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Proceedings Paper

Automatic Measurement Of Deformations Of Curved Surface Using Carrier-Holography
Author(s): Xu Zhu; Jiang Ke; Chen Yuzhuo; Zhang Bao-he
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Paper Abstract

The present paper proposed a complete method to obtian whole-field displacements information at the curved surface of a body by using carrier-holography and rasterstereography. In the carrier-holography,the fringe pattern of interferogram consists of two parts. Ons is the displacement due to surface deformation, another is a straight fringe family with equal pitch produced by artificality and rigid body moving (if exist). the components of a displacement at every point are given from demodulating carrier-isothetics pattern by means of image processing. The space curvatures of a curved sueface are measured by the resterstereograph method. All the procedure from collecting image to printing result are completed automatically by a personal computer. For example, a model of a hyperboloidal arch dam is nonuniform heated,the thermal displacements on the arch suface are measured.

Paper Details

Date Published: 14 December 1988
PDF: 4 pages
Proc. SPIE 0955, Industrial Laser Interferometry II, (14 December 1988); doi: 10.1117/12.947673
Show Author Affiliations
Xu Zhu, Southeast University (China)
Jiang Ke, Southeast University (China)
Chen Yuzhuo, Southeast University (China)
Zhang Bao-he, Southeast University (China)


Published in SPIE Proceedings Vol. 0955:
Industrial Laser Interferometry II
Y.Y. Hung; Ryszard J. Pryputniewicz, Editor(s)

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