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Electromagnetic acoustic transducer (EMAT) inspection of tubes for surface defects
Electromagnetic acoustic transducer (EMAT) inspection of tubes for surface defects
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机译:电磁声换能器(EMAT)检查管表面是否有缺陷
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摘要
An EMAT testing device for nondestructively testing tubes for surface defects and displaying the results has a EMAT transmitter arranged collinear with a pair of EMAT receivers. The EMAT receivers each receive a pair of oppositely propagating circumferential acoustic surface waves from the transmitter at different times and the relative amplitudes of the received waves are compared to located defects adjacent the receivers in the tube.
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