24 November 2016 Evaluation of 3D displacement components by combining DSCM with ESPI
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Abstract
A method for three-dimensional (3-D) deformation measurement is presented by combining Digital Speckle Correlation Method (DSCM) with Electronic Speckle Pattern Interferometry (ESPI). The combination is completed based on a typical ESPI system, in which the reference light is controlled to turn on or shut down. The in-plane displacement components are obtained by using DSCM when the reference light is shut. A phase shifting ESPI is formed when the reference light is used, which can be used for the measurement of the out-plane displacement component. A typical three-point-bending experiment is completed. Experiment results show that the three displacement components can be obtained by the combination effectively.
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Ping Sun, Ping Sun, Kai Shi, Kai Shi, Mingyong Sun, Mingyong Sun, Haibin Sun, Haibin Sun, } "Evaluation of 3D displacement components by combining DSCM with ESPI", Proc. SPIE 10023, Optical Metrology and Inspection for Industrial Applications IV, 100231V (24 November 2016); doi: 10.1117/12.2246288; https://doi.org/10.1117/12.2246288
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