An application of critically refracted longitudinal ultrasonic subsurface waves (L_(CR)) to industrial nondestructive testing of thin walled pipe shaped elements of shock absorbers,axle shafts and transmission shafts

摘要

The paper describes the application of critically refracted longitudinal ultrasonic subsurface waves (L_(CR), known also as lateral, creeping or head waves) to nondestructive flaw detection in friction welding or MAIB welded thin walled pipe shaped parts. The theory, a practical laboratory and industrial applications are presented.