Automatic Measurement Of Deformations Of Curved Surface Using Carrier-Holography

Xu Zhu; Jiang Ke; Chen Yuzhuo; Zhang Bao-he

doi:10.1117/12.947673

14 December 1988 Automatic Measurement Of Deformations Of Curved Surface Using Carrier-Holography

Xu Zhu, Jiang Ke, Chen Yuzhuo, Zhang Bao-he

Proceedings Volume 0955, Industrial Laser Interferometry II; (1988) https://doi.org/10.1117/12.947673
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

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.

Citation Download Citation

Xu Zhu, Jiang Ke, Chen Yuzhuo, and Zhang Bao-he "Automatic Measurement Of Deformations Of Curved Surface Using Carrier-Holography", Proc. SPIE 0955, Industrial Laser Interferometry II, (14 December 1988); https://doi.org/10.1117/12.947673

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