Metal aircraft skins scanned rapidly in vibration tests. Relatively simple combination of permanent magnets and electromagnet serves as noncontact vibration source for nondestructive testing of metal aircraft skins. In test, source excites vibrations, and vibration waveforms measured, then analyzed for changes in resonances signifying cracks and other flaws.
Noncontact Electromagnetic Vibration Source
NASA Tech Briefs ; 18 , 3
1994-03-01
Miscellaneous
No indication
English
Physical Sciences . Noncontact Electromagnetic Vibration Source
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