Microphone and amplified audio system are used in conjunction with X-ray nondestructive testing to detect foreign particles inside moving hardware when particles cannot be located by X-ray alone.
Nondestructive interior examination of moving parts
NASA Tech Briefs ; 1 , 4
1977-03-01
Miscellaneous
No indication
English
Optical nondestructive examination for honeycomb structure
Tema Archive | 1992
|Application of nondestructive testing to automotive parts
Engineering Index Backfile | 1948
|