Detector and method based on electromagnetic ultrasonic oblique incidence body wave
An electromagnetic ultrasonic and detection device technology, which is applied in the direction of using sound waves/ultrasonic waves/infrasonic waves to analyze solids, can solve the problems of easy misjudgment, low detection efficiency, and limited to a certain range under the surface of the wheel tread, and achieve high precision and high speed. The effect of simple detection and structure
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Embodiment 1
[0027] Embodiment 1, combining figure 1 , figure 2 , the present invention is a detection device based on electromagnetic ultrasonic oblique incident body wave, it is made up of electromagnetic ultrasonic probe array (8) and electromagnetic ultrasonic flaw detector (3), and electromagnetic ultrasonic probe array (8) connects electromagnetic ultrasonic Flaw detector (3).
[0028] The present invention also has the following technical characteristics:
[0029] The electromagnetic ultrasonic flaw detector (3) includes a transmitting circuit (7), a receiving circuit (1), a data acquisition circuit (2), a microprocessor (4), a display unit (6) and a storage unit (5). The circuit (7) is connected to the microprocessor (4), the microprocessor (4) is connected to the data acquisition circuit (2), the display unit (6) and the storage unit (5), and the data acquisition circuit (2) is connected to the receiving circuit (1) .
[0030] The electromagnetic ultrasonic probe array (8) in...
Embodiment 2
[0041] Example 2, combined with figure 2 , image 3 , a detection device and method based on electromagnetic ultrasonic oblique incident body waves of the present invention, each group of the ultrasonic detection probes is composed of an ultrasonic probe A with an integrated function of sending and receiving and an ultrasonic probe B with a receiving function, and has the function of sending and receiving two Function. The working process of the detection device is as follows: the microprocessor (4) sends a control signal to the transmitting circuit (7), and the transmitting circuit (7) drives the ultrasonic probe A to emit an oblique incident body wave. The oblique incident body wave propagates in the wheel rim, The propagation speed is about 3000m / s. When a defect is encountered, part of the energy will be emitted, and the rest of the energy will continue to propagate, and will be reflected when it encounters an end surface. Ultrasonic probe A receives the reflected echo of...
Embodiment 3
[0042] Embodiment 3, combining figure 2 , image 3 , Figure 4 , Figure 5 , a detection device and method based on electromagnetic ultrasonic oblique incident body waves, in the on-line detection device for wheel tire defects, each group of ultrasonic probes is composed of two ultrasonic probes—ultrasonic probe A and ultrasonic probe B, wherein the ultrasonic probe A is used for both transmitting and receiving, and ultrasonic probe B is used for receiving. Before the detection, the ultrasonic probes A and B are first embedded in the rail, and used to detect the non-defective wheels, and the ultrasonic amplitude received by the ultrasonic probe B is recorded at this time. In actual detection, such as Figure 4 As shown, when there is a defect inside the wheel tire, the ultrasonic wave will be reflected when it encounters the defect, and the ultrasonic probe A will receive the reflected echo signal, and at the same time, due to the reflection of part of the ultrasonic ener...
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