Calibration test block for MAUT ultrasonic equipment

Abstract

The utility model discloses an MAUT ultrasonic equipment calibration test block, which is characterized in that a test block body is a rectangular structure block, is formed by Rexolite material, and at least comprises a first test block capable of calibrating equipment short defect resolution and a second test block capable of calibrating imaging transverse and longitudinal geometric dimension measurement errors, and the first test block and the second test block are also used for calibrating the linearity of the phased array instrument and ensuring the positioning and quantitative detection precision of the MAUT equipment, so that the high-precision calibration requirement of the MAUT technology can be met. According to the invention, the detection precision of the MAUT equipment can be effectively improved, and the application of the MAUT technology in the field of industrial materials can be promoted.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic detection instrument calibration, and in particular relates to a test block used for calibrating MAUT ultrasonic equipment. Background Art

[0002] With the application of new industrial materials and the development of detection technology, MAUT (matrix array phased array test equipment) technology has been widely used in many fields such as aviation, aerospace, electricity, shipbuilding, and new energy due to its high precision, high efficiency, and easy interpretation. However, in order to ensure the effectiveness of MAUT equipment detection, regular calibration is an indispensable link. The existing calibration methods are all test blocks designed for PAUT (phased array) equipment and probes, and have low versatility. Since the imaging area of ​​MAUT equipment probes is larger, these test blocks have certain limitations when calibrating MAUT equipment. Area array probes are generally larger, resulting in the MAUT equipment probe size not being able to be effectively placed on the existing test block, making it impossible to calibrate the MAUT instrument on the PAUT metal calibration test block, which in turn affects its subsequent use.

[0003] Therefore, how to provide a professional calibration test block for use with MAUT equipment is an urgent problem that those skilled in the art need to solve. Utility Model Content

[0004] In view of this, the utility model provides a MAUT ultrasonic equipment calibration test block, which has stable electrical performance and excellent physical properties and can meet the high-precision calibration requirements of MAUT technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a calibration test block for a MAUT ultrasonic equipment, wherein the test block body is a rectangular structural block formed from Rexolite. The test block body includes at least a first test block for calibrating the equipment's short defect resolution and a second test block for calibrating the measurement errors of the imaging's transverse and longitudinal geometric dimensions. The first and second test blocks are also used to calibrate the linearity of phased array instruments and ensure the positioning and quantitative detection accuracy of the MAUT equipment.

[0006] The beneficial effects of the utility model are as follows: the device is a professional test block for calibrating MAUT ultrasonic equipment, and is formed of Rexolite material, which has stable electrical performance and excellent physical properties, and can meet the high-precision calibration requirements of MAUT technology. Rexolite is actually a unique cross-linked polystyrene microwave plastic. The use of test blocks made of this material can better match ultrasonic characteristics, has low sound attenuation, and relatively lower required voltage values. It has stable electrical performance and excellent physical properties, can fill the gap in MAUT equipment calibration in the market, can verify the detection effectiveness of MAUT equipment, and provide strong support for the application of this technology in non-destructive testing of industrial materials.

[0007] Preferably, the first test block is a long rectangular structure, and a plurality of detection areas are provided on the side of the first test block from top to bottom. A plurality of detection holes are provided in the detection areas at intervals above and below, and the depths of the multiple detection holes in each detection area are gradually increasing or decreasing.

[0008] The resulting technical effect is: the test block is a long strip, its inspection surface is larger than the area of ​​the MAUT probe, and multiple inspection zones are set on its side. The inspection holes in the inspection zones are not through holes, but blind holes. The depths of the multiple inspection holes in each inspection zone are different. During specific implementation, the probe is placed on the upper surface of the test block, and the minimum defect hole size displayed can be observed on the device's view, thereby obtaining the short defect resolution value.

[0009] Preferably, the detection area includes at least a first detection area, a second detection area and a third detection area. The first detection area, the second detection area and the third detection area are arranged in sequence from top to bottom. Two rows of detection holes are arranged side by side in the first detection area. The diameters of the detection holes in the two rows of detection holes are different. The depths of the multiple detection holes in the first row of detection holes are set to increase from top to bottom, and the depths of the multiple detection holes in the second row of detection holes are set to decrease from top to bottom. The diameters of the detection holes in the second detection area and the third detection area are different. The second detection area and the third detection area are both provided with detection holes in a single row.

[0010] The resulting technical effect is that the test block can calibrate the short defect resolution of the equipment, and by detecting short defects in the test block, the short defect resolution of the MAUT technology can be evaluated. In addition, single-row detection holes are set in the second and third detection areas. Compared with the multiple columns of detection holes in the first detection area, the single-row detection holes can avoid the shadow influence of multiple columns of detection holes, and the detection results are displayed more clearly.

[0011] Preferably, a plurality of detection holes are sequentially provided on the side wall of the second test block from the top to the bottom, the detection holes pass through the two side walls of the second test block, and the aperture of the detection holes is 1 mm.

[0012] The resulting technical effect is that the test block can calibrate the measurement errors of the horizontal and vertical geometric dimensions of the imaging. During specific implementation, the probe measures the horizontal and vertical dimensions of the test block from two directions (either from the side or the top surface) (or when the test block is placed vertically or horizontally), and compares them with the specific detection hole data on the test block to evaluate the horizontal and vertical dimensional geometric errors of the MAUT equipment.

[0013] Preferably, a plurality of through holes are provided on the side wall of the second test block, and the plurality of through holes are distributed in a stepped manner from top to bottom, and the aperture of the through holes is 1.5 mm.

[0014] The resulting technical effect is: similarly, the probe detects the test block from different orientations, thereby evaluating the lateral and longitudinal dimensional geometric errors of the MAUT equipment. The test block series of this solution can calibrate different items. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a first embodiment of a calibration test block for a MAUT ultrasonic device according to the present invention;

[0016] Figure 2 This is a three-view diagram of a second embodiment of a calibration test block for a MAUT ultrasonic device according to the present invention;

[0017] Figure 3 These are three views of a third embodiment of a calibration test block for a MAUT ultrasonic device according to the present invention.

[0018] 1. First test block, 2. Second test block, 3. Inspection hole, 4. Through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See the attached Figures 1 to 3 , attached Figure 1 The two sides in the middle are the AA cross-section and the BB cross-section, and the bottom is the end view of the test block.

[0021] Attachment Figure 2 The three views in FIG. 1 are three views of the second embodiment; Figure 3 The three views in the figure are the three views of the third instance.

[0022] According to an embodiment of the present invention, a MAUT ultrasonic equipment calibration test block is provided. The test block body is a rectangular structural block, and the test block body is formed of Rexolite material. Rexolite is a unique cross-linked polystyrene microwave plastic with stable electrical properties: Rexolite is the only cross-linked polystyrene microwave plastic in the frequency range of gigahertz, has stable electrical properties, and is suitable for high-frequency ultrasonic testing; it has transparent optical properties and has a slight yellow color when polished; it has good dimensional stability, which can ensure the accuracy of the calibration test block; in addition, it also has excellent sound transmission performance and low sound attenuation, reduces ultrasonic detection deviation, and helps to improve the accuracy of ultrasonic calibration.

[0023] The test block body at least includes a first test block 1 that can calibrate the short defect resolution of the equipment, and a second test block 2 that can calibrate the measurement errors of the horizontal and vertical geometric dimensions of the imaging. It should be noted that the horizontal and vertical imaging correspond to different detection directions of the probe to obtain the detection results. During specific implementation, the second test block also has different classifications for different projects. It can be understood that the test block is a set of components used together. The first test block 1 and the second test block 2 are also used to calibrate the linearity of the phased array instrument. The linearity includes horizontal linearity and vertical linearity. Horizontal linearity refers to the degree of proportionality between the horizontal scale value displayed on the time base on the display screen and the actual sound path; and vertical linearity is the proportional relationship between the wave height on the screen and the amplitude of the signal received by the probe.

[0024] When measuring the specific linearity, it is necessary to avoid the test hole array of the test block and to test in the densely filled area.

[0025] The linearity of phased array instruments is evaluated to ensure the positioning and quantitative detection accuracy of MAUT equipment.

[0026] During the specific production, the test block adopts advanced mechanical processing technology to ensure the dimensional accuracy (surface roughness less than 0.8, dimensional tolerance ±0.05) and surface quality of the test block to meet the calibration requirements of the MAUT equipment.

[0027] For specific application example 1, please refer to the attached Figure 1 The first test block 1 is a long rectangular structure. A plurality of detection areas are provided on the side of the first test block 1 from top to bottom (taking the orientation shown in the figure as a reference standard, specifically, there should be multiple detection areas from one end of the test block to the other end). A plurality of detection holes 3 are provided at intervals above and below in the detection area, and the depths of the multiple detection holes in each detection area are gradually increased or decreased.

[0028] Specifically, the four detection holes in the left column of the first detection area are all Ф2 holes, and the hole depths from top to bottom are 2mm, 4mm, 6mm and 8mm respectively; the four detection holes in the right column are all Ф4 holes, and the hole depths from top to bottom are 7mm, 5mm, 3mm and 1mm respectively; the four detection holes in the second detection area in the middle are all Ф4 holes, and their hole depths from top to bottom are 7mm, 5mm, 3mm and 1mm respectively; the four detection holes on the third detection area at the bottom are all Ф2 holes, and their hole depths from top to bottom are 2mm, 4mm, 6mm and 8mm respectively. It should be noted that the dimensional tolerance of each hole is ±0.05; it can be understood that the second and third detection areas are both single-row openings, which can avoid the influence of the rear shadow of the equipment during detection. Figure 1 In order to better display the structural feature relationship, it is placed vertically. During the specific test, it needs to be placed flat, and then the probe is placed on the upper surface of the test block.

[0029] When in use, place the probe on the upper surface of the test block. The length of the minimum defect hole displayed can be observed on the view of the equipment, and the value of the short defect resolution can be obtained. The ability to distinguish and display short defects on the oscilloscope screen is called resolution.

[0030] Application Example 2, refer to the attached Figure 2 The second test block 2 is a rectangular structural block, and its external dimensions are different from those of application example 1. A plurality of detection holes 3 are sequentially arranged on its side walls from top to bottom. The detection holes 3 pass through both side walls of the second test block, and the aperture of the detection holes 3 is 1 mm.

[0031] The test block can calibrate the measurement error of the transverse geometric dimension of imaging and the measurement error of the longitudinal geometric dimension of imaging. There is a transverse detection hole with a diameter of Ф1 on the test block. When the probe is placed on the surface of the test block, the instrument view will present the distance information of each hole. By measuring the transverse and longitudinal dimensions of the hole (the probe needs to be placed on the top or side of the test block accordingly), and comparing them with the actual dimensions of each hole on the test block, the measurement error of the transverse and longitudinal geometric dimension of imaging can be obtained.

[0032] Application Example 3, compared with Example 2, can calibrate different items, refer to the attached Figure 3 The sidewall of the second test block 2 is provided with multiple through-holes 4, staggered from top to bottom, with a diameter of 1.5 mm. This test block can also be used to calibrate the measurement error of the imaging transverse and longitudinal geometric dimensions. The test block has transverse through-holes with a diameter of 1.5 mm. The probe is placed on the surface of the test block (either on the side or the surface, or with the test block placed flat or vertically and the probe placed on the test block surface for measurement). The instrument view will display the distance information of each hole. By measuring the transverse and longitudinal dimensions of the holes and comparing them with the actual dimensions of each hole on the test block, the transverse and longitudinal geometric dimension measurement errors of the imaging are obtained.

[0033] The test block proposed in this solution features low density, light weight, high rigidity, dimensional stability, excellent acoustic transparency, superior optical properties, and stable machinability, perfectly matching the requirements of a calibration test block. It can meet the high-precision calibration requirements of MAUT technology. This solution can effectively improve the detection accuracy of MAUT equipment and promote the application of MAUT technology in the industrial materials field. This test block is widely applicable in industrial testing, medical diagnostics, and other fields, meeting broad market demand, with strong adaptability and high reliability.

[0034] As for the devices and methods of use disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the methods.

[0035] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A MAUT ultrasonic equipment calibration test block, characterized in that: The test block body is a rectangular structural block, and the test block body is formed of Rexolite material. The test block body at least comprises a first test block (1) capable of calibrating the short defect resolution of the equipment, and a second test block (2) for calibrating the measurement errors of the transverse and longitudinal geometric dimensions of the imaging. The first test block (1) and the second test block (2) are also used to calibrate the linearity of the phased array instrument and ensure the positioning and quantitative detection accuracy of the MAUT equipment.

2. A MAUT ultrasonic equipment calibration test block according to claim 1, characterized in that: The first test block (1) is a long rectangular structure. The side of the first test block (1) is provided with a plurality of detection areas in sequence from the top to the bottom. A plurality of detection holes (3) are provided in the detection areas at intervals above and below. The depths of the plurality of detection holes in each detection area are gradually increased or decreased.

3. A MAUT ultrasonic equipment calibration test block according to claim 2, characterized in that: The detection area at least includes a first detection area, a second detection area and a third detection area. The first detection area, the second detection area and the third detection area are arranged in sequence from top to bottom. Two rows of detection holes are arranged side by side in the first detection area. The diameters of the detection holes in the two rows of detection holes are different. The depths of the multiple detection holes in the first row of detection holes are set to increase from top to bottom, and the depths of the multiple detection holes in the second row of detection holes are set to decrease from top to bottom. The diameters of the detection holes in the second detection area and the third detection area are different. The second detection area and the third detection area are both provided with detection holes in a single row.

4. A MAUT ultrasonic equipment calibration test block according to claim 1, characterized in that: A plurality of detection holes (3) are sequentially arranged on the side wall of the second test block (2) from the top to the bottom. The detection holes (3) penetrate the two side walls of the second test block. The diameter of the detection holes (3) is 1 mm.

5. A MAUT ultrasonic equipment calibration test block according to claim 1, characterized in that: A plurality of through holes (4) are provided on the side wall of the second test block (2), and the plurality of through holes (4) are distributed in a staggered manner from top to bottom, and the aperture of the through holes (4) is 1.5 mm.

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