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Proceedings Paper

A new finding about the coupled fringes of off-plane displacement and slope in shadow moiré and its optical analysis
Author(s): Hai Yun; Dazhen Yun
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Paper Abstract

The traditional concepts considered that only off-plane displacement can be obtained by the shadow moire method, but the slope moire fringes must be obtained from the specimen with mirror surface by the reflection moire method, etc. However, our recent experimental results reveal that the off-plane displacement fringe and the slope fringe appear together in a shadow moire pattern under experimental definitions. The basic principle and related experiment techniques are presented firstly in this paper. Two examples, a thin hyperboloidal shell and a thin cylindrical shell with local buckling, are given to demonstrate the actual coupled moire fringe patterns. Moreover, two distribution curves of δWx and W along asymmetry axis on the thin hyperboloidal shell are also calculated.

Paper Details

Date Published: 10 February 2005
PDF: 5 pages
Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); doi: 10.1117/12.575051
Show Author Affiliations
Hai Yun, Dalian Univ. of Technology (China)
Dazhen Yun, Dalian Univ. of Technology (China)

Published in SPIE Proceedings Vol. 5638:
Optical Design and Testing II
Yongtian Wang; Zhicheng Weng; Shenghua Ye; Jose M. Sasian, Editor(s)

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