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Vibration detection using lasersInterference displacement patterns produced when light from a laser illuminates diffusely reflecting, vibrating surface are observed and photographed. Standing wave modes on model surface can be interpreted in order to yield amplitude and frequency of vibrations. Flat, white surfaces yield best interference patterns, even over considerable surface curvature.
Document ID
19710000144
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Massey, G. A. (SYLVANIA ELECTRON. SYSTEMS)
Date Acquired
August 6, 2013
Publication Date
May 1, 1971
Subject Category
Physical Sciences
Report/Patent Number
ARC-10389
Accession Number
71B10145
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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