Sound velocity measuring and calculating method and system based on double ultrasonic probes

Abstract

The invention belongs to the technical field of ultrasonic measurement, and particularly relates to a sound velocity measuring and calculating method and system based on double ultrasonic probes, and the method comprises the steps: obtaining ultrasonic signals of the double ultrasonic probes; calculating primary wave sound time and secondary wave sound time based on the acquired ultrasonic signal; according to the obtained primary wave sound time and secondary wave sound time, the zero offset of the ultrasonic bolt stress detector is calculated, and sound velocity measurement and calculation based on the double ultrasonic probes are completed; wherein in the process of acquiring the ultrasonic signal, an ultrasonic bolt stress detector is mounted on the selected standard test block, and double ultrasonic probes connected with the ultrasonic bolt stress detector are respectively arranged on two sides of the standard test block; after the positions of the double ultrasonic probes are corrected, ultrasonic signals are obtained based on the double ultrasonic probes.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrasonic measurement, and in particular relates to a sound velocity measurement method and system based on dual ultrasonic probes. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Ultrasonic nondestructive testing is a technology that uses the propagation characteristics of ultrasonic waves in materials to detect internal defects of materials. By emitting ultrasonic waves, it is determined whether there are defects such as cracks and pores inside the material based on the reflected waves, without damaging the object being tested, so as to ensure the quality of the project and the safe operation of the equipment. In the industrial field, ultrasonic nondestructive testing can be used to test various materials such as metals and non-metals, discover potential problems in a timely manner, avoid accidents caused by material defects, reduce maintenance costs, improve production efficiency, and provide strong support for the safe and stable development of various industries.

[0004] As the pace of global industrialization accelerates, the requirements for product quality and safety are becoming increasingly stringent, and the application scope of ultrasonic technology has also expanded to many key fields such as aerospace, transportation, and industrial manufacturing. In these fields, tiny defects inside the material are often directly related to the overall performance and service life of the product, and even its safety. Therefore, improving the accuracy of ultrasonic testing has become a technical problem that needs to be solved urgently, and the zero bias problem of ultrasonic probes has become one of the key factors affecting the detection accuracy.

[0005] Probe zero offset, that is, the slight deviation of the probe caused by installation, manufacturing or environmental factors during the detection process, can significantly affect the propagation path and received signal of the ultrasonic wave, thereby introducing detection errors. In the manufacturing and quality control of metal and non-metallic materials, as well as in the quality assessment of welding processes, accurate measurement and correction of probe zero offset is an important guarantee to ensure the accuracy of test results and prevent material waste and safety accidents. In addition, the influence of ultrasonic probe zero offset research goes far beyond the scope of non-destructive testing. It also shows broad application prospects in many fields such as medical health, automotive industry, robotics and automation, and underwater detection. With the continuous advancement and cross-integration of science and technology, ultrasonic testing technology will continue to innovate, and the accurate measurement and effective correction of probe zero offset will become a key link in promoting technological progress in these fields and improving product quality and safety performance. Summary of the invention

[0006] In order to solve the above problems, the present invention proposes a sound velocity measurement method and system based on dual ultrasonic probes, which can accurately measure the sound velocity value of the ultrasonic probe and improve the accuracy of ultrasonic detection.

[0007] According to some embodiments, a first solution of the present invention provides a sound velocity measurement method based on dual ultrasonic probes, which adopts the following technical solution:

[0008] A sound velocity measurement method based on dual ultrasonic probes, comprising:

[0009] Acquire ultrasonic signals of dual ultrasonic probes;

[0010] Based on the acquired ultrasonic signal, the primary wave acoustic time and the secondary wave acoustic time are calculated;

[0011] According to the obtained primary wave acoustic time and secondary wave acoustic time, the zero bias of the ultrasonic bolt stress detector is calculated, and the sound velocity measurement based on the dual ultrasonic probe is completed;

[0012] In the process of obtaining ultrasonic signals, an ultrasonic bolt stress detector is installed on the selected standard test block, and dual ultrasonic probes connected to the ultrasonic bolt stress detector are respectively placed on both sides of the standard test block. After the positions of the dual ultrasonic probes are calibrated, ultrasonic signals are obtained based on the dual ultrasonic probes.

[0013] As a further technical limitation, during the calibration of the dual ultrasonic probes, the dual ultrasonic probes are positioned according to their positions on the standard test block so that they are on the same horizontal line, and then the gain value of the ultrasonic bolt stress detector is adjusted to complete the calibration of the dual ultrasonic probes.

[0014] As a further technical limitation, the probe based on the ultrasonic stress detector transmits ultrasonic waves into the interior of the test block. According to the internal state of the test block, an ultrasonic signal graph with ups and downs is displayed on the screen of the ultrasonic stress detector, that is, the ultrasonic signal of the dual ultrasonic probe is obtained.

[0015] As a further technical limitation, the primary wave speed and the secondary wave time are both selected as the intersection value of the highest wave and the 50 wave height ratio baseline.

[0016] As a further technical limitation, the zero bias T0 of the ultrasonic bolt stress detector is Among them, T1 and T2 are the first wave sound time and the second wave sound time respectively.

[0017] As a further technical limitation, the sound velocity value V0 of the ultrasonic probe under zero stress is

[0018] According to some embodiments, a second solution of the present invention provides a sound velocity measurement system based on dual ultrasonic probes, which adopts the following technical solution:

[0019] A sound velocity measurement system based on dual ultrasonic probes, comprising:

[0020] An acquisition module, configured to acquire ultrasonic signals from dual ultrasonic probes;

[0021] A calculation module, configured to calculate the primary wave acoustic time and the secondary wave acoustic time based on the acquired ultrasonic signal;

[0022] A calculation module, which is configured to calculate the zero bias of the ultrasonic bolt stress detector according to the obtained primary wave acoustic time and secondary wave acoustic time, and complete the sound velocity measurement based on the dual ultrasonic probes;

[0023] In the process of obtaining ultrasonic signals, an ultrasonic bolt stress detector is installed on the selected standard test block, and dual ultrasonic probes connected to the ultrasonic bolt stress detector are respectively placed on both sides of the standard test block. After the positions of the dual ultrasonic probes are calibrated, ultrasonic signals are obtained based on the dual ultrasonic probes.

[0024] According to some embodiments, a third solution of the present invention provides a computer-readable storage medium, which adopts the following technical solution:

[0025] A computer-readable storage medium stores a program, which, when executed by a processor, implements the steps of the sound velocity measurement method based on dual ultrasonic probes as described in the first solution of the present invention.

[0026] According to some embodiments, a fourth solution of the present invention provides an electronic device, which adopts the following technical solution:

[0027] An electronic device comprises a memory, a processor and a program stored in the memory and running on the processor. When the processor executes the program, the steps in the sound velocity measurement method based on dual ultrasonic probes as described in the first solution of the present invention are implemented.

[0028] According to some embodiments, a fifth solution of the present invention provides a computer program product, which adopts the following technical solution:

[0029] A computer program product includes software codes, wherein the program in the software codes executes the steps in the sound velocity measurement method based on dual ultrasonic probes as described in the first embodiment of the present invention.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] In view of the problem that the sound velocity of an ultrasonic probe is difficult to measure accurately, the present invention creatively proposes a sound velocity calculation method of an ultrasonic probe based on the principle of dual ultrasonic probes, which overcomes the measurement error caused by the sound field distortion of a single probe. The use of a dual ultrasonic probe with one transmit and one receive greatly reduces the measurement error and improves the accuracy of the ultrasonic probe in stress detection. The use of dual ultrasonic probes simplifies the measurement process, reduces the amount of data, and is more suitable for the application practice of existing work. It enriches the calculation method of the sound velocity of the ultrasonic probe and expands the idea of ​​measuring the sound velocity of the ultrasonic probe, which is conducive to promoting the innovation and upgrading of ultrasonic technology and facilitating the deep-field application of ultrasonic technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0033] Figure 1 This is a flow chart of a method for calculating the sound velocity based on dual ultrasonic probes in Embodiment 1 of the present invention;

[0034] Figure 2 Schematic diagram of the process of the sound velocity measurement method based on dual ultrasonic probes in the first embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the positions of the dual ultrasonic probes in the first embodiment of the present invention;

[0036] Figure 4 It is a structural block diagram of the sound velocity measurement system based on dual ultrasonic probes in the first embodiment of the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0041] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances, and they cannot be understood as limitations on the present invention.

[0042] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0043] Embodiment 1

[0044] Embodiment 1 of the present invention introduces a sound velocity measurement method based on dual ultrasonic probes.

[0045] like Figure 1 A sound velocity measurement method based on dual ultrasonic probes is shown, comprising:

[0046] Step S01: installing an ultrasonic bolt stress detector;

[0047] Step S02: Select a standard test block with a thickness of 50 mm;

[0048] Step S03: placing dual probes on both sides of the test block respectively;

[0049] Step S04: calibrate the probe position and obtain ultrasonic signals;

[0050] Step S05: Record the time when the primary wave corresponds to the sound;

[0051] Step S06: Record the secondary wave corresponding to the sound;

[0052] Step S07: Calculate the probe zero bias.

[0053] As one or more implementation modes, in step S101, an ultrasonic bolt stress detector is installed, a probe data cable is installed and connected, and a program is debugged.

[0054] As one or more implementation modes, in step S102, two standard test blocks with different materials and the same thickness are selected as a control test.

[0055] As one or more implementation modes, in step S103, a coupling agent is applied, and two probes are placed on two sides of a standard test block respectively.

[0056] As one or more implementation modes, in step S104, the probe is positioned according to the distance from the bottom and side of the probe to ensure that the probes on both sides are on the same horizontal line; at the same time, the detector gain value is adjusted to determine and unify the gain value while ensuring that each waveform is clear and readable.

[0057] As one or more implementation modes, in steps S105 and S106, the intersection value of the highest wave and the 50 wave height ratio baseline is selected for both the primary wave sound wave and the secondary wave sound wave.

[0058] As one or more implementation methods, in step S107, T2-T1=2(T1-T0), which can be simplified to Simplified Among them, T1 and T2 are the acoustic time of the primary wave and the secondary wave respectively; T0 corresponds to the zero bias of the ultrasonic stress detector; V0 is the sound velocity value of the ultrasonic probe under zero stress.

[0059] In the selected standard test block 1, the primary and secondary wave sound times of the bolt are 9.201μs and 26.105μs respectively. According to the formula, the probe zero bias can be calculated to be 0.749. At this time, the corresponding sound velocity value is 5915.3m / s, and the experimental temperature is 24℃.

[0060] In the selected standard test block 1, the primary and secondary wave sound times of the bolt are 9.195μs and 26.091μs respectively. According to the formula, the probe zero bias can be calculated to be 0.747. At this time, the corresponding sound velocity value is 5918.6m / s, and the experimental temperature is 22℃.

[0061] In the selected standard test block 2, the primary and secondary wave sound times of the bolt are 9.199μs and 26.099μs respectively. According to the formula, the probe zero bias can be calculated to be 0.749. At this time, the corresponding sound velocity value is 5917.2m / s, and the experimental temperature is 23℃.

[0062] In the selected standard test block 2, the primary and secondary wave sound times of the bolt are 9.195μs and 26.094μs respectively. According to the formula, the probe zero bias can be calculated to be 0.746. At this time, the corresponding sound velocity value is 5917.5m / s, and the experimental temperature is 22℃.

[0063] In view of the problem that the sound velocity of an ultrasonic probe is difficult to measure accurately, the present embodiment creatively proposes a sound velocity calculation method of an ultrasonic probe based on the principle of dual ultrasonic probes, which overcomes the measurement error caused by the sound field distortion of a single probe. The use of a dual ultrasonic probe with one transmit and one receive greatly reduces the measurement error and improves the accuracy of the ultrasonic probe in stress detection. The use of dual ultrasonic probes simplifies the measurement process, reduces the amount of data, and is more suitable for the application practice of existing work. It enriches the calculation method of the sound velocity of the ultrasonic probe and expands the idea of ​​measuring the sound velocity of the ultrasonic probe, which is conducive to promoting the innovation and upgrading of ultrasonic technology and facilitating the deep-field application of ultrasonic technology.

[0064] Embodiment 2

[0065] Embodiment 2 of the present invention introduces a sound velocity measurement system based on dual ultrasonic probes.

[0066] like Figure 4 A sound velocity measurement system based on dual ultrasonic probes is shown, comprising:

[0067] An acquisition module, configured to acquire ultrasonic signals from dual ultrasonic probes;

[0068] A calculation module, configured to calculate the primary wave acoustic time and the secondary wave acoustic time based on the acquired ultrasonic signal;

[0069] A calculation module, which is configured to calculate the zero bias of the ultrasonic bolt stress detector according to the obtained primary wave acoustic time and secondary wave acoustic time, and complete the sound velocity measurement based on the dual ultrasonic probes;

[0070] In the process of obtaining ultrasonic signals, an ultrasonic bolt stress detector is installed on the selected standard test block, and dual ultrasonic probes connected to the ultrasonic bolt stress detector are respectively placed on both sides of the standard test block. After the positions of the dual ultrasonic probes are calibrated, ultrasonic signals are obtained based on the dual ultrasonic probes.

[0071] The detailed steps are the same as the sound velocity measurement method based on dual ultrasonic probes provided in Example 1, and will not be repeated here.

[0072] Embodiment 3

[0073] Embodiment 3 of the present invention provides a computer-readable storage medium.

[0074] A computer-readable storage medium stores a program, which, when executed by a processor, implements the steps in the sound velocity measurement method based on dual ultrasonic probes as described in the first embodiment of the present invention.

[0075] The detailed steps are the same as the sound velocity measurement method based on dual ultrasonic probes provided in Example 1, and will not be repeated here.

[0076] Embodiment 4

[0077] A fourth embodiment of the present invention provides an electronic device.

[0078] An electronic device comprises a memory, a processor and a program stored in the memory and running on the processor, wherein when the processor executes the program, the steps in the sound velocity measurement method based on dual ultrasonic probes as described in the first embodiment of the present invention are implemented.

[0079] The detailed steps are the same as the sound velocity measurement method based on dual ultrasonic probes provided in Example 1, and will not be repeated here.

[0080] Embodiment 5

[0081] Embodiment 5 of the present invention provides a computer program product.

[0082] A computer program product includes software codes, wherein the program in the software codes executes the steps in the sound velocity measurement method based on dual ultrasonic probes as described in the first embodiment of the present invention.

[0083] The detailed steps are the same as the sound velocity measurement method based on dual ultrasonic probes provided in Example 1, and will not be repeated here.

[0084] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A sound velocity measurement method based on dual ultrasonic probes, characterized in that: include: Acquire ultrasonic signals of dual ultrasonic probes; Based on the acquired ultrasonic signal, the primary wave acoustic time and the secondary wave acoustic time are calculated; According to the obtained primary wave acoustic time and secondary wave acoustic time, the zero bias of the ultrasonic bolt stress detector is calculated to complete the sound velocity measurement based on the dual ultrasonic probes; In the process of obtaining ultrasonic signals, an ultrasonic bolt stress detector is installed on the selected standard test block, and dual ultrasonic probes connected to the ultrasonic bolt stress detector are respectively placed on both sides of the standard test block. After the positions of the dual ultrasonic probes are calibrated, ultrasonic signals are obtained based on the dual ultrasonic probes.

2. A sound velocity measurement method based on dual ultrasonic probes as described in claim 1, characterized in that: During the calibration of the dual ultrasonic probes, the dual ultrasonic probes are positioned according to their positions on the standard test block so that they are on the same horizontal line, and then the gain value of the ultrasonic bolt stress detector is adjusted to complete the calibration of the dual ultrasonic probes.

3. A sound velocity measurement method based on dual ultrasonic probes as described in claim 1, characterized in that: The probe of the ultrasonic stress detector transmits ultrasonic waves into the test block. According to the internal state of the test block, an ultrasonic signal graph with ups and downs is displayed on the screen of the ultrasonic stress detector, that is, the ultrasonic signal of the dual ultrasonic probe is obtained.

4. A method for calculating the sound velocity based on dual ultrasonic probes as claimed in claim 1, characterized in that: The primary wave speed and the secondary wave time are both selected as the intersection value of the highest wave and the 50 wave height ratio reference line.

5. A sound velocity measurement method based on dual ultrasonic probes as claimed in claim 1, characterized in that: The zero bias T0 of the ultrasonic bolt stress detector is Among them, T1 and T2 are the first wave sound time and the second wave sound time respectively.

6. A method for calculating the sound velocity based on dual ultrasonic probes as claimed in claim 5, characterized in that: The sound velocity value V0 of the ultrasonic probe under zero stress is 7. A sound velocity measurement system based on dual ultrasonic probes, characterized in that: include: An acquisition module, configured to acquire ultrasonic signals from dual ultrasonic probes; A calculation module, configured to calculate the primary wave acoustic time and the secondary wave acoustic time based on the acquired ultrasonic signal; A calculation module, which is configured to calculate the zero bias of the ultrasonic bolt stress detector according to the obtained primary wave acoustic time and secondary wave acoustic time, and complete the sound velocity measurement based on the dual ultrasonic probes; In the process of obtaining ultrasonic signals, an ultrasonic bolt stress detector is installed on the selected standard test block, and dual ultrasonic probes connected to the ultrasonic bolt stress detector are respectively placed on both sides of the standard test block. After the positions of the dual ultrasonic probes are calibrated, ultrasonic signals are obtained based on the dual ultrasonic probes.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the sound velocity measurement method based on dual ultrasonic probes as described in any one of claims 1 to 6 are implemented.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the program, the steps of the sound velocity measurement method based on dual ultrasonic probes as described in any one of claims 1 to 6 are implemented.

10. A computer program product comprising software code, characterized in that The program in the software code executes the steps of the sound velocity measurement method based on dual ultrasonic probes as described in any one of claims 1 to 6.

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