12 April 1990 Two Fringe Evaluation Methods Applied To Thermal Expansion Coefficient Measurements By Speckle-Photography: A Comparison
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Proceedings Volume 1183, Holography '89; (1990) https://doi.org/10.1117/12.963840
Event: Holography '89, 1989, Varna, Bulgaria
Abstract
Two fully automated and essentially different methods for Young's fringes analysis are applied to thermal expansion coefficient determination of engineering ceramics by double-exposure speckle-photography. The first one creates fringe structures and fits them to the experimental images. The cross-correlation functions between the given image and the generated fringe structure are calculated and serve as a measure of coincidence. In order to reduce the computational demands,the second method analyses the fringe intensity profile along four selected directions.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Koulev, P. Koulev, P. Aswendt, P. Aswendt, V. Balavessov, V. Balavessov, R. Hofling, R. Hofling, I. Roussev, I. Roussev, V. Grosser, V. Grosser, } "Two Fringe Evaluation Methods Applied To Thermal Expansion Coefficient Measurements By Speckle-Photography: A Comparison", Proc. SPIE 1183, Holography '89, (12 April 1990); doi: 10.1117/12.963840; https://doi.org/10.1117/12.963840
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