1 April 1994 Low-spatial-frequency steep grating for use in moiré interferometry
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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.
F. X. Wang, F. X. Wang, Greg B. May, Greg B. May, Albert S. Kobayashi, 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 . Submission:

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