Measurement Of Object's Dynamic Deformation By Means Of Projection Type Moire Topography

Wu Ji- zong; Fu Wei-qiao; Ma De-liang

doi:10.1117/12.969163

7 June 1989 Measurement Of Object's Dynamic Deformation By Means Of Projection Type Moire Topography

Wu Ji- zong, Fu Wei-qiao, Ma De-liang

Proceedings Volume 1032, 18th Intl Congress on High Speed Photography and Photonics; (1989) https://doi.org/10.1117/12.969163
Event: 18th International Congress on High Speed Photography and Photonics, 1988, Xi'an, Shaanxi, China

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.

Citation Download Citation

Wu Ji- zong, Fu Wei-qiao, and Ma De-liang "Measurement Of Object's Dynamic Deformation By Means Of Projection Type Moire Topography", Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); https://doi.org/10.1117/12.969163

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