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Optical Engineering

Low-spatial-frequency steep grating for use in moiré interferometry
Author(s): F. X. Wang; Greg B. May; Albert S. Kobayashi
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Paper Abstract

The theoretical background and the procedure for executing a new moiré interferometry method, which combines the advantages of geometric and traditional moiré interferometry, are reported. The method uses a low-spatial-frequency steep grating of about 40 lines/mm on a mirror-finished specimen surface to achieve high-contrast moiré fringes. A special four-beam moiré interferometry bench is designed for the low-grating frequency used. An application to experimental fracture mechanics analysis is briefly discussed.

Paper Details

Date Published: 1 April 1994
PDF: 7 pages
Opt. Eng. 33(4) doi: 10.1117/12.166937
Published in: Optical Engineering Volume 33, Issue 4
Show Author Affiliations
F. X. Wang, Nanchang Institute of Aeronautical Technology (China)
Greg B. May, Univ. of Washington (United States)
Albert S. Kobayashi, Univ. of Washington (United States)

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