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https://doi.org/10.1016/S0143-8166(02)00025-8
Title: | Direct measurement of curvature and twist of plates using digital shearography | Authors: | Chau, F.S. Zhou, J. |
Keywords: | Curvature Digital shearography Phase shifting Second-order derivatives Twist |
Issue Date: | Apr-2003 | 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 | URI: | http://scholarbank.nus.edu.sg/handle/10635/59960 | ISSN: | 01438166 | DOI: | 10.1016/S0143-8166(02)00025-8 |
Appears in Collections: | Staff Publications |
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