CN111650282A - Ultrasonic C-scan detection method and device for triangular tube made of fiber wound composite material - Google Patents

Ultrasonic C-scan detection method and device for triangular tube made of fiber wound composite material Download PDF

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CN111650282A
CN111650282A CN202010496919.XA CN202010496919A CN111650282A CN 111650282 A CN111650282 A CN 111650282A CN 202010496919 A CN202010496919 A CN 202010496919A CN 111650282 A CN111650282 A CN 111650282A
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ultrasonic
metal cylinder
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CN111650282B (en
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高晓进
江柏红
周金帅
高增华
张昊
贺锁让
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Aerospace Research Institute of Materials and Processing Technology
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0609—Display arrangements, e.g. colour displays
    • G01N29/0645—Display representation or displayed parameters, e.g. A-, B- or C-Scan
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
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Abstract

The invention relates to an ultrasonic C-scan detection method and device for a triangular pipe made of filament wound composite materials, wherein the method comprises the following steps: arranging a metal cylinder in the triangular pipe to be detected, wherein the central axis of the metal cylinder is superposed with the central axis of the triangular pipe to be detected; the ultrasonic detection equipment sends an ultrasonic signal to the metal cylinder, and the propagation direction of the ultrasonic signal is vertical to the central axis of the metal cylinder; the ultrasonic detection device receives and identifies the ultrasonic signal reflected by the metal cylinder. The technical scheme provided by the invention can effectively detect the defects in the fiber-wound composite triangular tube and solve the problem that the fiber-wound composite triangular tube cannot be detected.

Description

Ultrasonic C-scan detection method and device for triangular tube made of fiber wound composite material
Technical Field
The invention relates to the field of ultrasonic nondestructive testing, in particular to an ultrasonic C-scan testing method and device for a fiber-wound composite triangular tube.
Background
The composite material product is widely applied to the industries of aerospace and the like, the composite material is used as a main bearing component, the use reliability and safety of the product are directly influenced by the internal quality of the composite material product, and the internal quality of the composite material product needs to be detected by adopting a nondestructive detection method. At present, the method of ultrasonic C-scan is usually adopted to detect the defects therein.
When the fiber-wound composite material triangular tube is detected by adopting an ultrasonic detection method, ultrasonic waves easily and directly penetrate through the tube wall, so that the intensity of reflected wave signals generated by the tube wall and reflected wave signals generated by internal defects is greatly attenuated, the signal intensity and the return time of the reflected wave signals are very close to each other, the reflected wave signals and the return time are difficult to distinguish, and the fiber-wound composite material triangular tube cannot be detected.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide an ultrasonic C-scan detection method and device for a filament wound composite triangular tube, which can effectively detect the internal defects of the filament wound composite triangular tube and solve the problem that the filament wound composite triangular tube cannot be detected.
The purpose of the invention is mainly realized by the following technical scheme:
in a first aspect, an embodiment of the present application provides an ultrasonic C-scan detection method for a filament wound composite triangular tube, including:
arranging a metal cylinder in the triangular pipe to be detected, wherein the central axis of the metal cylinder is superposed with the central axis of the triangular pipe to be detected;
the ultrasonic detection equipment sends an ultrasonic signal to the metal cylinder, and the propagation direction of the ultrasonic signal is perpendicular to the central axis of the metal cylinder;
the ultrasonic detection equipment receives and identifies the ultrasonic wave signals reflected by the metal cylinder.
Further, the outer surface roughness of the metal cylinder is not greater than 3.2 microns.
Further, the diameter of the metal cylinder is smaller than the diameter of an inscribed circle of the triangular section of the triangular pipe to be detected, and the value range of the difference between the two is [5mm,10mm ].
Further, the metal cylinder and the triangular pipe to be detected are immersed in water, and the ultrasonic detection equipment is used for carrying out water immersion ultrasonic detection on the triangular pipe to be detected.
Further, the probe of the ultrasonic detection device makes a circular motion around the triangular tube to be detected according to a preset angular velocity, and sends an ultrasonic signal to the triangular tube to be detected according to a preset sending frequency.
Further, the diameter of the circular track corresponding to the circular motion is larger than the diameter of the circumscribed circle of the triangular section of the triangular tube to be detected, and the value range of the difference between the two is [10mm,50mm ].
Further, setting a detection starting point and setting a rotation angle corresponding to the detection starting point to be 0 degree, and setting other rotation angles to be [1, 360] degrees;
and setting the corresponding relation between the rotation angle and the intensity of the ultrasonic signal sent by the probe of the ultrasonic detection equipment.
Further, setting standard ultrasonic signal intensity, and representing by using amplitude voltage of the standard ultrasonic signal intensity;
according to the rotation angles and the standard ultrasonic signal intensity, setting the ultrasonic signal intensity corresponding to each rotation angle through the following formula, and representing the ultrasonic signal intensity by using the amplitude voltage:
Figure BDA0002523238940000031
wherein θ is used in the tableCharacterizing the rotation angle in degrees; said Y is0The amplitude voltage is used for representing the standard ultrasonic signal intensity and the unit is V; said Y is1(θ) an amplitude voltage in V for representing the intensity of the ultrasonic signal corresponding to each of the rotation angles.
Further, according to the rotation angle, the position of the detection point in the triangular tube to be detected is determined through the following formula:
Figure BDA0002523238940000032
the L (theta) is used for representing the position of each detection point on the triangular tube to be detected in one circular motion period, and the unit is mm; r is used for representing the radius of the circumscribed circle of the triangular pipe to be detected, and the unit is mm; and theta is used for representing the rotation angle, the unit is DEG, and the detection point is the incident point of the ultrasonic signal in the triangular tube to be detected in the circular motion period.
Second aspect the present application provides an ultrasonic C-scan detection apparatus for a filament wound composite triangular tube, including: the device comprises a bracket, a metal cylinder and ultrasonic detection equipment;
the metal cylinder penetrates through the triangular pipe to be detected, and the central axis of the metal cylinder is superposed with the central axis of the triangular pipe to be detected;
two ends of the metal cylinder are placed on the bracket;
and the ultrasonic detection equipment performs ultrasonic detection around the triangular pipe to be detected.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
1. the invention provides an ultrasonic C-scan detection method and device for a fiber-wound composite triangular tube, which are characterized in that ultrasonic signals pass through the wall of the triangular tube and reach a metal cylinder penetrating into the triangular tube by utilizing the characteristic of thin wall of the triangular tube, the central axis of the metal cylinder is overlapped with the central axis of the triangular tube, the surface of the metal cylinder is smooth enough, the incident direction of the ultrasonic signals is vertical to the central axis of the metal cylinder, the ultrasonic signals are subjected to mirror reflection on the surface of the metal cylinder, and the reflection route is overlapped with the incident route. Therefore, after being reflected by the metal cylinder mirror surface, the ultrasonic signal can enter the pipe wall of the triangular pipe through the metal cylinder mirror surface again, so that the intensity of the ultrasonic signal can be greatly attenuated again.
The embodiment of the invention utilizes the metal cylinder arranged in the triangular tube to prolong the sound path of the ultrasonic signal, so as to delay the receiving time of the reflected wave signal generated by the internal defect, and simultaneously, the ultrasonic signal is attenuated twice, so that the difference between the ultrasonic amplitude and the receiving time of the defective area and the non-defective area is further amplified, and the detection sensitivity of the fiber winding composite material triangular tube is greatly improved.
2. The invention adopts a water immersion ultrasonic detection mode for detection, the probe is not contacted with the test piece, and the transmission and the receiving of ultrasonic waves are stable, thereby improving the detection precision; in addition, in water, the surface echo width is narrower than the emission pulse width, and the detection blind area can be reduced, so that the detection of a thin test piece is facilitated.
3. According to the principle of circular motion, the rotation angle of a probe of ultrasonic detection equipment is used for representing the incidence angle, and the amplitude voltage of the ultrasonic signal intensity is adjusted according to the incidence angle, so that the difference of reflected wave signals corresponding to each incidence angle is ensured to be within an error range, and the influence of the incidence angle on the reflected wave signals is eliminated.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a flow chart of an ultrasonic C-scan detection method of a filament wound composite triangular tube according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a test provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of another test provided in the embodiment of the present invention.
Reference numerals:
1-position 1; 2-position 2; 3-position 3.
At A-A; B-B; at C-C.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
The embodiment of the invention provides an ultrasonic C-scan detection method of a fiber-wound composite triangular pipe, which comprises the following steps:
step 101, arranging a metal cylinder in the triangular pipe to be detected.
In the embodiment of the invention, the central axis of the metal cylinder is coincident with the central axis of the triangular pipe to be detected. Because the internal structure of each surface of the triangular tube needs to be tested, the cylinder can ensure that the sound path is the same no matter which angle the triangular tube is tested from, so that the reflected wave signals generated by the internal defects of each test angle have the same receiving time, and subsequent data processing, such as error data removal, data grouping and the like, is facilitated. The performance of using metal to reflect ultrasonic waves is generally superior to other materials. It should be noted that the metal materials used in the embodiments of the present invention include: stainless steel, aluminum, and the like.
In the embodiment of the present invention, in order to secure the ultrasonic wave reflecting ability of the metal cylinder, it is required that the outer surface roughness thereof is not more than 3.2 μm. If the roughness of the outer surface of the metal cylinder is below 3.2 μm, the surface will be significantly attenuated by the total reflection. In view of the fact that in the embodiment of the present invention, the ultrasonic signal passes through the wall of the triangular tube twice, and the attenuation degree is great, it is necessary to reduce the attenuation at the reflection link of the metal cylinder, so as to be able to detect the reflected wave signal generated by the internal defect.
In the embodiment of the present invention, it is necessary to ensure that the sound path of the ultrasonic wave is sufficiently long to distinguish the receiving time of the reflected wave signal generated by the pipe wall and the receiving time of the reflected wave signal generated by the internal defect. Meanwhile, the ultrasonic attenuation caused by the overlong acoustic path is prevented, the ultrasonic is prevented from directly bypassing the metal cylinder, the diameter of the metal cylinder is smaller than that of an inscribed circle of the triangular section of the triangular tube to be detected, and the value range of the difference between the diameter of the metal cylinder and the diameter of the inscribed circle is [5mm,10mm ].
And 102, sending an ultrasonic signal to the metal cylinder by the ultrasonic detection equipment.
In the embodiment of the invention, the propagation direction of the ultrasonic signal is vertical to the central axis of the metal cylinder, so that the ultrasonic wave can return along the original path, and the ultrasonic wave passes through the detection area twice, thereby improving the detection precision.
In the embodiment of the invention, because the reflected wave signals generated by the internal defects are attenuated twice, the detection needs to be carried out by adopting a water immersion ultrasonic detection mode. The method has the following beneficial effects:
1. the probe is not contacted with the test piece, and the transmission and the reception of ultrasonic waves are stable, so that the detection precision is improved.
2. In water, the surface echo width is narrower than the emission pulse width, and the detection dead zone can be reduced, so that the detection of a thin test piece is facilitated, and the fiber-wound composite material triangular pipe in the embodiment of the invention belongs to a type with a thinner wall thickness, so that the water immersion method is very suitable for the embodiment of the invention.
In the embodiment of the invention, in order to comprehensively detect the triangular tube, the probe of the ultrasonic detection device needs to make circular motion around the triangular tube to be detected according to a certain angular velocity, and sends an ultrasonic signal to the triangular tube to be detected according to a preset sending frequency. For example, the transmission frequency probe transmits an ultrasonic signal to the triangular tube every 1 degree rotation.
In the process of circular motion of the probe around the triangular tube, due to different incident angles, the corresponding sound paths of the ultrasonic signals are different when the ultrasonic signals pass through the wall of the triangular tube. As shown in fig. 2, the acoustic path of the ultrasonic signal in the triangular tube wall is the wall thickness when incident from position 2, and the acoustic path of the ultrasonic signal in the triangular tube wall is obviously greater than that of the wall thickness when incident from position 3, which makes the reflected wave signals different for different incident angles. This means that when detecting the internal defect of the triangular tube, the reflected wave signal generated by the internal defect cannot be identified according to the single variable principle, because the reflected wave signal changes due to different incident angles and the internal defect, that is, the reflected wave signal changes due to different incident angles interfere with the detection result. Meanwhile, the accuracy of the ultrasonic C-scan image is also affected by the change of the reflected wave signal caused by different incident angles.
In order to solve the above problem, in the embodiment of the present application, according to the principle of circular motion, the rotation angle of the probe of the ultrasonic detection device is used to characterize the incident angle, and the amplitude voltage of the ultrasonic signal intensity is adjusted according to the incident angle, so as to ensure that the difference of the reflected wave signals corresponding to each incident angle is within the error range, thereby eliminating the influence of the incident angle on the reflected wave signals. The specific process is as follows:
as shown in fig. 2, the probe of the ultrasonic detection device is set as the initial position at position 1, and the rotation angle corresponding to the initial detection point is set as 0 degree, and the other rotation angles are set as [1, 360%]And (4) degree. Thus, during the circular motion, the angle θ of probe rotation can be used to characterize the corresponding incident angle. For example, when θ is 60 degrees, 180 degrees, and 300 degrees, the incident angle 90 degrees can be characterized. At this time, the sound path of the ultrasonic signal on the wall of the triangular tube is minimum. In the embodiment of the present invention, the ultrasonic signal intensity corresponding to the condition that θ is 60 degrees is taken as the standard ultrasonic signal intensity, and the amplitude voltage thereof is denoted as Y0. The ultrasonic signal intensities corresponding to other rotation angles are revised by referring to the standard ultrasonic signal intensity, and the amplitude voltage is recorded as Y1(theta). The specific formula is as follows:
Figure BDA0002523238940000081
wherein, theta is used for representing the rotation angle and the unit is degree; y is0The amplitude voltage is used for representing the standard ultrasonic signal intensity and the unit is V; y is1And (theta) is used for representing the amplitude voltage of the ultrasonic signal intensity corresponding to each rotation angle, and the unit is V.
And after the probe completes one period of circular motion, the probe moves along the length direction of the triangular pipe according to a preset step length, then the circular motion is performed for another period, and then the processes are repeated until the detection of the whole triangular pipe is completed. As shown in fig. 3, the probe returns to position a after completing one cycle of circular motion at position a. And (4) according to a preset step length, the probe is translated from the position A to the position B, then the next period is started from the position B, and then the process is repeated until the last circular motion is finished at the position C, and the detection is finished.
Therefore, in the scanning process of the probe along the scanning path, except that the probe angle is near 60 degrees, 180 degrees and 300 degrees, the probe only has the reflection signal of the metal rod at other angles, and compared with other water immersion ultrasonic, the influence of interfacial waves is reduced, and the reliability of detection is improved.
It should be noted that, when the standard ultrasonic signal intensity is set, the probe is rotated by 60 degrees clockwise from the scanning starting point, the direction of the acoustic beam is perpendicular to the triangular pipe wall, and the dB value of the ultrasonic instrument is adjusted to make the amplitude of the reflected wave of the metal rod on the screen of the ultrasonic instrument be 80%. During the test, 1 ultrasonic signal was acquired per angular interval, typically 1 degree apart.
In addition, because the triangular tube interface is triangular, in the process of circular motion of the probe, the distance between the probe and the triangular tube needs to be reasonably controlled, so that clear and effective signals can be received, and the probe is prevented from colliding with three edges of the triangular tube. In view of this, in the embodiment of the present invention, the diameter of the circular track corresponding to the circular motion is larger than the diameter of the circumscribed circle of the triangular cross-section of the triangular tube, and the difference between the two diameters is in the range of [10mm,50mm ].
And 103, receiving and identifying the ultrasonic wave signal reflected by the metal cylinder by the ultrasonic detection equipment.
In the embodiment of the invention, after receiving and identifying the ultrasonic signal reflected by the metal cylinder, the ultrasonic detection equipment converts the corresponding voltage amplitude of each rotation angle into an RGB (Red-Green-Blue) value. The specific calculation formula is as follows:
Figure BDA0002523238940000091
c (theta) is used for representing RGB values, V, corresponding to different anglesmaxThe voltage is used for representing the corresponding voltage when the amplitude of the ultrasonic signal is 100%, and the unit is V; y is1And (theta) is used for representing the amplitude voltage of the ultrasonic signal intensity corresponding to each rotation angle, and the unit is V.
In the embodiment of the invention, the defect is usually a region rather than a point, so that the ultrasonic detection device needs to draw a region during C-scan imaging, wherein the region can show the shape of the defect and the position of the defect in the triangular tube. In step 102, only the rotation angle of the probe can be known, but the specific position of the defect in the triangular tube is not known by the rotation angle, and the ultrasonic detection device cannot scan the image of the defect through the C scan, so in the embodiment of the present invention, when the defect of the triangular tube is analyzed, the specific position of the position of each detection point on the triangular tube to be detected is further analyzed within one circular motion period, and the specific position of the defect in the triangular tube is determined according to the position of each detection point, where the detection point is an incident point of the ultrasonic signal in the triangular tube to be detected within the circular motion period. Specifically, according to the radius of the circumscribed circle of the triangular tube and the rotation angle of the probe, the position of the detection point in the triangular tube to be detected is determined by the following formula:
Figure BDA0002523238940000101
wherein L (theta) is used for representing the triangular tube to be detected in one circle motion periodThe position of each detection point is in mm; r is used for representing the radius of a circumscribed circle of the triangular pipe to be detected, and the unit is mm; θ is used to characterize the angle of rotation in degrees. It should be noted that the value of L (θ) is merely used to indicate a specific position, and there is no actual physical significance, and for example, when θ is 0 °, L (θ) is 0 indicating that the detection point is position 1 in fig. 2, and when θ is 60 °,
Figure BDA0002523238940000111
the detection point is characterized as position 2 in fig. 2, where θ is (0 °, 60 °)
Figure BDA0002523238940000112
Position 3 in figure 2 is represented. And the other segment functions are analogized, wherein the endpoint values of the segment functions represent the detection points as the endpoints of the triangle or the midpoints of the edges of the triangle in FIG. 2.
The embodiment of the invention provides an ultrasonic C-scan detection device for a fiber-wound composite triangular pipe, which comprises: the device comprises a bracket, a metal cylinder and ultrasonic detection equipment;
the metal cylinder penetrates through the triangular pipe to be detected, and the central axis of the metal cylinder is superposed with the central axis of the triangular pipe to be detected. The two ends of the metal cylinder are placed on the support, and the ultrasonic detection equipment carries out ultrasonic detection around the triangular pipe to be detected.
In order to better illustrate the technical effects of the present invention, in the embodiment of the present invention, the carbon fiber resin matrix composite triangular tube prepared by the winding process with the thickness of 1mm and the side length of the cross section of 60mm (preset with the layering defects of Φ 4mm, Φ 6mm, and Φ 9mm at the middle thickness, respectively corresponding to the defect numbers 1, 2, and 3) is subjected to the ultrasonic C-scan detection according to the method described in the above embodiment, and the results are shown in table 1:
TABLE 1
Figure BDA0002523238940000113
The actual value is the area of the preset defect in square millimeter, and the measured value is the area of the defect measured by the ultrasonic C-scan detection device in square millimeter. The data in the table show that the error of the defect area displayed in the ultrasonic C-scan is within 5 percent compared with the actual value of the defect area, and is far lower than the error standard commonly used in the technical field.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims (10)

1. An ultrasonic C-scan detection method for a filament wound composite triangular tube is characterized by comprising the following steps:
arranging a metal cylinder in the triangular pipe to be detected, wherein the central axis of the metal cylinder is superposed with the central axis of the triangular pipe to be detected;
the ultrasonic detection equipment sends an ultrasonic signal to the metal cylinder, and the propagation direction of the ultrasonic signal is perpendicular to the central axis of the metal cylinder;
the ultrasonic detection equipment receives and identifies the ultrasonic wave signals reflected by the metal cylinder.
2. The method of claim 1,
the outer surface roughness of the metal cylinder is not greater than 3.2 microns.
3. The method of claim 1,
the diameter of the metal cylinder is smaller than that of an inscribed circle of the triangular section of the triangular pipe to be detected, and the value range of the difference between the two is [5mm,10mm ].
4. The method of claim 1,
the metal cylinder with wait to detect the triangle-shaped pipe and all submerge in aqueous, ultrasonic testing equipment is to wait to detect the triangle-shaped pipe carries out water logging ultrasonic testing.
5. The method of claims 1 to 4, wherein the ultrasonic detection device sends an ultrasonic signal to the metal cylinder, comprising:
and the probe of the ultrasonic detection equipment makes circular motion around the triangular pipe to be detected according to a preset angular velocity, and sends an ultrasonic signal to the triangular pipe to be detected according to a preset sending frequency.
6. The method of claim 5,
the diameter of the circular track corresponding to the circular motion is larger than the diameter of a circumscribed circle of the triangular section of the triangular pipe to be detected, and the value range of the difference between the two diameters is [10mm,50mm ].
7. The method of claim 5, wherein prior to the ultrasonic detection device sending an ultrasonic signal to the metal cylinder, the method further comprises:
setting a detection starting point and setting a rotation angle corresponding to the detection starting point to be 0 degree and other rotation angles to be [1, 360] degrees;
and setting the corresponding relation between the rotation angle and the intensity of the ultrasonic signal sent by the probe of the ultrasonic detection equipment.
8. The method according to claim 7, wherein the setting of the correspondence relationship between the rotation angle and the intensity of the ultrasonic signal transmitted by the probe of the ultrasonic detection device comprises:
setting standard ultrasonic signal intensity, and representing by using amplitude voltage of the standard ultrasonic signal intensity;
according to the rotation angles and the standard ultrasonic signal intensity, setting the ultrasonic signal intensity corresponding to each rotation angle through the following formula, and representing the ultrasonic signal intensity by using the amplitude voltage:
Figure FDA0002523238930000021
wherein θ is used to characterize the rotation angle in degrees; said Y is0The amplitude voltage is used for representing the standard ultrasonic signal intensity and the unit is V; said Y is1(θ) an amplitude voltage in V for representing the intensity of the ultrasonic signal corresponding to each of the rotation angles.
9. The method of claim 8, further comprising:
according to the rotation angle, determining the position of a detection point in the triangular pipe to be detected through the following formula:
Figure FDA0002523238930000031
the L (theta) is used for representing the position of each detection point on the triangular tube to be detected in one circular motion period, and the unit is mm; r is used for representing the radius of the circumscribed circle of the triangular pipe to be detected, and the unit is mm; and theta is used for representing the rotation angle, the unit is DEG, and the detection point is the incident point of the ultrasonic signal in the triangular tube to be detected in the circular motion period.
10. The utility model provides a detection device is swept to supersound C of filament winding combined material triangle-shaped pipe which characterized in that includes: the device comprises a bracket, a metal cylinder and ultrasonic detection equipment;
the metal cylinder penetrates through the triangular pipe to be detected, and the central axis of the metal cylinder is superposed with the central axis of the triangular pipe to be detected;
two ends of the metal cylinder are placed on the bracket;
and the ultrasonic detection equipment performs ultrasonic detection around the triangular pipe to be detected.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114594165A (en) * 2022-05-07 2022-06-07 鹰视(廊坊)科技有限公司 Thin-wall pipe defect detection device and application method thereof
CN115452943A (en) * 2022-08-30 2022-12-09 西北工业大学 Ultrasonic detection method for small-diameter thin-wall ceramic matrix composite pipe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089227A (en) * 1976-03-29 1978-05-16 Commissariat A L'energie Atomique Apparatus for measuring the radial dimensions of a cylindrical tube by ultrasonics
US20080289424A1 (en) * 2007-05-25 2008-11-27 Magnetic Analysis Corporation Oblique flaw detection using ultrasonic transducers
US20100005846A1 (en) * 2005-08-26 2010-01-14 Masaki Yamano Ultrasonic testing method and manufacturing method of seamless pipe or tube
CN104297349A (en) * 2014-10-17 2015-01-21 西安航空动力股份有限公司 Angle adjustment calibration test block and angle adjustment method of ultrasonic wave water logging transverse wave detection line focusing probe
CN108169326A (en) * 2017-12-08 2018-06-15 内蒙古北方重工业集团有限公司 Thick-wall tube inner surface cracks buried depth supersonic detection method
CN109374741A (en) * 2018-09-30 2019-02-22 北京工业大学 Hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089227A (en) * 1976-03-29 1978-05-16 Commissariat A L'energie Atomique Apparatus for measuring the radial dimensions of a cylindrical tube by ultrasonics
US20100005846A1 (en) * 2005-08-26 2010-01-14 Masaki Yamano Ultrasonic testing method and manufacturing method of seamless pipe or tube
US20080289424A1 (en) * 2007-05-25 2008-11-27 Magnetic Analysis Corporation Oblique flaw detection using ultrasonic transducers
CN104297349A (en) * 2014-10-17 2015-01-21 西安航空动力股份有限公司 Angle adjustment calibration test block and angle adjustment method of ultrasonic wave water logging transverse wave detection line focusing probe
CN108169326A (en) * 2017-12-08 2018-06-15 内蒙古北方重工业集团有限公司 Thick-wall tube inner surface cracks buried depth supersonic detection method
CN109374741A (en) * 2018-09-30 2019-02-22 北京工业大学 Hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
高晓进等: "小截面方管结构CFRP复合材料的超声检测方法" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114594165A (en) * 2022-05-07 2022-06-07 鹰视(廊坊)科技有限公司 Thin-wall pipe defect detection device and application method thereof
CN115452943A (en) * 2022-08-30 2022-12-09 西北工业大学 Ultrasonic detection method for small-diameter thin-wall ceramic matrix composite pipe
CN115452943B (en) * 2022-08-30 2024-04-30 西北工业大学 Ultrasonic detection method for small-diameter thin-wall ceramic matrix composite tube

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