present invention is not limited to the above-described embodiment, and the present invention is not deviated from the gist of the present invention. Various modifications can be made. For example, in the above-described embodiment, the shape data of the dummy test specimen 1 is stored (saved) in the storage unit 12 of the control device 10 as the test specimen shape database 17. The data of the shape 1 is stored in a storage device / storage medium such as a server that is electrically connected to the control device 10 so that signals such as control commands and various data can be transmitted and received (ie, input / output). It may be stored (saved).

  Further, in the above-described embodiment, the flaw detection waveform data is stored (saved) in the storage unit 12 as the flaw detection waveform database 18. However, the present invention is not limited to this, and the flaw detection waveform data may include control commands and various data. These signals may be stored (saved) in a storage device / storage medium such as a server electrically connected to the control device 10 so that signals can be transmitted / received (ie, input / output).

  In the above-described embodiment, the flaw detection waveform is displayed on the display unit 4 a of the display device 4 based on the command signal from the control device 10. However, the present invention is not limited to this, and the display unit 14 of the control device 10 displays the flaw detection waveform. The display device 4 may be omitted while being displayed.

DESCRIPTION OF SYMBOLS 1 Dummy test body 2 Simulated probe 3 Position measuring device 3a Position sensor 4 Display apparatus (simulated flaw detector)
4a Display unit 10 Control device

Claims (8)

  A dummy test body for simulating the application target of the ultrasonic flaw detection test, a mock probe used as a probe for an ultrasonic flaw detection test virtually performed on the dummy test target, and the dummy test body A position measuring device for acquiring position information for specifying the position of the simulated probe on the surface, a database in which flaw detection waveform data is recorded for each position coordinate on the outer surface of the dummy specimen, and A flaw detection waveform based on the flaw detection waveform data read from the database is displayed as corresponding to the position on the outer surface of the dummy specimen of the dummy probe based on the position information acquired by the position measurement device. And a virtual ultrasonic flaw detection test system.   The simulation probe is provided with a contact detection sensor, and according to the identification signal of the contact detection sensor, the flaw detection waveform is not displayed on the display unit when the simulation probe is not in contact with the dummy specimen. The virtual ultrasonic flaw detection test system according to claim 1.   The simulated probe is provided with a pressure sensor, and according to the measurement value of the pressure sensor, the echo height is reduced when the force with which the simulated probe is pressed against the dummy specimen is weaker than a predetermined pressing force. The virtual ultrasonic testing system according to claim 1, wherein the flaw detection waveform is displayed on the display unit.   The position measurement device further acquires posture information for specifying the posture of the simulated probe on the outer surface of the dummy specimen, and the simulated probe based on the posture information acquired by the position measurement device. The echo height is reduced and the flaw detection waveform is displayed on the display unit when the orientation of the child on the outer surface of the dummy specimen deviates from an appropriate orientation. Virtual ultrasonic testing system.   The virtual ultrasonic testing system according to claim 1, wherein the position measuring device is a spatial position sensor using a magnetism having a magnetic field generation source and a magnetic sensor.   The virtual ultrasonic testing system according to claim 1, wherein the dummy test body is made of a synthetic resin.   A flexible sheet with a lattice pattern defining the position coordinates on the outer surface of the dummy specimen is applied to the outer surface of the dummy specimen and the simulated probe placed at the intersection of the lattice of the sheet. A combination data of the position coordinates on the outer surface of the dummy specimen and the position information acquired by the position measurement device acquired by causing the position measurement device to detect a touch element is used, and the position The virtual ultrasonic testing system according to claim 1, wherein an expression for converting the position information acquired by a measuring device into the position on the outer surface of the dummy test body is determined in advance.   The virtual ultrasonic testing system according to claim 1, wherein the positions of the simulated probes on the outer surface of the dummy test specimen are recorded as a log at a predetermined interval.

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