Defect detecting method for weak joint of diffusion welding joint interface
A connection interface and defect detection technology, which is applied in the direction of using sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc., can solve problems such as unreliable weak joint defect detection methods, difficulty in distinguishing, and mixed reflected waves
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[0025] The present invention will be described in more detail below with examples in conjunction with the accompanying drawings.
[0026] combine figure 1 , the specific implementation steps of the present invention are as follows:
[0027] (1) combination figure 2 , the ultrasonic transducer 1 is used to vertically incident the ultrasonic wave from the top of the diffusion welding sample 2 to the diffusion welding sample 2, and the ultrasonic transducer 1 is used to receive the ultrasonic reflected wave, expressed as N is the number of sampling points. The received ultrasonic reflected wave includes both the reflected wave on the upper surface of the diffusion welding sample 2 and the reflected wave at the connection interface of the diffusion welding sample 2.
[0028] (2) Using the window function d(n) to receive the ultrasonic reflected wave Perform truncation processing to intercept the reflected wave of the connection interface of diffusion welding sample 2, expre...
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