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Proceedings Paper

PC-based determination of 3-D deformation using holographic interferometry
Author(s): Hanspeter Schad; Edwin Schweizer; Heibert Jodlbauer
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Paper Abstract

It is shown that a three-dimensional analysis of the deformation of a planar surface can be performed utilizing holographic interferometry and by simple and relatively inexpensive means. In order to obtain the in-plane deformations in addition to the out-of-plane deformation, a single interferogram resulting from the double exposure of two states with different mechanical loads has been viewed from at least three noncoplanar directions. The image distortion due to the perspective projection has been taken into account and a simple algorithm found to decompose the three deformations along the orthogonal coordinate axes. For the electronic recording, the fringe interpolation, and the demodulation of the two (pi) ambiguity, commercially available software has been used. This system has been applied to the investigation of a model drill tip under different compressive loads.

Paper Details

Date Published: 1 September 1991
PDF: 4 pages
Proc. SPIE 1507, Holographic Optics III: Principles and Applications, (1 September 1991); doi: 10.1117/12.47065
Show Author Affiliations
Hanspeter Schad, HILTI AG (Liechtenstein)
Edwin Schweizer, HILTI AG (Liechtenstein)
Heibert Jodlbauer, HILTI AG (Liechtenstein)

Published in SPIE Proceedings Vol. 1507:
Holographic Optics III: Principles and Applications
G. Michael Morris, Editor(s)

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