Article ID Journal Published Year Pages File Type
736051 Optics and Lasers in Engineering 2006 8 Pages PDF
Abstract

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-of-phase method with a five-step algorithm is used for speckle fringe analysis.

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Physical Sciences and Engineering Engineering Electrical and Electronic Engineering
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A dual-function ESPI system for the measurement of out-of-plane displacement and slope
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