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Laser System Measures Two-Dimensional StrainPrincipal strains on surface of hot specimen determined at temperatures up to 750 degrees C by use of noncontact optical method based on work of I. Yamaguchi. Strains deduced from measured shifts in laser speckle patterns reflected from specimen. No preparation of surface required. Optical strain-measuring system includes rotatable assembly to enable measurement of strain in any desired direction along surface of specimen.
Document ID
19930000185
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Lant, Christian T. (Sverdrup Technology, Inc.)
Date Acquired
August 16, 2013
Publication Date
April 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 4
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
LEW-15046
ISSN: 0145-319X
Report Number: LEW-15046
Accession Number
93B10185
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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