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Title: Surface profile measurement of low-frequency vibrating objects using temporal analysis of fringe pattern
Authors: Shang, H. M.
Tay, Cho Jui
Quan, Chenggen
Fu, Yu
Chen, Lujie
Keywords: DRNTU::Science::Physics::Optics and light
Issue Date: 2004
Source: Tay, C. J., Quan, C., Fu, Y., Chen, L., & Shang, H. M. (2004). Surface profile measurement of low-frequency vibrating objects using temporal analysis of fringe pattern. Optics and Laser Technology, 36(6), 471-476.
Series/Report no.: Optics and laser technology
Abstract: A simple and accurate algorithm (phase scanning method) is proposed for 3D surface contouring and dynamic response determination of a vibrating object. A sinusoidal fringe pattern is projected onto a low-frequency vibrating object by a programmable liquid crystal display projector. The fringe patterns 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 contour of the specimen at different instants of vibration can be retrieved. In this paper, a small vibrating coin is used to demonstrate the validity of the method and the experimental results are compared with test results on a stationary coin using four-step phase shifting and fast Fourier transform methods. The technique is especially useful in applications where the vibrating object has a complicated shape.
ISSN: 0030-3992
Rights: This is the author created version of a work that has been peer reviewed and accepted for publication by Optics and Laser Technology, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI:].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:TL Journal Articles

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