The Shadow Optical Method of Caustics

An Overview on its Applications in Stress Concentration Problems
  • J. F. Kalthoff
Conference paper


The shadow optical method of caustics is a relatively new experimental technique in stress strain analysis. It was originally introduced by Manogg (1964) for investigating crack tip stress intensifications. The method is sensitive to stress gradients and therefore is an appropriate tool for quantifying stress concentration problems. The technique was extended later by Theocaris (1971–1981), Rosakis (1982, 1983) and the author and his colleagues (1976–1986) to different conditions of loading, material behavior, in static as well as dynamic situations. This summarizing article reviews the basic physical principles and the mathematical analyses of the method and gives applications to various problems of practical relevance.


Stress Intensity Factor Dynamic Stress Intensity Factor Isochromatic Fringe Shadow Pattern Caustic Curve 
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Copyright information

© Springer-Verlag Tokyo 1986

Authors and Affiliations

  • J. F. Kalthoff
    • 1
  1. 1.Fraunhofer-Instiut für WerkstoffmechanikFreiburg/Brsg.Federal Republic of Germany

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