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Mechanical and optical characterization of cellulose acetate

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Abstract

To obtain the basic relations for photo-viscoelastoplastic stress analysis using cellulose acetate, the effect of strain rate as well as room temperature on mechanical and optical properties was precisely investigated by the uniaxial tension test. As a result, the nonlinear stress-strain, the non-linear-stress-fringe order and the nonlinear-fringe-order strain relations were uniquely reoresented in their nondimensional forms regardless of strain rate and room temperature. Young's modulus, yield stress and the yield fringe order were linearly related both to room temperature and to logarithm of strain rate. The effect of strain rate on these relations has caused great difficulties in experimental stress analysis with respect to photoplasticity. However, it was found in this work that the value of the strain rate at any points in the model can be determined by the fringe-order rate measured. Therefore, it is possible to estimate not only the distribution of strain rate but that of stress or strain in the photo-viscoelastoplastic model with cellulose acetate.

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Authors and Affiliations

  1. Department of Mechanical Engineering II, Hokkaido University, 060, Sapporo, Japan

    H. Ishikawa (Professor) & S. Tadano (Research Fellow)

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  1. H. Ishikawa
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  2. S. Tadano
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Ishikawa, H., Tadano, S. Mechanical and optical characterization of cellulose acetate. Experimental Mechanics 28, 221–225 (1988). https://doi.org/10.1007/BF02329014

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  • DOI: https://doi.org/10.1007/BF02329014

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