Verification test block and verification method for phased array ultrasonic detection of plate butt joint

Abstract

The invention relates to the technical field of ultrasonic detection, and discloses a verification test block and a verification method for phased array ultrasonic detection of a plate butt joint. The plurality of first verification test blocks have various specifications, and each first verification test block is provided with a first simulation defect. The multiple second verification test blocks have multiple specifications, each second verification test block comprises a first plate and a second plate which are connected in a welded mode, a weld joint is formed at the joint of the first plate and the second plate, and the first plate, the second plate and / or the weld joint are / is provided with second simulation defects. The verification test block and the verification method provide an inspection basis for plate quality detection in ship production and manufacturing, can ensure the reliability of a phased array ultrasonic detection result, and improve the efficiency of ship plate quality detection. The first verification test blocks and the second verification test blocks of various specifications can provide inspection basis for quality detection of plates of different specifications, can meet detection requirements of the plates with different quality requirements, and are high in use flexibility.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic testing, and in particular to a verification test block and a verification method for phased array ultrasonic testing of plate joints. Background Art

[0002] The principle of using phased array ultrasonic testing technology to detect weld defects is mainly based on ultrasonic non-destructive testing methods. By using one or more groups of excited ultrasonic beams to scan inside the object, the existence of defects and their location, size and other characteristics can be detected. Phased array technology has high detection accuracy and flexibility.

[0003] In the process of ship manufacturing, a lot of plate welding is involved. In order to check whether the welding quality of the plate meets the requirements, phased array ultrasonic testing technology can be used for testing. However, before testing, the phased array ultrasonic testing instrument needs to be debugged and calibrated. The debugging and calibration usually need to be verified with the corresponding verification test block. At present, there is no verification test block designed for the plate welds of ships, and the reliability of the detection results of the phased array ultrasonic testing instrument cannot be guaranteed.

[0004] Therefore, there is an urgent need for a verification test block and a verification method for phased array ultrasonic testing of plate butt joints to solve the above problems. Summary of the invention

[0005] Based on the above problems, the purpose of the present invention is to provide a verification test block and verification method for phased array ultrasonic testing of plate butt joints, which can provide an inspection basis for ship production quality inspection and ensure the reliability of phased array ultrasonic testing results.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] On the one hand, a verification test block for phased array ultrasonic testing of plate joints is provided, comprising:

[0008] A plurality of first verification test blocks, wherein the plurality of first verification test blocks have various specifications, and each of the first verification test blocks is provided with a first simulated defect;

[0009] A plurality of second verification test blocks are provided, wherein the plurality of second verification test blocks have a plurality of specifications, each of the second verification test blocks comprises a first plate and a second plate connected by welding, a weld is formed at the connection between the first plate and the second plate, and a second simulated defect is arranged on the first plate, the second plate and / or the weld.

[0010] As an optional solution for the verification test block for phased array ultrasonic testing of plate butt seams of the present invention, the first simulated defect includes a first hole defect and / or a first groove defect; the sizes of the first hole defects on multiple first verification test blocks are different, and / or the sizes of the first groove defects on multiple first verification test blocks are different.

[0011] As an optional solution of the verification test block for phased array ultrasonic testing of plate joints of the present invention, the first groove defect is concavely provided on two opposite side surfaces of the first verification test block, and the first hole defect extends along the width direction or the length direction of the first verification test block;

[0012] The diameter of the first hole defect is in the range of 1 mm to 4 mm, and the depth L1 of the first hole defect is in the range of 45 mm to 75 mm; and / or,

[0013] The value range of the groove depth D1 of the first groove defect is 0.5mm to 1.5mm; the value range of the groove width W1 of the first groove defect is 0.1mm to 0.4mm; the value range of the groove length L2 of the first groove defect is 5mm to 38mm.

[0014] As an optional solution of the verification test block for phased array ultrasonic testing of plate joints of the present invention, the thickness of the first plate is equal to the thickness of the second plate, and the second simulated defects include multiple weld defects set on the weld.

[0015] As an optional solution of the verification test block for phased array ultrasonic testing of plate joints of the present invention, the thickness of the first plate is greater than the thickness of the second plate, and the second simulated defects include multiple weld defects set on the weld.

[0016] As an optional solution for the verification test block for phased array ultrasonic testing of plate butt joints of the present invention, the various weld defects include a first unfusion defect, a slag inclusion defect, a center crack defect, a dense porosity defect, a toe crack defect, a single porosity defect, a second unfusion defect, an incomplete penetration defect and / or a transverse crack defect.

[0017] As an optional solution for the verification test block for phased array ultrasonic testing of plate butt joints of the present invention, the second simulated defect includes a second hole defect and / or a second groove defect, and the second hole defect and / or the second groove defect are provided on the first plate, the second plate and / or the weld.

[0018] As an optional solution of the verification test block for phased array ultrasonic testing of plate joints of the present invention, the second groove defect is concavely provided on the two opposite side surfaces of the first plate, the two opposite side surfaces of the second plate and / or the weld, and the second hole defect is provided in the weld and extends along the length direction of the weld;

[0019] The diameter of the second hole defect is in the range of 1 mm to 4 mm, and the depth L3 of the second hole defect is in the range of 45 mm to 75 mm; and / or,

[0020] The groove depth D2 of the second groove defect has a value range of 0.5 mm to 1.5 mm; the groove width W2 of the second groove defect has a value range of 0.1 mm to 0.4 mm; and the groove length L4 of the second groove defect has a value range of 5 mm to 38 mm.

[0021] As an optional solution of the verification test block for phased array ultrasonic testing of plate joints of the present invention, the thickness H1 of the first verification test block ranges from 3 mm to 55 mm; and / or,

[0022] The thickness H2 of the first plate and the second plate are both in the range of 3 mm to 55 mm; or, the thickness H21 of the first plate is in the range of 20 mm to 55 mm, and the thickness H22 of the second plate is in the range of 3 mm to 28 mm.

[0023] On the other hand, a method for verifying phased array ultrasonic testing of plate joints is provided, using the verification test block for phased array ultrasonic testing of plate joints as described above, comprising the following steps:

[0024] Select a first verification test block or a second verification test block that matches the specifications of the plate to be tested;

[0025] Scanning and testing the selected first verification test block or the second verification test block by a phased array ultrasonic testing instrument to obtain a test image of the first verification test block or the second verification test block;

[0026] Comparing the obtained detection image with a corresponding standard image of the first verification test block or the second verification test block;

[0027] If the detected image is consistent with the standard image, the debugging of the phased array ultrasonic testing instrument is completed;

[0028] If the detected image does not match the standard image, the phased array ultrasonic testing instrument is continuously debugged until the obtained detected image matches the standard image.

[0029] The beneficial effects of the present invention are:

[0030] The present invention provides a verification block and verification method for phased array ultrasonic testing of plate seams. The first verification block and the second verification block both have standard images of defects corresponding to them. After selecting a first verification block (second verification block) having substantially the same specifications as the plate to be tested, the parameters of the phased array ultrasonic testing instrument (such as the number of sampling points, focusing direction, etc.) are set, and then the probe of the phased array ultrasonic testing instrument is used to scan the selected first verification block (second verification block) to obtain a detection image of the first verification block (second verification block). By comparing the detection image with the standard image, it can be determined whether the phased array ultrasonic testing instrument can detect all the defects in the first verification block (second verification block), thereby verifying whether the phased array ultrasonic testing instrument can be applied to actual testing. Specifically, if the detection image matches the standard image, it indicates that the debugging of the phased array ultrasonic testing instrument is complete, and its detection result is reliable. The debugged phased array ultrasonic testing instrument can be used to detect plates that need to detect weld quality. If the detected image does not match the standard image, it is necessary to set and adjust the parameters of the phased array ultrasonic detection instrument again, and rescan the first verification test block (the second verification test block) until the detected image matches the standard image, and the debugging of the phased array ultrasonic detection instrument is completed. The verification test block and verification method of the present invention provide an inspection basis for plate quality inspection in ship manufacturing, and can ensure the reliability of phased array ultrasonic detection results, thereby improving the efficiency of ship plate quality inspection.

[0031] In addition, first verification test blocks of various specifications and second verification test blocks of various specifications can cover a certain range of plate specifications, providing an inspection basis for quality inspection of plates of different specifications. The first simulated defect is directly designed on the first verification test block, and the detection accuracy of the phased array ultrasonic detection instrument after verification by the first verification test block is relatively low, so plates with relatively low plate quality requirements or relatively low weld quality requirements can be inspected. The second simulated defect is set on the first plate, the second plate and / or the weld, so the detection accuracy of the phased array ultrasonic detection instrument after verification by the second verification test block is relatively high, so plates with high plate quality requirements or high weld quality requirements can be inspected. That is, the design of multiple first verification test blocks and multiple second verification test blocks can also meet the inspection requirements of plates with different quality requirements, and the phased array ultrasonic detection instrument can be debugged and calibrated according to actual inspection requirements, with high flexibility in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0033] Figure 1 is a front view of a first verification test block provided by a specific embodiment of the present invention;

[0034] Figure 2 is a top view of a first verification test block provided in a specific embodiment of the present invention;

[0035] Figure 3 is a side view of a first verification test block provided by a specific embodiment of the present invention;

[0036] Figure 4 is a front view of a second first verification test block provided in a specific embodiment of the present invention;

[0037] Figure 5 is a top view of a second first verification test block provided in a specific embodiment of the present invention;

[0038] Figure 6 is a side view of a second first verification test block provided in a specific embodiment of the present invention;

[0039] Figure 7 is a front view of a third first verification test block provided in a specific embodiment of the present invention;

[0040] Figure 8 is a top view of a third first verification test block provided in a specific embodiment of the present invention;

[0041] Fig. 9 is a side view of a third first verification test block provided in a specific embodiment of the present invention;

[0042] Fig.10 is a front view of a fourth first verification test block provided by a specific embodiment of the present invention;

[0043] Fig.11 is a top view of a fourth first verification test block provided in a specific embodiment of the present invention;

[0044] Fig.12 is a side view of a fourth first verification test block provided in a specific embodiment of the present invention;

[0045] Fig.13 is a front view of a fifth first verification test block provided by a specific embodiment of the present invention;

[0046] Fig.14 is a top view of a fifth first verification test block provided in a specific embodiment of the present invention;

[0047] Fig.15 is a side view of a fifth first verification test block provided by a specific embodiment of the present invention;

[0048] Fig.16 is a front view of a sixth first verification test block provided by a specific embodiment of the present invention;

[0049] Fig.17 is a top view of a sixth first verification test block provided in a specific embodiment of the present invention;

[0050] Fig.18 is a side view of a sixth first verification test block provided by a specific embodiment of the present invention;

[0051] Fig.19 is a front view of a first type of equal-thickness second verification test block provided in a specific embodiment of the present invention;

[0052] Fig. 20 is a top view of a first type of equal-thickness second verification test block provided in a specific embodiment of the present invention;

[0053] Fig.21 yes Fig.19 A partial view of

[0054] Fig. 22 is a front view of a second equal-thickness second verification test block provided in a specific embodiment of the present invention;

[0055] Fig.23 is a top view of a second equal-thickness second verification test block provided in a specific embodiment of the present invention;

[0056] Fig.24 is a front view of a third type of second verification test block of equal thickness provided in a specific embodiment of the present invention;

[0057] Fig.25 is a top view of a third type of second verification test block of equal thickness provided in a specific embodiment of the present invention;

[0058] Fig.26 is a front view of a fourth type of second verification test block of equal thickness provided in a specific embodiment of the present invention;

[0059] Fig. 27 is a top view of a fourth type of second verification test block of equal thickness provided in a specific embodiment of the present invention;

[0060] Fig.28 yes Fig.26 A partial view of

[0061] Fig.29 is a front view of a fifth type of second verification test block of equal thickness provided in a specific embodiment of the present invention;

[0062] Fig.30 yes Fig.29 A partial view of

[0063] Fig.31is a top view of a fifth type of second verification test block of equal thickness provided in a specific embodiment of the present invention;

[0064] Fig.32 is a front view of a sixth type of equal-thickness second verification test block provided by a specific embodiment of the present invention;

[0065] Fig.33 is a top view of a sixth type of second verification test block of equal thickness provided in a specific embodiment of the present invention;

[0066] Fig.34 It is a front view of a first non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0067] Fig.35 is a top view of a first non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0068] Fig.36 yes Fig.34 A partial view of

[0069] Fig.37 is a front view of a second non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0070] Fig.38 is a top view of a second non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0071] Fig.39 is a front view of a third non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0072] Fig.40 is a top view of a third non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0073] Fig.41 is a front view of a fourth non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0074] Fig.42 is a top view of a fourth non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0075] Fig.43 is a front view of a fifth non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0076] Fig.44 is a top view of a fifth non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0077] Fig.45 is a side view of a fifth non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0078] Fig.46 yes Fig.43 A partial view of

[0079] Fig.47 is a front view of a sixth non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0080] Fig.48 is a top view of a sixth non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0081] Fig.49 is a side view of a sixth non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0082] Fig.50 is a front view of a seventh non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0083] Fig.51 is a top view of a seventh non-uniform thickness second verification test block provided by a specific embodiment of the present invention;

[0084] Fig.52 It is a side view of a seventh non-uniform thickness second verification test block provided in a specific embodiment of the present invention.

[0085] In the figure:

[0086] 1-first verification test block; 2-second verification test block;

[0087] 11-first hole defect; 12-first slot defect;

[0088] 21-first plate; 22-second plate; 23-weld;

[0089] 211-Second slot defect;

[0090] 231-first unfused defect; 232-slag inclusion defect; 233-center crack defect; 234-intensive pore defect; 235-toe crack defect; 236-single pore defect; 237-second unfused defect; 238-incomplete penetration defect; 239-transverse crack defect; 230-second hole defect. DETAILED DESCRIPTION

[0091] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0092] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0093] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] like Figures 1 to 52 As shown, this embodiment provides a verification test block for phased array ultrasonic testing of plate joints, which can provide an inspection basis for ship production quality inspection and ensure the reliability of phased array ultrasonic testing results. The verification test block for phased array ultrasonic testing of plate joints includes multiple first verification test blocks 1 and multiple second verification test blocks 2.

[0095] Among them, the plurality of first verification test blocks 1 have various specifications, and a first simulated defect is arranged on each first verification test block 1. The plurality of second verification test blocks 2 have various specifications, and each second verification test block 2 includes a first plate 21 and a second plate 22 connected by welding, a weld 23 is formed at the connection between the first plate 21 and the second plate 22, and a second simulated defect is arranged on the first plate 21, the second plate 22 and / or the weld 23.

[0096] The verification block for phased array ultrasonic testing of plate joints provided in this embodiment has a first verification block 1 and a second verification block 2 both having standard images of defects corresponding thereto. After selecting a first verification block 1 (second verification block 2) having substantially the same specifications as the plate to be tested, the parameters of the phased array ultrasonic testing instrument (such as the number of sampling points, focusing direction, etc.) are set, and then the probe of the phased array ultrasonic testing instrument is used to scan the selected first verification block 1 (second verification block 2), and the detection image of the first verification block 1 (second verification block 2) can be obtained. By comparing the detection image with the standard image, it can be determined whether the phased array ultrasonic testing instrument can detect all the defects in the first verification block 1 (second verification block 2), and then verify whether the phased array ultrasonic testing instrument can be applied to actual testing. Specifically, if the detection image matches the standard image, it indicates that the debugging of the phased array ultrasonic testing instrument is complete, and its detection result is reliable. The debugged phased array ultrasonic testing instrument can be used to detect the plate whose weld 23 quality needs to be tested. If the detected image does not match the standard image, it is necessary to set and adjust the parameters of the phased array ultrasonic testing instrument again, and rescan the first verification test block 1 (the second verification test block 2) until the detected image matches the standard image, and the debugging of the phased array ultrasonic testing instrument is completed. In other words, the verification test block can provide an inspection basis for plate quality inspection in ship manufacturing, ensure the reliability of phased array ultrasonic inspection results, and improve the efficiency of ship plate quality inspection.

[0097] In addition, the first verification test blocks 1 of various specifications and the second verification test blocks 2 of various specifications can cover a certain range of plate specifications, providing an inspection basis for the quality inspection of plates of different specifications. The first simulated defect is directly designed on the first verification test block 1. The detection accuracy of the phased array ultrasonic detection instrument after verification by the first verification test block 1 is relatively low, and the plate with relatively low plate quality requirements or relatively low weld 23 quality requirements can be inspected. The second simulated defect is set on the first plate 21, the second plate 22 and / or the weld 23. Therefore, the detection accuracy of the phased array ultrasonic detection instrument after verification by the second verification test block 2 is relatively high, and the plate with high plate quality requirements or high weld 23 quality requirements can be inspected. That is, the design of multiple first verification test blocks 1 and multiple second verification test blocks 2 can also meet the inspection requirements of plates with different quality requirements, and the phased array ultrasonic detection instrument can be debugged and calibrated according to actual inspection requirements, with high flexibility in use.

[0098] The following introduces different first verification test blocks 1 and second verification test blocks 2 in combination with Embodiments 1 to 4.

[0099] Embodiment 1

[0100] like Figures 1 to 18 As shown, the first verification test block 1 is a plate-like structure. Figures 1 to 18The first verification test block 1 of different plate thicknesses is shown, and the value range of the thickness H1 of the first verification test block 1 is 3mm to 55mm. The first verification test block 1 within this thickness range can cover the plate specifications commonly used in shipbuilding, thereby providing an inspection basis for plates of different specifications to be tested.

[0101] For example, Figure 1 , Figure 2 and Figure 3 As shown, it is the first verification test block 1 with a thickness of 5 mm; Figure 4 , Figure 5 and Figure 6 As shown, it is the first verification test block 1 with a thickness of 9 mm; Figure 7 , Figure 8 and Fig. 9 As shown, it is the first verification test block 1 with a thickness of 15 mm; Fig.10 , Fig.11 and Fig.12 As shown, it is the first verification test block 1 with a thickness of 25 mm; Fig.13 , Fig.14 and Fig.15 As shown, it is the first verification test block 1 with a thickness of 38 mm; Fig.16 , Fig.17 and Fig.18 As shown, it is the first verification test block 1 with a plate thickness of 50 mm.

[0102] It is understandable that the above only shows the first verification test blocks 1 of several plate thicknesses. In other embodiments, the number of first verification test blocks 1 can be increased accordingly according to the thickness of the plate to be tested, and is not limited to the plate thicknesses listed above.

[0103] Optionally, the first simulated defect includes a first hole defect 11 and / or a first slot defect 12. When the probe of the phased array ultrasonic testing instrument scans the first hole defect 11 and / or the first slot defect 12, if the positions of the first hole defect 11 and / or the first slot defect 12 can be intuitively displayed, it indicates that the debugging of the phased array ultrasonic testing instrument is complete and can be put into use, and its detection results are accurate and reliable.

[0104] For example, see Figure 1 , Figure 2 and Figure 3 The first verification test block 1 is provided with a first hole defect 11 and a first groove defect 12 at the same time, which can improve the detection accuracy after verification by the phased array ultrasonic detection instrument.

[0105] See also Figure 2 , Figure 5 , Figure 8 , Fig.11 , Fig.14 as well as Fig.17, the sizes of the first hole defects 11 on the multiple first verification test blocks 1 are different, and the sizes of the first groove defects 12 on the multiple first verification test blocks 1 are different. In this embodiment, the larger the plate thickness, the larger the hole depth L1 of the first hole defect 11 and the larger the groove length L1 of the first groove defect 12, so that the defect size on the plate of corresponding thickness can be simulated more realistically, and the detection accuracy after verification by the phased array ultrasonic detection instrument is improved.

[0106] In other embodiments, the apertures of the first hole defects 11 of different first verification test blocks 1 may be designed to be different, or the groove depths of the first groove defects 12 of different first verification test blocks 1 may be designed to be different, or the groove widths of the first groove defects 12 of different first verification test blocks 1 may be designed to be different.

[0107] Optionally, see Figure 1 and Figure 3 The first verification test block 1 has first groove defects 12 recessed on two opposite side surfaces, and the first hole defects 11 extend along the width direction or the length direction of the first verification test block 1, which can simulate the groove defects or hole defects that may exist in the plate in reality as realistically as possible.

[0108] In other embodiments, the first groove defect 12 may be provided only on one side of the first verification test block 1 , or the first hole defect 11 may be provided only on the first verification test block 1 .

[0109] Optionally, one or more first hole defects 11 may be provided on the first verification test block 1. For example, different numbers of first hole defects 11 may be provided for first verification test blocks 1 of different thicknesses. Figure 3 and Figure 6 As shown, a first hole defect 11 is provided on the first verification test block 1 with a thickness of 5 mm and 9 mm; Fig. 9 As shown, two first hole defects 11 are provided on the first verification test block 1 with a thickness of 15 mm; Fig.12 , Fig.15 and Fig.18 As shown, three first hole defects 11 are arranged on the first verification test blocks 1 with plate thicknesses of 25 mm, 38 mm and 50 mm.

[0110] Optionally, the aperture of the first hole defect 11 has a value range of 1 mm to 4 mm, and the hole depth L1 of the first hole defect 11 has a value range of 45 mm to 75 mm. The first verification test block 1 within this size range can cover the types of hole defects of plates commonly used in shipbuilding, so that the phased array ultrasonic detection instrument can detect different types of hole defects and improve the detection accuracy.

[0111] For example, Figure 3As shown in FIG. 1 , the diameter of the first hole defect 11 on the first verification test block 1 with a thickness of 5 mm is 2 mm, and the hole depth L1 of the first hole defect 11 is 45 mm. Figure 6 As shown in FIG. 1 , the diameter of the first hole defect 11 on the first verification test block 1 with a thickness of 9 mm is 2.5 mm, and the hole depth L1 of the first hole defect 11 is 45 mm. Fig. 9 As shown, there are two first hole defects 11 on the first verification test block 1 with a thickness of 15 mm, both with a hole diameter of 2.5 mm, a hole depth L1 of one first hole defect 11 of 45 mm, and a hole depth L1 of the other first hole defect 11 of 60 mm. Fig.12 , Fig.15 and Fig.18 As shown, the first verification test blocks 1 with plate thicknesses of 25 mm, 38 mm and 50 mm all have three first hole defects 11, the hole diameters are all 3 mm, and the hole depths L1 are 45 mm, 60 mm and 75 mm respectively.

[0112] It is understandable that only several sizes of the first hole defects 11 are shown above. In other embodiments, the size of the first hole defects 11 can be designed accordingly according to the specifications of the plate to be inspected, and is not limited to the sizes listed above.

[0113] Optionally, the value range of the groove depth D1 of the first groove defect 12 is 0.5 mm to 1.5 mm; the value range of the groove width W1 of the first groove defect 12 is 0.1 mm to 0.4 mm; the value range of the groove length L2 of the first groove defect 12 is 5 mm to 38 mm. The first verification test block 1 within this size range can cover the types of groove defects of plates commonly used in shipbuilding, so that the phased array ultrasonic detection instrument can detect different types of groove defects and improve the detection accuracy.

[0114] For example, Figure 1 , Figure 2 and Figure 3 As shown, the first groove defect 12 on the first verification test block 1 with a thickness of 5 mm has a groove depth D1 of 1 mm, a groove width W1 of 0.2 mm, and a groove length L2 of 5 mm. Figure 4 , Figure 5 and Figure 6 As shown, the groove depth D1 of the first groove defect 12 on the first verification test block 1 with a plate thickness of 9 mm is 1 mm, the groove width W1 is 0.2 mm, and the groove length L2 is 9 mm. The groove depth D1 of the first groove defect 12 on the first verification test blocks 1 with plate thicknesses of 15 mm, 25 mm, 38 mm, and 50 mm are all 1 mm, the groove width W1 is all 0.2 mm, and the groove length L2 is 15 mm, 25 mm, 38 mm, and 40 mm, respectively.

[0115] Embodiment 2

[0116] The thickness of the first plate 21 of the second verification test block 2 of this embodiment is equal to the thickness of the second plate 22, and the second simulated defect includes a plurality of weld defects arranged in the weld 23. That is, the second verification test block 2 is a welded plate of equal thickness, which can provide an inspection basis for the phased array ultrasonic testing of the quality of the weld 23 of the plate of equal thickness.

[0117] like Figures 19 to 33 As shown, second verification test blocks 2 of equal thickness of different specifications are shown, and the value range of thickness H2 of the second verification test block 2 is 3mm to 55mm. The second verification test blocks 2 within this thickness range can cover the plate specifications commonly used in shipbuilding, thereby providing an inspection basis for plates to be tested of different specifications.

[0118] For example, Fig.19 and Fig. 20 As shown, it is a second verification test block 2 with a thickness of 5 mm; Fig. 22 and Fig.23 As shown, it is the second verification test block 2 with a thickness of 9 mm; Fig.24 and Fig.25 As shown, it is the second verification test block 2 with a thickness of 15 mm; Fig.26 and Fig. 27 As shown, it is the second verification test block 2 with a thickness of 25 mm; Fig.29 and Fig.31 As shown, it is the second verification test block 2 with a thickness of 38 mm; Fig.32 and Fig.33 Shown is the second verification test block 2 with a plate thickness of 50 mm.

[0119] The above only shows the second verification test blocks 2 of several plate thicknesses. In other embodiments, the number of second verification test blocks 2 can be increased accordingly according to the thickness of the plate to be tested, and is not limited to the plate thickness listed above.

[0120] Optionally, the multiple weld defects include a first unfused defect 231 , a slag inclusion defect 232 , a center crack defect 233 , a dense porosity defect 234 , a toe crack defect 235 , a single porosity defect 236 , a second unfused defect 237 , an incomplete penetration defect 238 and / or a transverse crack defect 239 .

[0121] In an alternative embodiment, see Fig. 20 and Fig.21 The weld 23 is simultaneously provided with a first unfused defect 231, a slag inclusion defect 232, a central crack defect 233, a dense porosity defect 234, a toe crack defect 235, a single porosity defect 236, a second unfused defect 237 and an incomplete penetration defect 238, which can truly simulate the defects that may occur in the weld 23 in reality and improve the detection accuracy of the phased array ultrasonic detection instrument.

[0122] In another alternative embodiment, see Fig. 27 and Fig.28 The weld 23 is simultaneously provided with a first unfused defect 231, a slag inclusion defect 232, a central crack defect 233, a dense porosity defect 234, a toe crack defect 235, a single porosity defect 236, a second unfused defect 237, an incomplete penetration defect 238 and a transverse crack defect 239, which can more realistically simulate the defects that may occur in the weld 23 in reality and improve the detection accuracy of the phased array ultrasonic detection instrument.

[0123] See also Fig.29 and Fig.30 For thicker plates, the weld 23 may be as follows: Fig.30 The weld 23 is provided with a first unfused defect 231, a slag inclusion defect 232, a central crack defect 233, a dense pore defect 234, a toe crack defect 235, a single pore defect 236, a second unfused defect 237, an incomplete penetration defect 238 and a transverse crack defect 239, but the arrangement positions of the defects are different from those of the weld 23. Fig.28 Such a configuration can cover different types of welding plates, so that different second verification test blocks 2 can provide inspection basis for different types of welding plates.

[0124] Optionally, the sizes of weld defects on plates of different thicknesses can be designed differently to further improve the detection accuracy after verification by the phased array ultrasonic testing instrument. For example, for the second verification test block 2 with a plate thickness of 5 mm, the length of the first unfused defect 231 is less than or equal to 3 mm, the length of the slag inclusion defect 232 is less than or equal to 3 mm, the length of the center crack defect 233 is less than or equal to 3 mm, the length of the dense pore defect 234 is less than or equal to 3 mm, the length of the toe crack defect 235 is less than or equal to 3 mm, the length of the single pore defect 236 is less than or equal to 1.5 mm, the length of the second unfused defect 237 is less than or equal to 3 mm, and the length of the incomplete penetration defect 238 is less than or equal to 3 mm.

[0125] For the second verification test block 2 with a thickness of 9 mm, the lengths of the first unfused defect 231, the slag inclusion defect 232, the central crack defect 233, the dense pore defect 234, the toe crack defect 235, the second unfused defect 237, and the incomplete penetration defect 238 are all less than or equal to 4.5 mm, and the length of the single pore defect 236 is less than or equal to 2 mm.

[0126] For the second verification test block 2 with a thickness of 15 mm, the lengths of the first unfused defect 231, the slag inclusion defect 232, the central crack defect 233, the dense pore defect 234, the toe crack defect 235, the second unfused defect 237, and the incomplete penetration defect 238 are all less than or equal to 7.5 mm, and the length of the single pore defect 236 is less than or equal to 3 mm.

[0127] For the second verification test block 2 with a thickness of 25 mm, the lengths of the first unfused defect 231, slag inclusion defect 232, central crack defect 233, dense pore defect 234, toe crack defect 235, second unfused defect 237, incomplete penetration defect 238, and transverse crack defect 239 are all less than or equal to 12.5 mm, and the length of the single pore defect 236 is less than or equal to 3 mm.

[0128] For the second verification test block 2 with a thickness of 38 mm, the lengths of the first unfused defect 231, slag inclusion defect 232, central crack defect 233, dense pore defect 234, toe crack defect 235, second unfused defect 237, incomplete penetration defect 238, and transverse crack defect 239 are all less than or equal to 19 mm, and the length of the single pore defect 236 is less than or equal to 4 mm.

[0129] For the second verification test block 2 with a thickness of 50 mm, the lengths of the first unfused defect 231, slag inclusion defect 232, central crack defect 233, dense pore defect 234, toe crack defect 235, second unfused defect 237, incomplete penetration defect 238, and transverse crack defect 239 are all less than or equal to 25 mm, and the length of the single pore defect 236 is less than or equal to 4 mm.

[0130] In this embodiment, the larger the plate thickness is, the longer the defect is, so that the weld defects on the plate of corresponding thickness can be simulated more realistically, thereby improving the detection accuracy after verification by the phased array ultrasonic detection instrument.

[0131] Embodiment 3

[0132] The thickness of the first plate 21 of the second verification test block 2 of this embodiment is greater than the thickness of the second plate 22, and the second simulated defects include multiple weld defects set in the weld 23. That is, the second verification test block 2 is a non-uniform thickness welded plate, which can provide an inspection basis for the phased array ultrasonic testing of the quality of the weld 23 of the non-uniform thickness plate.

[0133] like Figures 34 to 42 As shown, different specifications of non-uniform thickness second verification test blocks 2 are shown, wherein the value range of the thickness H21 of the first plate 21 is 20mm to 55mm, and the value range of the thickness H22 of the second plate 22 is 3mm to 28mm. The second verification test blocks 2 within this thickness range can cover the plate specifications commonly used in shipbuilding, thereby providing an inspection basis for plates to be tested of different specifications.

[0134] For example, Fig.34 and Fig.35 As shown, the second verification test block 2 is formed by welding a first plate 21 with a thickness of 20 mm and a second plate 22 with a thickness of 10 mm; Fig.37 and Fig.38 As shown, the second verification test block 2 is formed by welding a first plate 21 with a thickness of 28 mm and a second plate 22 with a thickness of 15 mm; Fig.39 and Fig.40 As shown, the second verification test block 2 is formed by welding a first plate 21 with a thickness of 40 mm and a second plate 22 with a thickness of 20 mm; Fig.41 and Fig.42 As shown, the second verification test block 2 is formed by welding a first plate 21 with a thickness of 55 mm and a second plate 22 with a thickness of 28 mm.

[0135] Only a few second verification test blocks 2 of unequal thickness are shown above. In other embodiments, the number of second verification test blocks 2 can be increased accordingly according to the thickness of the plate to be tested, and is not limited to the plate thickness listed above.

[0136] See also Fig.35 and Fig.36 The weld 23 is provided with a first unfused defect 231, a slag inclusion defect 232, a central crack defect 233, a dense porosity defect 234, a toe crack defect 235, a single porosity defect 236, a second unfused defect 237, an incomplete penetration defect 238 and a transverse crack defect 239. However, the arrangement positions of the defects are different from those in the second embodiment, which can truly simulate the defect types and defect positions that may exist in the weld 23 after welding of plates of non-uniform thickness, and provide an inspection basis for welded plates of non-uniform thickness.

[0137] Optionally, the sizes of weld defects on plates of different thicknesses may be designed to be different, thereby improving the detection accuracy after verification by a phased array ultrasonic testing instrument.

[0138] Exemplarily, for the second verification test block 2 formed by welding a 20 mm thick first plate 21 and a 10 mm thick second plate 22, the lengths of the first unfusion defect 231, the slag inclusion defect 232, the center crack defect 233, the dense porosity defect 234, the toe crack defect 235, the second unfusion defect 237, the incomplete penetration defect 238, and the transverse crack defect 239 are all less than or equal to 5 mm, and the length of the single porosity defect 236 is less than or equal to 2 mm.

[0139] For the second verification test block 2 formed by welding a 28 mm thick first plate 21 and a 15 mm thick second plate 22, the lengths of the first unfusion defect 231, the slag inclusion defect 232, the central crack defect 233, the dense porosity defect 234, the toe crack defect 235, the second unfusion defect 237, the incomplete penetration defect 238, and the transverse crack defect 239 are all less than or equal to 7.5 mm, and the length of the single porosity defect 236 is less than or equal to 3 mm.

[0140] For the second verification test block 2 formed by welding a 40 mm thick first plate 21 and a 20 mm thick second plate 22, the lengths of the first unfusion defect 231, the slag inclusion defect 232, the central crack defect 233, the dense porosity defect 234, the toe crack defect 235, the second unfusion defect 237, the incomplete penetration defect 238, and the transverse crack defect 239 are all less than or equal to 10 mm, and the length of the single porosity defect 236 is less than or equal to 3 mm.

[0141] For the second verification test block 2 formed by welding a 55 mm thick first plate 21 and a 28 mm thick second plate 22, the lengths of the first unfusion defect 231, the slag inclusion defect 232, the central crack defect 233, the dense porosity defect 234, the toe crack defect 235, the second unfusion defect 237, the incomplete penetration defect 238, and the transverse crack defect 239 are all less than or equal to 14 mm, and the length of the single porosity defect 236 is less than or equal to 4 mm.

[0142] In this embodiment, the larger the plate thickness is, the longer the defect is, so that the weld defects on the plate of corresponding thickness can be simulated more realistically, thereby improving the detection accuracy after verification by the phased array ultrasonic detection instrument.

[0143] Embodiment 4

[0144] The thickness of the first plate 21 of the second verification test block 2 of this embodiment is greater than the thickness of the second plate 22, the second simulated defect includes a second hole defect 230 and / or a second groove defect 211, and the first plate 21, the second plate 22 and / or the weld 23 are provided with the second hole defect 230 and / or the second groove defect 211. That is, the second verification test block 2 is a non-uniform thickness welded plate, and the first plate 21, the second plate 22 and / or the weld 23 are provided with the second hole defect 230 and / or the second groove defect 211, which can provide an inspection basis for the phased array ultrasonic detection of the quality of the weld 23 of the non-uniform thickness plate.

[0145] like Figures 43 to 52 As shown, different specifications of non-uniform thickness second verification test blocks 2 are shown, wherein the value range of the thickness H21 of the first plate 21 is 20mm to 55mm, and the value range of the thickness H22 of the second plate 22 is 3mm to 28mm. The second verification test blocks 2 within this thickness range can cover the plate specifications commonly used in shipbuilding, thereby providing an inspection basis for plates to be tested of different specifications.

[0146] For example, Fig.43 , Fig.44 and Fig.45 As shown, the second verification test block 2 is formed by welding a first plate 21 with a thickness of 20 mm and a second plate 22 with a thickness of 10 mm; Fig.47 , Fig.48 and Fig.49As shown, the second verification test block 2 is formed by welding a first plate 21 with a thickness of 40 mm and a second plate 22 with a thickness of 20 mm; Fig.50 , Fig.51 and Fig.52 As shown, the second verification test block 2 is formed by welding a first plate 21 with a thickness of 55 mm and a second plate 22 with a thickness of 28 mm.

[0147] Only a few second verification test blocks 2 of unequal thickness are shown above. In other embodiments, the number of second verification test blocks 2 can be increased accordingly according to the thickness of the plate to be tested, and is not limited to the plate thickness listed above.

[0148] Optionally, a second groove defect 211 is recessed on two opposite side surfaces of the first plate 21, two opposite side surfaces of the second plate 22 and / or the weld 23, and a second hole defect 230 is arranged on the weld 23 and extends along the length direction of the weld 23, which can simulate as realistically as possible the groove defects or hole defects that may exist in the plate and the weld 23 in reality.

[0149] In this embodiment, refer to Fig.43 , Fig.45 and Fig.46 The second groove defect 211 is provided on the lower surface of the first plate 21, the upper surface of the second plate 22, the upper and lower surfaces of the weld 23, and the welding point between the weld 23 and the first plate 21. In other embodiments, the second groove defect 211 may be provided on both surfaces of the first plate 21, both surfaces of the second plate 22, or only on the weld 23, or the second hole defect 230 may be provided on the first plate 21 or the second plate 22.

[0150] Optionally, the sizes of the second hole defects 230 on the plurality of second verification test blocks 2 are different, and the sizes of the second groove defects 211 on the plurality of second verification test blocks 2 are different. In this embodiment, the larger the plate thickness, the larger the hole depth of the second hole defect 230 and the larger the groove length of the second groove defect 211, so as to more realistically simulate the defect size on the plate of corresponding thickness and improve the detection accuracy after verification by the phased array ultrasonic detection instrument.

[0151] Optionally, the aperture of the second hole defect 230 has a value range of 1 mm to 4 mm, and the hole depth L3 of the second hole defect 230 has a value range of 45 mm to 75 mm. The second verification test block 2 within this size range can cover the types of hole defects on the plate weld 23 commonly used in shipbuilding, so that the phased array ultrasonic detection instrument can detect different types of hole defects and improve the detection accuracy.

[0152] For example, the hole diameter of the second hole defect 230 may be 2.5 mm, 3 mm, etc., and the hole depth L3 of the second hole defect 230 may be 45 mm, 60 mm, 75 mm, etc. Fig.44 , Fig.45 and Fig.46 As shown, a second hole defect 230 is provided on the weld 23, with a hole diameter of 2.5 mm and a hole depth of 45 mm. Fig.47 and Fig.49 As shown, three second hole defects 230 are provided on the weld 23, each with a hole diameter of 2.5 mm and a hole depth L3 of 45 mm, 60 mm, and 75 mm, respectively. Fig.50 and Fig.52 As shown, three second hole defects 230 are arranged on the weld 23, the hole diameters are all 3 mm, and the hole depths L3 are 45 mm, 60 mm, and 75 mm respectively.

[0153] Only several sizes of the second hole defects 230 are shown above. In other embodiments, the size of the second hole defect 230 can be designed accordingly according to the specifications of the plate to be detected, and is not limited to the sizes listed above.

[0154] Optionally, the value range of the groove depth D2 of the second groove defect 211 is 0.5 mm to 1.5 mm; the value range of the groove width W2 of the second groove defect 211 is 0.1 mm to 0.4 mm; the value range of the groove length L4 of the second groove defect 211 is 5 mm to 38 mm. The second verification test block 2 within this size range can cover the types of groove defects of plates commonly used in shipbuilding, so that the phased array ultrasonic detection instrument can detect different types of groove defects and improve the detection accuracy.

[0155] For example, Fig.44 , Fig.45 and Fig.46 As shown, the groove depth D2 of the second groove defect 211 on the second verification test block 2 is 1 mm, the groove width W2 is 0.2 mm, and the groove length L4 is 10 mm.

[0156] like Fig.47 , Fig.48 and Fig.49 As shown, the groove depth D2 of the second groove defect 211 on the second verification test block 2 is 1 mm, the groove width W2 is 0.2 mm, and the groove length L4 is 20 mm.

[0157] like Fig.50 , Fig.51 and Fig.52 As shown, the groove depth D2 of the second groove defect 211 on the second verification test block 2 is 1 mm, the groove width W2 is 0.2 mm, and the groove length L4 is 28 mm.

[0158] Only several sizes of the second groove defects 211 are shown above. In other embodiments, the size of the second groove defect 211 can be designed accordingly according to the specifications of the plate to be detected, and is not limited to the sizes listed above.

[0159] Embodiment 5

[0160] This embodiment provides a method for verifying phased array ultrasonic detection of plate butt joints, using a verification test block for phased array ultrasonic detection of plate butt joints as described in any of the above embodiments, including the following steps:

[0161] S1, selecting a first verification test block 1 or a second verification test block 2 that matches the specifications of the plate to be tested;

[0162] S2, scanning and testing the selected first verification test block 1 or the second verification test block 2 by a phased array ultrasonic testing instrument to obtain a detection image of the first verification test block 1 or the second verification test block 2;

[0163] S3, comparing the obtained detection image with the corresponding standard image of the first verification test block 1 or the second verification test block 2;

[0164] S4. If the detected image is consistent with the standard image, the debugging of the phased array ultrasonic testing instrument is completed;

[0165] S5. If the detected image does not match the standard image, continue to debug the phased array ultrasonic testing instrument until the obtained detected image matches the standard image.

[0166] Specifically, in step S1, a first verification test block 1 or a second verification test block 2 having substantially the same thickness as the plate to be tested may be selected according to the thickness of the plate to be tested. Then, the parameters of the phased array ultrasonic testing instrument (such as the number of sampling points, the focusing direction, etc.) are set. In step S2, the probe of the phased array ultrasonic testing instrument is used to scan the selected first verification test block 1 or the second verification test block 2 to obtain a detection image of the first verification test block 1 or the second verification test block 2.

[0167] By comparing the test image with the standard image, it can be determined whether the phased array ultrasonic testing instrument can detect all the defects in the first verification test block 1 or the second verification test block 2, and then verify whether the phased array ultrasonic testing instrument can be used for actual testing. If the test image matches the standard image, it means that the debugging of the phased array ultrasonic testing instrument is complete, and its test results are reliable. The debugged phased array ultrasonic testing instrument can be used to test the plate that needs to test the quality of the weld 23. If the test image does not match the standard image, it is necessary to set and adjust the parameters of the phased array ultrasonic testing instrument again, and rescan the first verification test block 1 or the second verification test block 2 until the test image matches the standard image and the debugging of the phased array ultrasonic testing instrument is complete.

[0168] The phased array ultrasonic detection and verification method for plate seams provides an inspection basis for plate quality inspection in ship manufacturing, can ensure the reliability of phased array ultrasonic detection results, and improve the efficiency of ship plate quality inspection.

[0169] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A verification test block for phased array ultrasonic testing of plate joints, characterized in that: include: A plurality of first verification test blocks (1), wherein the plurality of first verification test blocks (1) have a plurality of specifications, and each of the first verification test blocks (1) is provided with a first simulated defect; A plurality of second verification test blocks (2), wherein the plurality of second verification test blocks (2) have a plurality of specifications, each of the second verification test blocks (2) comprises a first plate (21) and a second plate (22) connected by welding, a weld (23) is formed at a connection between the first plate (21) and the second plate (22), and a second simulated defect is arranged on the first plate (21), the second plate (22) and / or the weld (23).

2. The verification test block for phased array ultrasonic testing of plate joints according to claim 1 is characterized in that: The first simulated defect comprises a first hole defect (11) and / or a first slot defect (12); the sizes of the first hole defects (11) on the plurality of first verification test blocks (1) are different, and / or the sizes of the first slot defects (12) on the plurality of first verification test blocks (1) are different.

3. The verification test block for phased array ultrasonic testing of plate joints according to claim 2 is characterized in that: The first groove defect (12) is concavely provided on two opposite side surfaces of the first verification test block (1), and the first hole defect (11) extends along the width direction or the length direction of the first verification test block (1); The diameter of the first hole defect (11) is in the range of 1 mm to 4 mm, and the depth L1 of the first hole defect (11) is in the range of 45 mm to 75 mm; and / or, The groove depth D1 of the first groove defect (12) has a value range of 0.5 mm to 1.5 mm; the groove width W1 of the first groove defect (12) has a value range of 0.1 mm to 0.4 mm; and the groove length L2 of the first groove defect (12) has a value range of 5 mm to 38 mm.

4. The verification test block for phased array ultrasonic testing of plate joints according to claim 1, characterized in that: The thickness of the first plate (21) is equal to the thickness of the second plate (22), and the second simulated defects include a plurality of weld defects arranged on the weld (23).

5. The verification test block for phased array ultrasonic testing of plate joints according to claim 1, characterized in that: The thickness of the first plate (21) is greater than the thickness of the second plate (22), and the second simulated defects include a plurality of weld defects arranged on the weld (23).

6. The verification test block for phased array ultrasonic testing of plate joints according to claim 4 or 5, characterized in that: The various weld defects include a first lack of fusion defect (231), a slag inclusion defect (232), a center crack defect (233), a dense porosity defect (234), a toe crack defect (235), a single porosity defect (236), a second lack of fusion defect (237), an incomplete penetration defect (238) and / or a transverse crack defect (239).

7. The verification test block for phased array ultrasonic testing of plate joints according to claim 1, characterized in that: The second simulated defect comprises a second hole defect (230) and / or a second groove defect (211), and the second hole defect (230) and / or the second groove defect (211) are arranged on the first plate (21), the second plate (22) and / or the weld (23).

8. The verification test block for phased array ultrasonic testing of plate joints according to claim 7, characterized in that: The second groove defect (211) is concavely provided on two opposite side surfaces of the first plate (21), two opposite side surfaces of the second plate (22) and / or the weld (23); the second hole defect (230) is provided on the weld (23) and extends along the length direction of the weld (23); The diameter of the second hole defect (230) is in the range of 1 mm to 4 mm, and the depth L3 of the second hole defect (230) is in the range of 45 mm to 75 mm; and / or, The groove depth D2 of the second groove defect (211) has a value range of 0.5 mm to 1.5 mm; the groove width W2 of the second groove defect (211) has a value range of 0.1 mm to 0.4 mm; and the groove length L4 of the second groove defect (211) has a value range of 5 mm to 38 mm.

9. The verification test block for phased array ultrasonic testing of plate joints according to any one of claims 1 to 5, characterized in that: The thickness H1 of the first verification test block (1) ranges from 3 mm to 55 mm; and / or, The thickness H2 of the first plate (21) and the second plate (22) are both in the range of 3 mm to 55 mm; or, the thickness H21 of the first plate (21) is in the range of 20 mm to 55 mm, and the thickness H22 of the second plate (22) is in the range of 3 mm to 28 mm.

10. A method for verifying the phased array ultrasonic detection of plate joints, using the verification test block for phased array ultrasonic detection of plate joints as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Selecting a first verification test block (1) or a second verification test block (2) that matches the specifications of the plate to be tested; Scanning and testing the selected first verification test block (1) or the second verification test block (2) using a phased array ultrasonic testing instrument to obtain a detection image of the first verification test block (1) or the second verification test block (2); Comparing the obtained detection image with a corresponding standard image of the first verification test block (1) or the second verification test block (2); If the detected image is consistent with the standard image, the debugging of the phased array ultrasonic testing instrument is completed; If the detected image does not match the standard image, the phased array ultrasonic testing instrument is continuously debugged until the obtained detected image matches the standard image.

Images