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|Title:||Direct measurement of curvature and twist of plates using digital shearography|
|Authors:||Chau, F.S. |
|Citation:||Chau, F.S., Zhou, J. (2003-04). Direct measurement of curvature and twist of plates using digital shearography. Optics and Lasers in Engineering 39 (4) : 431-440. ScholarBank@NUS Repository. https://doi.org/10.1016/S0143-8166(02)00025-8|
|Abstract:||A method of determining the second-order derivatives of displacement using digital shearing speckle interferometry is presented in this paper. A phase-shifting technique is incorporated and demonstrated to yield good quality fringe patterns that depict either the second-order derivative separately or a combination of first- and second-order derivatives. The optical set-up of this method is similar to that of conventional phase-shifting shearography, thus enjoying a simple and practical configuration. Qualitative comparison shows acceptable agreement of the generated fringe patterns with theoretical results. © 2002 Elsevier Science Ltd. All rights reserved.|
|Source Title:||Optics and Lasers in Engineering|
|Appears in Collections:||Staff Publications|
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