Method for designing receiving transducer of electromagnetic ultrasonic surface wave
A technology of electromagnetic ultrasonic and design method, applied in the direction of instrumentation, calculation, electrical digital data processing, etc., can solve the problems of complex processing, strong receiving noise, etc., and achieve the effect of simple operation and easy analysis
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specific Embodiment approach 1
[0020] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, the electromagnetic ultrasonic surface wave receiving transducer design method described in this embodiment, to realize the design method needs to model and solve the receiving process of the electromagnetic ultrasonic surface wave transducer, and carry out the electromagnetic ultrasonic surface wave receiving process Complete and accurate description, analyze the influence of different electromagnetic ultrasonic transducer parameters on the received signal strength, so as to obtain the optimal transducer parameter combination; the model mainly includes permanent magnet 1, electromagnetic ultrasonic surface wave transducer receiving coil 2 , the metal test piece 3 to be tested, the refinement layer 4 and the air far field 5; the receiving coil 2 of the electromagnetic ultrasonic surface wave transducer is a meander coil structure, which is formed by winding an enameled wire 2-1 on...
specific Embodiment approach 2
[0032] Specific implementation mode two: combination figure 1 and figure 2 This embodiment is described. In this embodiment, the thickness of the metal test piece 3 to be tested is greater than 4 times the wavelength of the ultrasonic surface wave and less than 10 times the wavelength of the ultrasonic surface wave. Other steps are the same as in the first embodiment.
specific Embodiment approach 3
[0033] Specific implementation mode three: combination figure 1 and figure 2 This embodiment is described. In this embodiment, in step 2, the certain lift-off distance is 0.1 mm to 2 mm. Other steps are the same as in the first embodiment.
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