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Method and device for non-destructive testing of defects in the structure of articles with Rayleigh-waves
Method and device for non-destructive testing of defects in the structure of articles with Rayleigh-waves
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机译：用瑞利波无损检测物品结构缺陷的方法和装置
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摘要
The method involves using ultrasound to generate Rayleigh waves, which are transmitted at an angle to the object surface and measuring the amplitudes of the resulting ultrasound waves. At least one ultrasound transmitter (12) and one ultrasound detector (14), which are placed with the object in a water (26) bath to couple the ultrasound waves, and which are spaced apart by one or more wavelengths of the ultrasound from the object surface. The object is moved with respect to the ultrasound transmitter and detector and ultrasound is transmitted. The amplitude of the ultrasound detected by the detector is compared with amplitude values obtained by transmitting Rayleigh waves and corresponding to sections having defects at or near the surface, to determine deviations caused by defects. An Independent claim is included for a device for implementing the method.
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