Low-spatial-frequency steep grating for use in moire interferometry

F. X. Wang; Greg B. May; Albert S. Kobayashi

doi:10.1117/12.166937

1 April 1994 Low-spatial-frequency steep grating for use in moiré interferometry

F. X. Wang, Greg B. May, Albert S. Kobayashi

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Optical Engineering, Vol. 33, Issue 4, (April 1994). https://doi.org/10.1117/12.166937

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.

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F. X. Wang, Greg B. May, and Albert S. Kobayashi "Low-spatial-frequency steep grating for use in moiré interferometry," Optical Engineering 33(4), (1 April 1994). https://doi.org/10.1117/12.166937

Published: 1 April 1994

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