Optical Tensor Field Tomography for the Determination of 3D Stress in Photoelastic Materials
Institut für Meß- und Regelungstechnik, University of Karlsruhe, Postfach 6980, D-76128 Karlsruhe, Germany
Abstract - There are many well-known tomographic methods for the determination of physical quantities in a 2D or 3D space. Most of these quantities are scalar or vectorial. In this paper, a novel method is presented to determine the 3D stress tensor in photoelastic materials by applying optical tensor field tomography. The theory of the projection is described, and the principles of two reconstruction algorithms are explained. The experimental setup is presented, and difficulties in measuring the projections are shown.
Keywords: tensor field tomography, mechanical stress, integrated photoelasticity, interferometric phase measurement
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