Please use this identifier to cite or link to this item:
|Title:||Determination of surface contour by temporal analysis of shadow moiré fringes||Authors:||Quan, C.
Temporal phase analysis
|Issue Date:||15-Jan-2004||Citation:||Quan, 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||Abstract:||A 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.||Source Title:||Optics Communications||URI:||http://scholarbank.nus.edu.sg/handle/10635/59886||ISSN:||00304018||DOI:||10.1016/j.optcom.2003.11.035|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 11, 2019
WEB OF SCIENCETM
checked on Dec 3, 2019
checked on Dec 1, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.