Computer-aided holometry in the automotive industry

Gordon M. Brown

doi:10.1117/12.170177

1 June 1993 Computer-aided holometry in the automotive industry

Gordon M. Brown

Proceedings Volume 10268, Optical Inspection and Testing: A Critical Review; 1026803 (1993) https://doi.org/10.1117/12.170177
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

In the past, holometry methods have been used primarily for problem solving in structures that were already in production, often where limited opportunities existed to make expensive modifications to existing tooling. Infrequently holometry was used by knowledgeable engineers to develop optimized components in the prototype stage even without the current CAE methods. The opportunity and challenge of our day is to closely couple CAE (FEA, EFA, BEA) methods and experimental methods (Computer Aided Holometry (CAH), modal, etc.) to optimize structural performance in the upstream product development process where necessary tooling modifications can and will be made. Holometry is used by American, European and Japanese automobile manufactures and several commercial sources for equipment and software are now available.

The capabilities of Ford USA’s CAH system for stepped phase interferometry are presented. Holographic test equipment and facilities are briefly reviewed. Fringe analysis algorithms and procedures for practical semiautomated processing of stepped phase interferograms of complex real life structures for quantitative measurement of deformation and shape are discussed. Several automotive applications illustrating the fringe analysis technique are presented.

Citation Download Citation

Gordon M. Brown "Computer-aided holometry in the automotive industry", Proc. SPIE 10268, Optical Inspection and Testing: A Critical Review, 1026803 (1 June 1993); https://doi.org/10.1117/12.170177

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