Determination of 3D stress by optical sensor field tomography

Dietrich Schupp

doi:10.1117/12.281189

17 September 1997 Determination of 3D stress by optical sensor field tomography

Dietrich Schupp

Proceedings Volume 3098, Optical Inspection and Micromeasurements II; (1997) https://doi.org/10.1117/12.281189
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

Abstract

A novel method for measuring arbitrary 3D states of mechanical stress in photoelastic models is presented. The theory of tensor field tomography is described and an iterative reconstruction algorithm is given, which processes the projection data received by illuminating the model for several orientations. The method generally works well for limited amount of stress, which is demonstrated by simulations. An experimental setup is presented for measuring the required projection data. It is a combination of an extended Mach-Zehnder interferometer and a polariscope.

Citation Download Citation

Dietrich Schupp "Determination of 3D stress by optical sensor field tomography", Proc. SPIE 3098, Optical Inspection and Micromeasurements II, (17 September 1997); https://doi.org/10.1117/12.281189

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