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Techniques for Non-Birefringent Objects: Coherent Shearing Interferometry and Caustics

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Photomechanics

Part of the book series: Topics in Applied Physics ((TAP,volume 77))

Abstract

Shearing interferometric techniques that can provide information about the stress or deformation states of non-birefringent transparent materials and opaque specularly reflective materials are described. Two types of coherent shearing interferometers that provide full-field information about the gradients of the stress state of an object are discussed. These techniques have recently found use in stress analysis, especially in experimental fracture mechanics studies. In addition, a simpler technique called the method of caustics which is also applicable to non-birefringent materials is described in brief. This technique does not provide full-field information but has been of historical interest in experimental fracture mechanics. Examples of application of all three techniques are given.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Northwestern University, Evanston, IL, 60208-3020, USA

    Sridhar Krishnaswamy

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  1. Sridhar Krishnaswamy
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Editors and Affiliations

  1. Stress Analysis Laboratory IMAC-DGC, Swiss Federal Institute of Technology, 1015, Lausanne, Switzerland

    Pramod K. Rastogi

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© 2000 Springer-Verlag Berlin Heidelberg

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Krishnaswamy, S. (2000). Techniques for Non-Birefringent Objects: Coherent Shearing Interferometry and Caustics. In: Rastogi, P.K. (eds) Photomechanics. Topics in Applied Physics, vol 77. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-48800-6_9

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  • DOI: https://doi.org/10.1007/3-540-48800-6_9

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-65990-7

  • Online ISBN: 978-3-540-48800-2

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