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Vibration measurement by pulse differential holographic interferometryTechnique measures structural deformation of materials subjected to wide range of temperatures and other environmental conditions. Effects of convection currents are eliminated by operating a pulsed laser in double pulse mode that exposes hologram twice in quick succession.
Document ID
19730000075
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Evensen, D. A. (TRW, Inc.)
Aprahamian, R. (TRW, Inc.)
Date Acquired
August 7, 2013
Publication Date
March 1, 1973
Subject Category
Physical Sciences
Report/Patent Number
LAR-11092
Report Number: LAR-11092
Accession Number
73B10075
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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