Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.optcom.2003.11.035
DC FieldValue
dc.titleDetermination of surface contour by temporal analysis of shadow moiré fringes
dc.contributor.authorQuan, C.
dc.contributor.authorFu, Y.
dc.contributor.authorTay, C.J.
dc.date.accessioned2014-06-17T06:16:44Z
dc.date.available2014-06-17T06:16:44Z
dc.date.issued2004-01-15
dc.identifier.citationQuan, C., Fu, Y., Tay, C.J. (2004-01-15). Determination of surface contour by temporal analysis of shadow moiré fringes. Optics Communications 230 (1-3) : 23-33. ScholarBank@NUS Repository. https://doi.org/10.1016/j.optcom.2003.11.035
dc.identifier.issn00304018
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/59886
dc.description.abstractA simple temporal analysis algorithm (phase scanning method) is proposed for 3-D surface profile measurement of a vibrating object based on shadow moiré technique. A grating is positioned close to a low-frequency vibrating object and its shadow is observed through the grating. The moiré fringe patterns, generated by the interference of grating lines and shadow lines, are captured by a high-speed CCD camera with a telecentric gauging lens. Phase values are evaluated point by point using phase scanning method. From the phase values of each point on the object, the high-quality surface profile of the specimen at different instants of vibration can be retrieved. In this application, two specimens are tested to demonstrate the validity of the method, one is a spherical cap with height of 4 mm, the other is a small coin with unevenness of less than 0.2 mm. The experimental results are compared with test results using mechanical stylus method. © 2003 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.optcom.2003.11.035
dc.sourceScopus
dc.subjectHigh-speed imaging
dc.subjectShadow moiré
dc.subjectSurface contour
dc.subjectTemporal phase analysis
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1016/j.optcom.2003.11.035
dc.description.sourcetitleOptics Communications
dc.description.volume230
dc.description.issue1-3
dc.description.page23-33
dc.description.codenOPCOB
dc.identifier.isiut000187909400004
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