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Micro-Photoelasticity and its Picture Processing

  • Ryuichi Shintani
  • Toshiharu Yoshikawa
  • Toshimitsu Funayoshi
Conference paper

Synopsis

Two micro-photoelastic equipment models, reflective and transparent model, are made by improving of a metallurgical microscope. The sensitivity of the former model is twice that of the latter one. Photoelastic fringes can be observed clearly in a monofilament with 200 to 400 μm in diameter. Its fringes were analyzed by numerical integration. Some preliminary tests were also conducted with polymer monofilaments. Moreover, the equipment has been developed to continuously and automatically measure the coefficient of birefringence in monofilaments. Fringe patterns are recorded taken by a TV camera, then its video signals are fed to a microcomputer after being converted into digital signals by an A/D converter. The results are consistent with those from photographs.

Keywords

Test Piece Fringe Pattern Video Signal Reflective Model Liquid Bath 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Shintani R., Kubota T. and Yoshikawa T. (1984) Analyses of monofilaments in stretching process by micro-photoelasticity. Proc. Jpn. Soc. Photoelasticity, 5 1 –8.Google Scholar
  2. Stein R. S. and Tobolsky A. V. (1953) Determination of the statistical segment size of polymer chains from stress-birefringence studies. J. Polym. Sci.,11 285–288.Google Scholar
  3. Gurnee E. F. (1954) Theory of orientation and double refraction in polymers. J. Appl. Phys., 25 1232–1240.CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag Tokyo 1986

Authors and Affiliations

  • Ryuichi Shintani
    • 1
  • Toshiharu Yoshikawa
    • 1
  • Toshimitsu Funayoshi
    • 1
  1. 1.Department of Physics, Faculty of ScienceKwansei Gakuin UniversityUegahara, Nishinomiya 662Japan

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