Test block for measuring PE horizontal coverage range during TOFD and PE combined detection
By designing horizontal and vertical artificial reflectors on the test blocks detected by TOFD and PE, the problems of horizontal coverage range of PE probes and defect quantification in the TOFD blind spots are solved, and higher defect detection rate and quantitative accuracy are achieved, ensuring the quality of the project.
Patent Information
- Application Number
- CN202421118282.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-05-22
AI Technical Summary
In the combined detection of TOFD and PE, it is difficult for the prior art to accurately determine the horizontal coverage range of PE probes and the quantification of defects in the TOFD blind spot, resulting in low defect detection rate and quantitative accuracy.
A test block for TOFD and PE combined detection is designed, including a horizontal artificial reflector provided on the first detection surface, through which the horizontal coverage range of the PE probe sound beam is measured, and the distance-amplitude curve of the PE probe in the TOFD blind spot is obtained through the vertical artificial reflector, so as to achieve accurate quantification of defects.
Through the design of this test block, the horizontal coverage range of the PE probe and the defects in the TOFD blind spot can be accurately measured, which improves the defect detection rate and quantitative accuracy, and ensures the quality of the project.
Smart Images
Figure CN222812802U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of weld detection, in particular to a test block used for measuring the horizontal coverage range of PE during TOFD and PE combined detection. Background Art
[0002] At present, both structural welds and pipeline welds in the marine engineering field and special equipment industry can be inspected by combining TOFD (time-of-flight ultrasonic testing technology) and PE (pulse emission method), that is, connecting an ordinary shear wave oblique probe to the TOFD instrument, and the probe uses the pulse reflection method to scan the upper and lower surfaces along a non-parallel scanning path. The TOFD instrument records the whole process signal and obtains a D-scan image, which is more effective for defect detection in the TOFD detection blind area. However, this detection method is to install the PE probe on the TOFD scanner, and it cannot perform a zigzag scan of the weld vertically like manual ultrasonic testing. This results in the PE probe only being able to detect the TOFD scanning surface blind area where its main sound beam propagation path passes. The area where the main sound beam of the PE probe can cover the TOFD scanning surface blind area cannot be determined, resulting in the inability to determine how many sets of PE probes are needed to ensure full coverage of the detection area by the PE probe sound beam when formulating the detection process.
[0003] Therefore, it is urgent to design a test block for measuring the horizontal coverage of PE during TOFD and PE combined testing to solve the above-mentioned problems of accurately measuring the horizontal coverage of the PE probe and quantifying defects in the TOFD blind area. Utility Model Content
[0004] In order to solve the technical problems mentioned in the background technology of accurately measuring the horizontal coverage of the PE probe and quantifying defects in the TOFD blind area, a test block for measuring the horizontal coverage of PE during TOFD and PE combined detection is provided to solve the above problems.
[0005] To achieve the above-mentioned purpose, the specific technical scheme of a test block for measuring the PE horizontal coverage range during TOFD and PE combined detection in the utility model is as follows:
[0006] A test block for measuring the horizontal coverage of PE during TOFD and PE combined testing comprises a first testing surface, on which a horizontal artificial reflector is arranged, and a plurality of horizontal artificial reflectors are arranged to form an effective coverage measurement area of a PE probe sound beam in the horizontal direction, and the horizontal coverage of the PE probe sound beam is measured by the PE probe sound beam echo on the horizontal artificial reflector.
[0007] Furthermore, a center line is provided on the first detection surface, and horizontal artificial reflectors are arranged in pairs, each pair of horizontal artificial reflectors is symmetrically arranged with the center line as a symmetry axis, and multiple pairs of horizontal artificial reflectors are distributed in parallel in asymmetric manner.
[0008] Furthermore, a horizontal artificial reflector is formed on the first detection surface by providing a groove with a semicircular cross section.
[0009] Furthermore, a PE probe angle marking line is provided on the first detection surface to locate the position of the PE probe during testing.
[0010] Furthermore, the PE probe angle marking lines are arranged in groups, each group of PE probe angle marking lines is located on both sides of the center line, each group of PE probe angle marking lines matches each other, and each PE probe angle marking line is parallel to the center line.
[0011] Furthermore, it also includes a second detection surface and a third detection surface, which are symmetrically arranged on opposite sides of the first detection surface, and the second detection surface and the third detection surface form a TOFD scanning surface blind area height measurement area for measuring the TOFD scanning surface blind area height.
[0012] Furthermore, a first circular hole and a third circular hole are opened on the second detection surface, and a second circular hole and a fourth circular hole are opened on the third detection surface. The center of the first circular hole, the center of the second circular hole, the center of the third circular hole and the center of the fourth circular hole are located on the same plane to form a center plane, and the center plane is perpendicular to the first detection surface.
[0013] Further, the projection of the second circular hole on the second detection surface is tangent to the first circular hole and the third circular hole respectively, and the projection of the third circular hole on the third detection surface is tangent to the second circular hole and the fourth circular hole respectively.
[0014] Furthermore, the first circular hole, the second circular hole, the third circular hole and the fourth circular hole have the same aperture, the first circular hole and the third circular hole have different depths, and the second circular hole and the fourth circular hole have different depths.
[0015] Furthermore, it also includes a fourth detection surface, which is arranged in reverse symmetry with the first detection surface;
[0016] The second detection surface is provided with a fifth circular hole and a seventh circular hole, which are arranged symmetrically in the opposite direction to the second circular hole and the fourth circular hole. The third detection surface is provided with a sixth circular hole and an eighth circular hole, which are arranged symmetrically in the opposite direction to the first circular hole and the third circular hole, so as to form a TOFD scanning surface blind spot height measurement area adapted to the fourth detection surface.
[0017] The test block of the utility model for measuring the PE horizontal coverage range during TOFD and PE combined detection has the following advantages:
[0018] The utility model determines the size of the coverage area in the TOFD blind area by designing a horizontal artificial reflector on the test block to measure the sound beam boundary of the main sound beam of the PE probe, and at the same time obtains the distance-amplitude curve of the PE probe in the TOFD blind area through the vertical artificial reflector, accurately quantifies the defects detected in the TOFD blind area, improves the defect detection rate and quantitative accuracy, ensures the quality of engineering projects, and can be widely promoted and used in projects.
[0019] The utility model has a simple structure and is easy to operate. It effectively solves the problem that the horizontal coverage of the TOFD blind area by the main sound beam of the PE probe cannot be measured in the existing test block types. It can guide the number of PE probes required when formulating the TOFD and PE combined detection process to ensure full coverage of the TOFD blind area by the PE probe sound beam, avoid defect omission due to incomplete coverage of the detection area by the PE probe sound beam, and thus ensure the quality of the product weld. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the test block structure for measuring the PE horizontal coverage range during TOFD and PE combined detection according to the utility model;
[0021] Figure 2 It is a top view of a test block used for measuring the horizontal coverage of PE during TOFD and PE combined testing of the utility model;
[0022] Figure 3 It is a left view of the test block used for measuring the PE horizontal coverage range during TOFD and PE combined detection of the utility model;
[0023] Figure 4 It is a cross-sectional view of a test block used for measuring the PE horizontal coverage range during TOFD and PE combined testing of the utility model;
[0024] Figure 5 It is a bottom view of a test block for measuring the horizontal coverage of PE during TOFD and PE combined testing according to the present invention.
[0025] Explanation of marks in the figure: 1. First detection surface; 101. Horizontal artificial reflector; 102. Center line; 103. PE probe angle identification line; 2. Second detection surface; 100. First circular hole; 200. Second circular hole; 300. Third circular hole; 400. Fourth circular hole; 500. Fifth circular hole; 600. Sixth circular hole; 700. Seventh circular hole; 800. Eighth circular hole; 3. Third detection surface; 4. Fourth detection surface. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0027] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.
[0028] Please refer to the attached Figure 1 To Attachment Figure 5 The utility model describes a test block for measuring the PE level coverage range during TOFD and PE combined detection.
[0029] The existing method of installing the PE probe on the TOFD scanner will result in the PE probe being able to detect only the blind area of the TOFD scanning surface through which its main sound beam propagation path passes, and it is impossible to accurately measure the coverage area of the PE probe, and thus it is impossible to determine how many groups of PE probes are needed to ensure that the PE probe sound beam fully covers the detection area.
[0030] Therefore, the utility model provides a test block for measuring the PE horizontal coverage range during TOFD and PE combined detection, such as Figure 1 and Figure 2 As shown, it includes a first detection surface 1, on which a horizontal artificial reflector 101 is arranged, and a plurality of horizontal artificial reflectors 101 are arranged to form an effective coverage range measurement area of the PE probe sound beam in the horizontal direction, and the horizontal coverage range of the PE probe sound beam is measured by the PE probe sound beam echo on the horizontal artificial reflector 101. The number of PE probe groups is determined according to the weld groove type, weld width and heat affected zone detection range to meet the full coverage of the detection area, and to guide the number of PE probe groups required to be applied when formulating the TOFD and PE combined detection process, so as to ensure the full coverage of the TOFD blind area by the PE probe sound beam.
[0031] A center line 102 is provided on the first detection surface 1, and horizontal artificial reflectors 101 are arranged in pairs, each pair of horizontal artificial reflectors 101 is symmetrically arranged with the center line 102 as a symmetry axis, and multiple pairs of horizontal artificial reflectors 101 are distributed in parallel in a gradually increasing manner, that is, the spacing between each pair of artificial reflectors gradually increases, and the spacing between adjacent pairs of horizontal artificial reflectors 101 in the direction of the center line 102 is the same. Optionally, the center line 102 is a laser marking line.
[0032] Preferably, the horizontal artificial reflector 101 is formed by opening a groove with a semicircular cross-section on the first detection surface 1. At the same time, those skilled in the art can also use grooves with other cross-sectional shapes to form the horizontal artificial reflector 101 as needed, such as grooves with a rectangular cross-sectional shape or a triangular cross-sectional shape.
[0033] A PE probe angle marking line 103 is provided on the first detection surface 1 to locate the position of the PE probe during testing. Optionally, the PE probe angle marking line 103 is a laser marking line, which is used by the tester to quickly find the position of the PE probe during testing.
[0034] The PE probe angle marking lines 103 are arranged in groups, and each group of PE probe angle marking lines 103 is located on both sides of the center line 102. Each group of PE probe angle marking lines 103 matches each other, and each PE probe angle marking line 103 is parallel to the center line 102. After the tester calculates the distance between the front end of the probe and the center line 102 of the test block according to the actual measured angle of the probe, the PE probe is kept perpendicular to the center line 102 of the test block and moves horizontally, that is, moves along the PE probe angle marking line 103 until the next horizontal artificial reflector 101 scanned has no echo display or the amplitude is reduced by half (6dB), then it can be considered that the distance between this pair of horizontal artificial reflectors 101 is: the horizontal coverage range of the PE probe sound beam.
[0035] like Figure 1 and Figure 3 As shown, the test block provided by the embodiment of the utility model for measuring the horizontal coverage range of PE during TOFD and PE combined detection also includes a second detection surface 2 and a third detection surface 3. The second detection surface 2 and the third detection surface 3 are symmetrically arranged on opposite sides of the first detection surface 1. The second detection surface 2 and the third detection surface 3 form a TOFD scanning surface blind area height measurement area for measuring the height of the TOFD scanning surface blind area, providing data for making a distance-amplitude curve of the PE probe, and then quantifying the defects through the distance-amplitude curve.
[0036] like Figure 4As shown, the second detection surface 2 is provided with a first circular hole 100 and a third circular hole 300, and the third detection surface 3 is provided with a second circular hole 200 and a fourth circular hole 400. The centers of the first circular hole 100, the second circular hole 200, the third circular hole 300 and the fourth circular hole 400 are located on the same plane to form a center plane, and the center plane is perpendicular to the first detection surface 1, so that the first circular hole 100, the second circular hole 200, the third circular hole 300 and the fourth circular hole 400 jointly form a vertical artificial reflector for measuring the blind area height of the TOFD scanning surface.
[0037] The projection of the second circular hole 200 on the second detection surface 2 is tangent to the first circular hole 100 and the third circular hole 300 respectively, and the projection of the third circular hole 300 on the third detection surface 3 is tangent to the second circular hole 200 and the fourth circular hole 400 respectively, so that the measurement ranges of the first circular hole 100 and the fourth circular hole 400 are continuous.
[0038] The first circular hole 100, the second circular hole 200, the third circular hole 300 and the fourth circular hole 400 have the same aperture to standardize the measured unit height, which is convenient for testers to collect data on the height of the blind area of the TOFD scanning surface. The first circular hole 100 and the third circular hole 300 have different depths, and the second circular hole 200 and the fourth circular hole 400 have different depths, which is convenient for testers to distinguish different circular holes.
[0039] It should be noted that the number of vertical artificial reflectors for measuring the blind area height of the TOFD scanning surface is not limited to 4 and can be flexibly set according to actual needs.
[0040] When the weld quality standard is very high, in order to more accurately determine the PE horizontal coverage and the height of the blind area of the TOFD scanning surface, a double-sided test is performed using a test block for determining the PE horizontal coverage during TOFD and PE combined testing provided by the embodiment of the utility model, such as Figure 4 and Figure 5 As shown, it also includes a fourth detection surface 4, which is arranged in reverse symmetry with the first detection surface 1;
[0041] A fifth circular hole 500 and a seventh circular hole 700 are provided on the second detection surface 2, and the fifth circular hole 500 and the seventh circular hole 700 are arranged symmetrically in the opposite direction to the second circular hole 200 and the fourth circular hole 400. A sixth circular hole 600 and an eighth circular hole 800 are provided on the third detection surface 3, and the sixth circular hole 600 and the eighth circular hole 800 are arranged symmetrically in the opposite direction to the first circular hole 100 and the third circular hole 300, so as to form a TOFD scanning surface blind spot height measurement area adapted to the fourth detection surface 4.
[0042] The steps for using the test block for measuring the PE horizontal coverage range during TOFD and PE combined detection provided by the embodiment of the utility model are as follows:
[0043] S1. Develop TOFD testing process based on the thickness of the workpiece to be tested;
[0044] S2. Determine the effective coverage of the PE probe sound beam in the horizontal direction. According to the width of the weld inspection area, determine the number of PE probe groups required to ensure full coverage of the weld inspection area; determine the horizontal coverage of the PE probe sound beam through the PE probe sound beam echo on the horizontal artificial reflector 101, and determine the number of PE probe groups required according to the width of the inspection area of the workpiece to be inspected;
[0045] S3. Calculate the height of the TOFD bottom blind area and measure the height of the TOFD scanning surface blind area; draw the distance-amplitude curve of the PE probe through the vertical artificial reflector in the TOFD scanning surface blind area height measurement area to assist in the quantification of defects in the TOFD blind area;
[0046] S4. Finally, install the PE probe on the TOFD scanning frame to perform on-site inspection of the workpiece. If necessary, remove the PE probe from the scanning frame for precise quantification.
[0047] The utility model measures the boundary of the main sound beam of the PE probe by designing a horizontal artificial reflector 101 on the test block to determine the size of the coverage area in the TOFD blind area. At the same time, the distance-amplitude curve of the PE probe in the TOFD blind area is obtained through the vertical artificial reflector. The defects detected in the TOFD blind area are accurately quantified, the defect detection rate and quantification accuracy are improved, the quality of the engineering project is guaranteed, and the utility model can be widely promoted and used in the project.
[0048] The utility model has a simple structure and is easy to operate. It effectively solves the problem that the horizontal coverage of the TOFD blind area by the main sound beam of the PE probe cannot be measured in the existing test block types. It can guide the number of PE probes required when formulating the TOFD and PE combined detection process to ensure full coverage of the TOFD blind area by the PE probe sound beam, avoid defect omission due to incomplete coverage of the detection area by the PE probe sound beam, and thus ensure the quality of the product weld.
[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. A test block for measuring PE horizontal coverage during TOFD and PE combined testing, characterized in that: It includes a first detection surface, on which a horizontal artificial reflector is arranged. A plurality of horizontal artificial reflectors are arranged to form an effective coverage range measurement area of a PE probe sound beam in the horizontal direction. The horizontal coverage range of the PE probe sound beam is measured by the PE probe sound beam echo on the horizontal artificial reflector.
2. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 1, characterized in that: A center line is provided on the first detection surface, and horizontal artificial reflectors are arranged in pairs. Each pair of horizontal artificial reflectors is symmetrically arranged with the center line as a symmetry axis, and multiple pairs of horizontal artificial reflectors are distributed in parallel in a gradually increasing manner.
3. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 2, characterized in that: A horizontal artificial reflector is formed on the first detection surface by providing a groove with a semicircular cross section.
4. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 2, characterized in that: A PE probe angle marking line is provided on the first detection surface to locate the position of the PE probe during testing.
5. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 4, characterized in that: The PE probe angle marking lines are arranged in groups, each group of PE probe angle marking lines is located on both sides of the center line, each group of PE probe angle marking lines matches each other, and each PE probe angle marking line is parallel to the center line.
6. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 1, characterized in that: It also includes a second detection surface and a third detection surface, which are symmetrically arranged on opposite sides of the first detection surface, and the second detection surface and the third detection surface form a TOFD scanning surface blind area height measurement area for measuring the TOFD scanning surface blind area height.
7. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 6, characterized in that: The second detection surface is provided with a first circular hole and a third circular hole, the third detection surface is provided with a second circular hole and a fourth circular hole, the center of the first circular hole, the center of the second circular hole, the center of the third circular hole and the center of the fourth circular hole are located on the same plane to form a center plane, and the center plane is perpendicular to the first detection surface.
8. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 7, characterized in that: The projection of the second circular hole on the second detection surface is tangent to the first circular hole and the third circular hole respectively, and the projection of the third circular hole on the third detection surface is tangent to the second circular hole and the fourth circular hole respectively.
9. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 8, characterized in that: The first circular hole, the second circular hole, the third circular hole and the fourth circular hole have the same aperture, the first circular hole and the third circular hole have different depths, and the second circular hole and the fourth circular hole have different depths.
10. The test block for measuring PE horizontal coverage during TOFD and PE combined detection according to claim 7, characterized in that: It also includes a fourth detection surface, which is arranged in reverse symmetry with the first detection surface; The second detection surface is provided with a fifth circular hole and a seventh circular hole, which are arranged symmetrically in the opposite direction to the second circular hole and the fourth circular hole. The third detection surface is provided with a sixth circular hole and an eighth circular hole, which are arranged symmetrically in the opposite direction to the first circular hole and the third circular hole, so as to form a TOFD scanning surface blind spot height measurement area adapted to the fourth detection surface.