Probe of electromagnetic ultrasonic transverse wave transducer and control method and device thereof

Abstract

The application discloses a probe of an electromagnetic ultrasonic transverse wave transducer and a control method and device thereof. The probe comprises a plurality of permanent magnets and a plurality of array element coils. The plurality of permanent magnets are arranged on the upper layer of the plurality of array element coils. The distance from the two ends of each array element coil in the plurality of array element coils to the surface of the wheel to be detected is the same. The length of each array element coil in the plurality of array element coils is different. According to the alternating current, the plurality of array element coils form ultrasonic transverse waves propagating downward in the inside of the wheel to be detected in the bias magnetic field generated by the plurality of permanent magnets. Through the application, the problem that the electromagnetic ultrasonic transverse wave transducer cannot effectively identify the defects in the inside of the wheel metal in the related art is solved.

Description

Technical Field

[0001] This application relates to the field of nondestructive testing research, and more specifically, to a probe for an electromagnetic ultrasonic transverse wave transducer and its control method and apparatus. Background Technology

[0002] With the continuous development of computer technology and electromagnetic ultrasonic technology, electromagnetic ultrasonic testing plays a key role in the safety of testing equipment. At the same time, ultrasonic testing is widely used in important fields such as aerospace testing and energy testing.

[0003] Conventional piezoelectric ultrasonic testing technology has many limitations regarding the objects being tested. For example, the testing process requires a liquid coupling agent and is unsuitable for extreme environments such as high temperatures, radiation, and strong corrosion. Currently, piezoelectric ultrasonic testing is generally used to detect internal defects in wheel metal, but this technology requires a coupling agent, which affects the testing process to some extent. Secondly, the ultrasonic waves generated by piezoelectric ultrasonic testing are generally longitudinal waves with high attenuation, making it difficult to obtain accurate test results in complex environments. Although electromagnetic ultrasonic testing technology does not require a coupling agent during the testing process, existing electromagnetic ultrasonic transverse wave transducers have low transduction efficiency, resulting in weak defect echo signals. Currently, there is no good method for detecting internal defects in wheels.

[0004] There is currently no effective solution to the problem that electromagnetic ultrasonic transverse wave transducers cannot effectively identify defects inside the metal of wheels in related technologies. Summary of the Invention

[0005] The main objective of this application is to provide a probe for an electromagnetic ultrasonic transverse wave transducer and its control method and device, so as to solve the problem that electromagnetic ultrasonic transverse wave transducers cannot effectively identify defects inside the metal of wheels in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, a probe for an electromagnetic ultrasonic transverse wave transducer is provided, comprising: a plurality of permanent magnets; a plurality of array element coils; wherein the plurality of permanent magnets are disposed on the upper layer of the plurality of array element coils, the two ends of each array element coil are at the same distance from the surface of the wheel to be tested, the length of each array element coil is different, and the plurality of array element coils form an ultrasonic transverse wave propagating downward inside the wheel to be tested in a bias magnetic field generated by the plurality of permanent magnets according to an alternating current.

[0007] Furthermore, the probe also includes: each of the plurality of permanent magnets is arranged in the upper space of the plurality of array element coils according to the curvature of the wheel to be tested.

[0008] Furthermore, the probe also includes a length-to-height ratio of 1:2 for each of the plurality of permanent magnets.

[0009] Furthermore, the probe also includes: the magnetic poles of any two adjacent permanent magnets among the plurality of permanent magnets are opposite.

[0010] Furthermore, the probe also includes: each of the plurality of array element coils is an array element coil that integrates receiving current signals and transmitting current signals.

[0011] According to one aspect of the present invention, an electromagnetic ultrasonic transverse wave transducer is provided, wherein the electromagnetic ultrasonic transverse wave transducer is provided with a probe as described in any one of the above embodiments.

[0012] According to one aspect of the present invention, a probe for an electromagnetic ultrasonic transverse wave transducer is provided, and a control method for the probe of the electromagnetic ultrasonic transverse wave transducer is also provided. The control method is applied to control the probe of the electromagnetic ultrasonic transverse wave transducer, comprising: generating a bias magnetic field using multiple permanent magnets; controlling the timing of transmitting high-frequency pulse current signals to multiple array element coils using a delayed phased array to form an ultrasonic transverse wave propagating downward inside a wheel to be tested; receiving a target signal through the multiple array element coils, wherein the target signal is a signal returned after the ultrasonic transverse wave contacts a metal defect inside the wheel to be tested; and processing the target signal to identify the metal defect inside the wheel to be tested.

[0013] Furthermore, using a delayed phased array to control the timing of transmitting high-frequency pulse current signals to the plurality of array element coils to form an ultrasonic transverse wave propagating downward inside the wheel under test includes: transmitting high-frequency pulse current signals to the plurality of array element coils according to the length order of each array element coil from shortest to longest, so that all array element coils in the plurality of array element coils generate the ultrasonic transverse wave at the same time.

[0014] Furthermore, before receiving the target signal through the plurality of array element coils, the method further includes: after the ultrasonic transverse wave contacts a defect inside the metal of the wheel to be tested, reflecting the ultrasonic transverse wave onto the surface of the wheel to be tested; when the ultrasonic transverse wave is received on the surface of the wheel to be tested, particle vibration is generated, and the particle vibration generated on the surface of the wheel to be tested causes the plurality of array element coils in the bias magnetic field to generate a target current; and the target signal is generated based on the target current.

[0015] According to another aspect of the present invention, a control device for a probe of an electromagnetic ultrasonic transverse wave transducer is also provided. The control device is used to control the probe of the electromagnetic ultrasonic transverse wave transducer and includes: a first generating unit for generating a bias magnetic field using multiple permanent magnets; a forming unit for controlling the timing of transmitting high-frequency pulse current signals to multiple array element coils using a delayed phased array to form an ultrasonic transverse wave propagating downward inside the wheel to be tested; a receiving unit for receiving a target signal through the multiple array element coils, wherein the target signal is a signal returned after the ultrasonic transverse wave contacts a metal defect inside the wheel to be tested; and a processing unit for processing the target signal to identify the metal defect inside the wheel to be tested.

[0016] Furthermore, the forming unit includes a transmission subunit, used to transmit high-frequency pulse current signals to the plurality of array element coils according to the length order of each array element coil from shortest to longest, so that all array element coils in the plurality of array element coils generate the ultrasonic transverse wave at the same time.

[0017] Furthermore, the device further includes: a reflection unit, used to reflect the ultrasonic transverse wave to the surface of the wheel to be tested after the ultrasonic transverse wave comes into contact with a defect inside the metal of the wheel to be tested, before receiving the target signal through the plurality of array element coils; a second generation unit, used to generate particle vibration when the ultrasonic transverse wave is received on the surface of the wheel to be tested, and the particle vibration generated on the surface of the wheel to be tested causes the plurality of array element coils in the bias magnetic field to generate a target current; and a third generation unit, used to generate the target signal based on the target current.

[0018] The probe of the electromagnetic ultrasonic transverse wave transducer provided in this application has the following structure: multiple permanent magnets; multiple array element coils; wherein, the multiple permanent magnets are disposed on the upper layer of the multiple array element coils, the two ends of each array element coil are equidistant from the surface of the wheel to be tested, and the length of each array element coil is different. Based on alternating current, the multiple array element coils generate an ultrasonic transverse wave propagating downwards inside the wheel to be tested within a bias magnetic field generated by the multiple permanent magnets, thus solving the problem that electromagnetic ultrasonic transverse wave transducers in related technologies cannot effectively identify defects inside the wheel metal. By setting the placement position of the array element coils, after providing alternating current to the array element coils in the bias magnetic field, the array element coils generate ultrasonic transverse waves propagating downwards inside the wheel metal to be tested. This allows the generated ultrasonic transverse waves to be focused on the location of metal defects, thereby achieving a more accurate detection result for defects inside the wheel metal. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of a probe for an electromagnetic ultrasonic transverse wave transducer according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of an optional ultrasonic longitudinal wave excitation and propagation according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of an optional ultrasonic transverse wave excitation and propagation according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of an optional electromagnetic ultrasonic shear wave focusing effect on a wheel according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the static magnetic field strength and distribution of a permanent magnet with an optional length-to-height ratio of 1:1 according to an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the static magnetic field strength and distribution of a permanent magnet with an optional length-to-height ratio of 1:1.5 according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the static magnetic field strength and distribution of a permanent magnet with an optional length-to-height ratio of 1:2 according to an embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the static magnetic field strength and distribution of a permanent magnet with an optional length-to-height ratio of 1:2.5 according to an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of one optional arrangement of three permanent magnets according to an embodiment of the present invention;

[0029] Figure 10 This is a flowchart of an optional control method for a probe of an electromagnetic ultrasonic transverse wave transducer according to an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the displacement of the detection point before and after electromagnetic ultrasonic shear wave focusing according to an embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of an optional method of changing the focusing position of electromagnetic ultrasonic shear waves by means of a time-delayed phased array according to an embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of a control device for an optional electromagnetic ultrasonic transverse wave transducer probe according to an embodiment of the present invention. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] The present invention will now be described in conjunction with preferred implementation steps. Figure 1 This is a schematic diagram of the probe of the electromagnetic ultrasonic shear wave transducer provided according to an embodiment of this application, as shown below. Figure 1 As shown, the probe includes:

[0037] Multiple permanent magnets; multiple array element coils; wherein, the multiple permanent magnets are arranged on the upper layer of the multiple array element coils, the two ends of each array element coil are at the same distance from the surface of the wheel to be tested, the length of each array element coil is different, and the multiple array element coils form an ultrasonic transverse wave that propagates downward inside the wheel to be tested in the bias magnetic field generated by the multiple permanent magnets according to the alternating current.

[0038] In this application, a permanent magnet is used to provide a bias magnetic field, which effectively reduces interference to the phased array and provides a stronger and more stable magnetic field. Furthermore, it eliminates the need for a long-pulse current source, reducing the size and workload of the detection equipment. By energizing the array element coils within the bias magnetic field with alternating current, ultrasonic waves are excited, enabling the detection of internal defects in the metal of the wheel under test. In this embodiment, instead of placing all the array element coils on the same plane, the coils are positioned closer to the wheel under test. This ensures that the array element coils do not contact the wheel, while covering the surface of the wheel as much as possible, thus focusing the generated ultrasonic transverse waves onto the metal defects.

[0039] Optionally, the probe of the aforementioned electromagnetic ultrasonic transverse wave transducer further includes: each of the multiple permanent magnets is arranged in the upper space of the multiple array element coils according to the curvature of the wheel to be tested.

[0040] In this embodiment, multiple permanent magnets are placed above the coil to provide downward-propagating ultrasonic transverse waves, such as... Figure 2 As shown ( Figure 2 In the diagram, B represents the bias magnetic field; J represents the direction of the current; and F represents the direction of particle motion (i.e., the direction of sound wave propagation). The propagation direction of longitudinal waves is the same as the vibration direction, while the propagation direction of transverse waves is perpendicular to the vibration direction. Figure 3 As shown, under the same power supply, the propagation speed of transverse waves is usually about half that of longitudinal waves, and the wavelength of transverse waves is about half that of longitudinal waves. Therefore, the attenuation of transverse waves is less than that of longitudinal waves. That is, under the same conditions, the detection sensitivity of transverse waves is higher, and the detection effect obtained by exciting ultrasonic transverse waves with electromagnetic ultrasonic transducers is more accurate.

[0041] Simultaneously, by placing multiple permanent magnets in an arc shape above multiple array element coils to provide downward-propagating ultrasonic shear waves, it is possible to detect internal metal defects in wheels using ultrasonic shear waves with lower attenuation. Figure 4 As shown, multiple ultrasonic transverse waves are focused at a single point, enhancing the signal intensity and achieving the effect of more accurately detecting metal defects inside the wheel.

[0042] Optionally, the probe of the above-mentioned electromagnetic ultrasonic transverse wave transducer further includes: the length-to-height ratio of each of the multiple permanent magnets is 1:2.

[0043] Figure 5 , Figure 6 , Figure 7 and Figure 8 The diagrams show the static magnetic field strength and distribution of four types of permanent magnets with length-to-height ratios of 1:1, 1:1.5, 1:2, and 1:2.5, respectively. Table 1 shows the magnetic field strength distribution of the four types of permanent magnets with length-to-height ratios of 1:1, 1:1.5, 1:2, and 1:2.5, as detailed below.

[0044]

[0045] Table 1. Magnetic field intensity distribution of four types of permanent magnets with length-to-height ratios ranging from 1:1 to 1:2.5.

[0046] Depend on Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown in Table 1, when the length-to-height ratio of the permanent magnet is 1:2, the magnetic flux density on the surface of the object to be tested is relatively large and the distribution is relatively uniform.

[0047] The formula for calculating the transduction efficiency of an electromagnetic ultrasonic transducer is shown below.

[0048]

[0049] Where P represents the acoustic power generated per unit area in the workpiece, Q represents the electromagnetic power per unit area, π represents pi, B0 represents the static magnetic field strength, ρ represents the density of the object, c represents the speed of sound propagation in the object, ω represents the angular frequency of the alternating magnetic field, and δ represents the depth of induced eddy currents in the workpiece. The formula for calculating β is shown below.

[0050]

[0051] Where π represents pi, λ represents the permeability of vacuum, μ represents the permeability of vacuum, μ0 represents the permeability of vacuum, σ represents the conductivity, and ω represents the angular frequency of the alternating magnetic field. From the above formulas, the transduction efficiency and static magnetic field strength B0 of the electromagnetic ultrasonic transducer can be derived. 2 Proportional. As can be seen from the above analysis, by setting the length-to-height ratio of the permanent magnet to 1:2, the magnetic flux density on the surface of the object to be tested is greater, and the static magnetic field strength provided by the permanent magnet is also stronger, thereby improving the conversion efficiency of the electromagnetic ultrasonic transducer and thus achieving a more accurate detection result.

[0052] Optionally, the probe of the aforementioned electromagnetic ultrasonic transverse wave transducer further includes: the magnetic poles of two adjacent permanent magnets among a plurality of permanent magnets are opposite.

[0053]

[0054] Table 2 Magnetic field strength under three different permanent magnet arrangements

[0055] Figure 9 This diagram illustrates three different arrangements of permanent magnets: a single magnet, magnets of the same polarity arranged side by side, and magnets of opposite polarities arranged side by side. Table 2 shows the magnetic field strength under these three arrangements. Figure 9As shown in Table 2, under the same total volume, the peak magnetic field strength generated on the specimen surface by a magnet group with opposite polarities arranged side by side is about 60% higher than that generated by a single magnet or a magnet group with the same polarities arranged side by side. By arranging permanent magnets with opposite magnetic poles of adjacent magnets, the magnetic field strength provided by the permanent magnets is made greater, thus improving the accuracy of the detection.

[0056] Optionally, the probe of the above-mentioned electromagnetic ultrasonic transverse wave transducer further includes: each of the multiple array element coils is an array element coil that integrates receiving current signals and transmitting current signals.

[0057] In this embodiment, by using an array element coil that integrates receiving and transmitting current signals, the number of components and operations are simplified, less space is occupied, and signal interference caused by electromagnetic induction between the two sets of coils is reduced, thereby improving the detection accuracy.

[0058] According to an embodiment of the present invention, an embodiment of a method for controlling the probe of an optional electromagnetic ultrasonic shear wave transducer is provided, the control method being applied to controlling the probe of the aforementioned electromagnetic ultrasonic shear wave transducer.

[0059] Figure 10 This is a schematic diagram of an optional control method for a probe of an electromagnetic ultrasonic shear wave transducer according to an embodiment of the present invention. Figure 1 ,like Figure 10 As shown, the method includes the following steps:

[0060] Step S1001: A bias magnetic field is generated using multiple permanent magnets.

[0061] By placing multiple permanent magnets in the above scheme instead of using excitation coils to generate a bias magnetic field in the existing technology, a stronger bias magnetic field is generated, thereby improving the accuracy of detection.

[0062] Step S1002: The timing of transmitting high-frequency pulse current signals to multiple array element coils is controlled by a delayed phased array, forming an ultrasonic transverse wave that propagates downward inside the wheel to be tested.

[0063] In this embodiment, by using a delayed phased array to control the energizing timing of the alternating current, the multiple array element coils placed in the bias magnetic field are supplied with alternating current. This allows the generated downward-propagating ultrasonic transverse waves to be focused on a specific point on the wheel to be tested, which is beneficial for obtaining better detection results.

[0064] Step S1003: Receive the target signal through multiple array element coils. The target signal is the signal returned after the ultrasonic shear wave contacts the metal defect inside the wheel to be tested.

[0065] In this embodiment of the application, when the downward-propagating ultrasonic transverse wave comes into contact with a metal defect inside the wheel to be tested, it will return a target signal for subsequent identification of the defect in the wheel to be tested.

[0066] Step S1004: Process the target signal to identify metal defects inside the wheel to be inspected.

[0067] The target signal returned by the above scheme is converted into induced current in multiple array element coils. Then, the induced current is transmitted to computer software for further processing and analysis to identify metal defects inside the wheel to be inspected.

[0068] The above steps, by setting the placement position of the array element coils and using a delayed phased array to control the energizing timing of the AC power, provide AC power to the array element coils in the bias magnetic field, causing the array element coils to generate ultrasonic transverse waves that propagate downward inside the metal of the wheel to be tested. This enables the generated ultrasonic transverse waves to be focused on a specific location of the wheel to be tested, thereby achieving the goal of making the detection results of defects inside the wheel metal more accurate.

[0069] Optionally, using a delayed phased array to control the timing of transmitting high-frequency pulse current signals to multiple array element coils to form an ultrasonic transverse wave propagating downward inside the wheel under test includes: transmitting high-frequency pulse current signals to multiple array element coils according to the length order of each array element coil from shortest to longest, so that all array element coils in the multiple array element coils generate ultrasonic transverse waves at the same time.

[0070] In this embodiment, multiple array element coils are arranged in a racetrack shape, and the multiple array element coils are not in the same horizontal plane. If the timing of the current being turned on in each coil is not controlled, all coils will emit downward ultrasonic transverse waves at the same time. The time when these ultrasonic waves reach a certain point in the wheel to be tested is different, resulting in multiple peak values ​​in the echo signal. However, the value of the peak point is low, so the detection result is inaccurate.

[0071] In this embodiment, as Figure 11 As shown, by setting different coil delay currents, the effect of focusing the signal can be achieved. Figure 11 The data corresponding to the second peak indicates that the highest displacement of the detection point before focusing is 12 × 10⁻⁶. - 9 mm, the maximum displacement of the detection point after focusing is 20×10 mm. -9 The echo signal peak value increased by 66%, and the signal strength was improved by 66%. By controlling the timing of the AC power supply to transmit high-frequency pulse current signals to multiple array element coils using a delayed phased array, the received signal can be focused, and the peak value of the detection signal is improved, which is beneficial for obtaining more accurate detection results.

[0072] By using a time-delayed phased array to control the timing of the AC power supply transmitting high-frequency pulse current signals to multiple array element coils, and without moving the detection equipment, the ultrasonic focusing point can be set at different positions inside the wheel to be inspected. The detection results after changing the focusing position are as follows: Figure 12 As shown, the ultrasonic transverse waves generated by multiple array element coils can be focused on a point inside the wheel to be inspected, thereby enhancing the peak value of the echo signal. Through the above scheme, not only is the workload reduced, but the inspection efficiency is also improved.

[0073] Optionally, before receiving the target signal through multiple array element coils, the method further includes: reflecting the ultrasonic transverse wave to the surface of the wheel after it comes into contact with a defect inside the metal of the wheel to be tested; generating particle vibration when the ultrasonic transverse wave is received on the surface of the wheel to be tested, and causing the particle vibration generated on the surface of the wheel to be tested to generate a target current in multiple array element coils in a bias magnetic field; and generating a target signal based on the target current.

[0074] In this embodiment, after the ultrasonic shear wave generated by the array element coils contacts the internal defects of the metal of the wheel to be inspected, the ultrasonic shear wave is reflected back to the surface of the wheel, causing particle vibration on the surface. Because the surface of the wheel is in a bias magnetic field, the particle vibration induces current in multiple array element coils. The induced current data is then transmitted to computer software for processing and analysis, thus obtaining the result of identifying internal defects in the metal of the wheel. By using ultrasonic shear waves to detect internal defects in the metal of the wheel, the attenuation of the sound wave is reduced, and the peak value of the echo signal is increased, achieving a more accurate detection result.

[0075] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0076] This application also provides a control device for the probe of an electromagnetic ultrasonic shear wave transducer. It should be noted that the control device for the probe of the electromagnetic ultrasonic shear wave transducer in this application can be used to execute the control method for the probe of the electromagnetic ultrasonic shear wave transducer provided in this application. The batch data conversion device provided in this application is described below.

[0077] Figure 13 This is a schematic diagram of a batch data conversion apparatus according to an embodiment of this application. Figure 13 As shown, the device includes: a first generating unit 1301, a forming unit 1302, a receiving unit 1303, and a processing unit 1304.

[0078] The first generating unit 1301 is used to generate a bias magnetic field using multiple permanent magnets.

[0079] The forming unit 1302 is used to control the timing of transmitting high-frequency pulse current signals to multiple array element coils using a delayed phased array, thereby forming an ultrasonic transverse wave that propagates downward inside the wheel to be tested.

[0080] The receiving unit 1303 is used to receive a target signal through multiple array element coils, wherein the target signal is the signal returned after the ultrasonic shear wave contacts the metal defect inside the wheel to be tested.

[0081] The processing unit 1304 is used to process the target signal to identify metal defects inside the wheel to be inspected.

[0082] In the control device for the probe of an electromagnetic ultrasonic transverse wave transducer provided in this application embodiment, a bias magnetic field is generated by multiple permanent magnets through a first generating unit 1301; a forming unit 1302 uses a delayed phased array to control the timing of transmitting high-frequency pulse current signals to multiple array element coils, forming an ultrasonic transverse wave propagating downward inside the wheel to be tested; a receiving unit 1303 receives a target signal through multiple array element coils, wherein the target signal is the signal returned after the ultrasonic transverse wave contacts a metal defect inside the wheel to be tested; and a processing unit 1304 processes the target signal to identify the metal defect inside the wheel to be tested, solving the problem in related technologies that electromagnetic ultrasonic transverse wave transducers cannot effectively identify defects inside the metal of wheels. By setting the placement position of the array element coils, after providing alternating current to the array element coils in the bias magnetic field, the array element coils generate an ultrasonic transverse wave propagating downward inside the metal of the wheel to be tested, enabling the generated ultrasonic transverse wave to be focused on the location of the metal defect, thereby achieving the purpose of more accurate detection results of defects inside the wheel metal.

[0083] Optionally, in the control device for the probe of an electromagnetic ultrasonic transverse wave transducer provided in this application embodiment, the forming unit 1302 includes: a transmission subunit, used to transmit high-frequency pulse current signals to multiple array element coils according to the length order of each array element coil from shortest to longest, so that all array element coils in the multiple array element coils generate ultrasonic transverse waves at the same time.

[0084] Optionally, in the control device for the probe of an electromagnetic ultrasonic transverse wave transducer provided in this application embodiment, the device further includes: a reflection unit, used to reflect the ultrasonic transverse wave to the surface of the wheel to be tested after the ultrasonic transverse wave comes into contact with the defects inside the metal of the wheel to be tested before receiving the target signal through multiple array element coils; a second generation unit, used to generate particle vibration when the ultrasonic transverse wave is received on the surface of the wheel to be tested, and to cause the multiple array element coils in the bias magnetic field to generate a target current through the particle vibration generated on the surface of the wheel to be tested; and a third generation unit, used to generate a target signal based on the target current.

[0085] The control device for the probe of the electromagnetic ultrasonic transverse wave transducer includes a processor and a memory. The first generating unit 1301, the forming unit 1302, the receiving unit 1303, the processing unit 1304, etc. are all stored in the memory as program units. The processor executes the program units stored in the memory to realize the corresponding functions.

[0086] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured. By adjusting the kernel parameters, a probe and its control method / device for an electromagnetic ultrasonic shear wave transducer can be provided to solve the problem in related technologies where electromagnetic ultrasonic shear wave transducers cannot effectively identify internal defects in wheel metal.

[0087] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0088] This invention provides a computer-readable storage medium storing a program thereon, which, when executed by a processor, implements a method for controlling the probe of the electromagnetic ultrasonic transverse wave transducer.

[0089] This invention provides a processor for running a program, wherein the program executes a control method for a probe of an electromagnetic ultrasonic transverse wave transducer.

[0090] This invention provides an electronic device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs the following steps: generating a bias magnetic field using multiple permanent magnets; controlling the timing of transmitting high-frequency pulse current signals to multiple array element coils using a delayed phased array to form an ultrasonic transverse wave propagating downward inside the wheel to be tested; receiving a target signal through the multiple array element coils, wherein the target signal is the signal returned after the ultrasonic transverse wave contacts a metal defect inside the wheel to be tested; and processing the target signal to identify the metal defect inside the wheel to be tested.

[0091] The processor also performs the following steps when executing the program: using a delayed phased array to control the timing of transmitting high-frequency pulse current signals to multiple array element coils to form an ultrasonic transverse wave propagating downward inside the wheel under test, including: transmitting high-frequency pulse current signals to multiple array element coils according to the length order of each array element coil from shortest to longest, so that all array element coils in the multiple array element coils generate ultrasonic transverse waves at the same time.

[0092] The processor also performs the following steps when executing the program: Before receiving the target signal through multiple array element coils, the above method further includes: after the ultrasonic transverse wave comes into contact with the defect inside the metal of the wheel to be tested, the ultrasonic transverse wave is reflected to the surface of the wheel to be tested; when the ultrasonic transverse wave is received on the surface of the wheel to be tested, particle vibration is generated, and the particle vibration generated on the surface of the wheel to be tested causes multiple array element coils in the bias magnetic field to generate a target current; and a target signal is generated based on the target current.

[0093] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having the following method steps: generating a bias magnetic field using multiple permanent magnets; using a delayed phased array to control the timing of transmitting high-frequency pulse current signals to multiple array element coils to form an ultrasonic transverse wave propagating downward inside the wheel to be tested; receiving a target signal through the multiple array element coils, wherein the target signal is a signal returned after the ultrasonic transverse wave contacts a metal defect inside the wheel to be tested; and processing the target signal to identify the metal defect inside the wheel to be tested.

[0094] When executed on a data processing device, it is also suitable to execute an initialization program with the following method steps: using a delayed phased array to control the timing of transmitting high-frequency pulse current signals to multiple array element coils to form an ultrasonic transverse wave propagating downward inside the wheel to be tested, including: transmitting high-frequency pulse current signals to multiple array element coils according to the length order of each array element coil from shortest to longest, so that all array element coils in the multiple array element coils generate ultrasonic transverse waves at the same time.

[0095] When executed on a data processing device, it is also suitable to execute an initialization procedure with the following steps: before receiving a target signal through multiple array element coils, the above method further includes: after the ultrasonic transverse wave contacts a defect inside the metal of the wheel to be tested, reflecting the ultrasonic transverse wave onto the surface of the wheel to be tested; when the ultrasonic transverse wave is received on the surface of the wheel to be tested, particle vibration is generated, and the particle vibration generated on the surface of the wheel to be tested causes a target current to be generated in multiple array element coils in a bias magnetic field; and a target signal is generated based on the target current.

[0096] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0097] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0098] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0099] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0100] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0101] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0102] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0103] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0104] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0105] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A control method for a probe of an electromagnetic ultrasonic shear wave transducer, characterized in that, The control method employs an electromagnetic ultrasonic transverse wave transducer equipped with a probe comprising: multiple permanent magnets; and multiple array element coils. The multiple permanent magnets are positioned above the multiple array element coils. The two ends of each array element coil are equidistant from the surface of the wheel under test. Each array element coil has a different length. Based on an alternating current, the multiple array element coils generate an ultrasonic transverse wave propagating downwards inside the wheel under test within a bias magnetic field produced by the multiple permanent magnets. The length-to-height ratio of each permanent magnet is 1:

2. The control method includes: Multiple permanent magnets are used to generate a bias magnetic field; The timing of transmitting high-frequency pulse current signals to multiple array element coils is controlled by a time-delayed phased array, forming an ultrasonic transverse wave that propagates downward inside the wheel under test. The target signal is received by the multiple array element coils, wherein the target signal is the signal returned after the ultrasonic shear wave comes into contact with the metal defect inside the wheel to be tested; The target signal is processed to identify metal defects inside the wheel to be inspected; The method further includes transmitting a high-frequency pulse current signal to the plurality of array element coils according to the length order of each array element coil from shortest to longest, so that all array element coils in the plurality of array element coils generate the ultrasonic transverse wave at the same time.

2. The control method for the probe of an electromagnetic ultrasonic shear wave transducer according to claim 1, characterized in that, Each of the plurality of permanent magnets is arranged in the upper space of the plurality of array element coils according to the curvature of the wheel to be tested.

3. The control method for the probe of an electromagnetic ultrasonic shear wave transducer according to claim 1, characterized in that, The magnetic poles of any two adjacent permanent magnets among the plurality of permanent magnets are opposite.

4. The control method for the probe of an electromagnetic ultrasonic shear wave transducer according to claim 1, characterized in that, Each of the multiple array element coils is an array element coil that integrates receiving and transmitting current signals.

5. The control method for the probe of an electromagnetic ultrasonic shear wave transducer according to claim 1, characterized in that, Before receiving the target signal through the plurality of array element coils, the method further includes: After the ultrasonic transverse wave comes into contact with a defect inside the metal of the wheel to be tested, the ultrasonic transverse wave is reflected back onto the surface of the wheel to be tested. When the ultrasonic transverse wave is received on the surface of the wheel to be tested, particle vibration is generated. The particle vibration generated on the surface of the wheel to be tested causes the multiple array element coils in the bias magnetic field to generate a target current. The target signal is generated based on the target current.

6. A control device for a probe of an electromagnetic ultrasonic shear wave transducer, characterized in that, The control device is applied to an electromagnetic ultrasonic transverse wave transducer, which is equipped with a probe. The probe includes: multiple permanent magnets; multiple array element coils; wherein, the multiple permanent magnets are disposed on the upper layer of the multiple array element coils, the two ends of each array element coil are equidistant from the surface of the wheel to be tested, and the length of each array element coil is different. Based on an alternating current, the multiple array element coils form an ultrasonic transverse wave propagating downwards inside the wheel to be tested within a bias magnetic field generated by the multiple permanent magnets. The length-to-height ratio of each permanent magnet is 1:

2. The control device includes: The first generating unit is used to generate a bias magnetic field using multiple permanent magnets; The forming unit is used to control the timing of transmitting high-frequency pulse current signals to multiple array element coils using a delayed phased array, thereby forming an ultrasonic transverse wave that propagates downward inside the wheel under test. A receiving unit is configured to receive a target signal through the plurality of array element coils, wherein the target signal is the signal returned after the ultrasonic shear wave contacts a metal defect inside the wheel to be tested; The processing unit is used to process the target signal to identify metal defects inside the wheel to be detected; The second generating unit is used to transmit high-frequency pulse current signals to the plurality of array element coils according to the length order of each array element coil from shortest to longest, so that all the array element coils in the plurality of array element coils generate the ultrasonic transverse wave at the same time.

Images