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Optical Engineering

Three-Beam Interferometric Technique For Determination Of Strain Of Curved Surfaces
Author(s): F. P. Chiang; C. C. Kin
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Paper Abstract

By using three noncoplanar coherent laser beams intersecting one another at angles larger than 30°, three sets of interferometric gratings are generated. By placing a specimen coated with a photosensitive material inside this grating field and exposing it before and after load, one can obtain three distinctive moire fringe patterns, from which principal surface strains can be calculated by using the strain rosette formula.

Paper Details

Date Published: 1 December 1984
PDF: 3 pages
Opt. Eng. 23(6) 236766 doi: 10.1117/12.7973379
Published in: Optical Engineering Volume 23, Issue 6
Show Author Affiliations
F. P. Chiang, State University of New York at Stony Brook (United States)
C. C. Kin, State University of New York at Stony Brook (United States)


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