PC-based determination of 3-D deformation using holographic interferometry

Hanspeter Schad, Edwin Schweizer, Herbert Jodlbauer

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

1 Citation (Scopus)


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 π ambiguity, commercially available software has been used. This system has been applied to the investigation of a model drill tip under different compressive loads.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Number of pages4
Publication statusPublished - 1991
Externally publishedYes

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


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