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Proceedings Paper

Measurement Of Object's Dynamic Deformation By Means Of Projection Type Moire Topography
Author(s): Wu Ji- zong; Fu Wei-qiao; Ma De-liang
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Paper Abstract

The different kinds of projection type moire topography were compared briefly in this paper. The improved method of preparation and arrangement of gratings were introduced, and the real-time moire equidifference line method was proposed in principle. In addition, the approximate formula of equidifference line in non-telecentric optical path, and the principle and method of reproducing the reference grating were given. Finally, by means of the combination of projection type moire topography and real-time moire method with high-speed photography, the vibration of a thin beam fixedly supported at two ends and the impact deformation of a cantilever beam were recorded. The results of the qualitative analysis and patial quantitative analysis for them have been given.

Paper Details

Date Published: 7 June 1989
PDF: 5 pages
Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); doi: 10.1117/12.969163
Show Author Affiliations
Wu Ji- zong, Tianjin University (China)
Fu Wei-qiao, Tianjin University (China)
Ma De-liang, Tianjin University (China)


Published in SPIE Proceedings Vol. 1032:
18th Intl Congress on High Speed Photography and Photonics
DaHeng Wang, Editor(s)

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