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A dual-function ESPI system for the measurement of out-of-plane displacement and slope

✍ Scribed by B. Bhaduri; N.K. Mohan; M.P. Kothiyal

Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 580 KB
Volume: 44
Category: Article
ISSN: 0143-8166
DOI: 10.1016/j.optlaseng.2005.05.004

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✦ Synopsis

A dual-function ESPI system is developed for the measurement of out-of-plane displacement and its slope change. The proposed system is convenient and also efficient to switch over from an out-of-plane sensitive configuration to shearography. A difference-ofphase method with a five-step algorithm is used for speckle fringe analysis.

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