Please use this identifier to cite or link to this item: https://doi.org/10.1117/1.3359470
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dc.titleDirect measurement of curvature and twist using two-channel double-aperture digital shearography
dc.contributor.authorBhaduri, B.
dc.contributor.authorTay, C.J.
dc.contributor.authorQuan, C.
dc.date.accessioned2014-06-17T06:17:38Z
dc.date.available2014-06-17T06:17:38Z
dc.date.issued2010
dc.identifier.citationBhaduri, B., Tay, C.J., Quan, C. (2010). Direct measurement of curvature and twist using two-channel double-aperture digital shearography. Optical Engineering 49 (3) : -. ScholarBank@NUS Repository. https://doi.org/10.1117/1.3359470
dc.identifier.issn00913286
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/59961
dc.description.abstractA direct method of determining second-order derivatives of displacement (curvature and twist) using two-channel double-aperture digital shearography is presented. Spatial carrier fringes are incorporated inside the speckle using a double-aperture mask in a two-channel experimental setup. Two sets of slope phase maps are generated that are either shifted in the x direction for curvature measurement or in the y direction for twist measurement. Experimental results are presented to verify the validity of the proposed method. © 2010 Society of Photo-Optical Instrumentation Engineers.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1117/1.3359470
dc.sourceScopus
dc.subjectcurvature
dc.subjectdigital shearography
dc.subjectfast Fourier transform
dc.subjectfiltering
dc.subjectspeckle
dc.subjecttwist
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1117/1.3359470
dc.description.sourcetitleOptical Engineering
dc.description.volume49
dc.description.issue3
dc.description.page-
dc.description.codenOPEGA
dc.identifier.isiut000276931100004
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