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Calibration of materials for photoelastoplastic models

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Abstract

Photoplasticity is a possible method of analyzing the plastic behavior in a structural member. Various problems attendant with this technique, however, especially those concerning the fundamental relationship between the fringe order and the stress, and the photoelastic material in the plastic range remain to be investigated. A few studies on this relationship in a uniaxial stress state have been presented, but no evaluations have been made in a biaxial stress state, which is considered essential for practical application of the technique. Applying the photoelastic and the moiré methods, the relationship is investigated in detail in this paper in both stress states using a tensile specimen with a central hole. It is revealed that in the plate of polycarbonate there is a linear relationship between the fringe order and the difference of principal strains in the plastic range.

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Authors and Affiliations

  1. Départment of Mechanical Engineering, Saitama Institute of Technology, 1690 Fusaiji, Okabemachi, 369-02, Osato-gun, Saitama, Japan

    A. Shimamoto (Assistant Professor)

  2. Department of Mechanical Engineering, Kanto Gakuin University, 4834 Mutuuracho, 221, Kanazawa-ku, Yokohama, Japan

    S. Takahashi (Professor)

Authors
  1. A. Shimamoto
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  2. S. Takahashi
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Shimamoto, A., Takahashi, S. Calibration of materials for photoelastoplastic models. Experimental Mechanics 30, 114–119 (1990). https://doi.org/10.1007/BF02410235

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  • DOI: https://doi.org/10.1007/BF02410235

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