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Estimating the creep behavior of polycarbonate with changes in temperature and aging time

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Abstract

Thermoplastic resins are typically used without any kind of physical aging treatment. For such materials, creep behavior and physical aging, which depend on time and temperature, occur simultaneously. The effects of these processes are evident after quenching and are recorded in the material as a thermal history. This history strongly influences mechanical properties and creep behavior in particular. Thus, a more thorough understanding of the physical aging process is desirable. We examined the creep deformation of polycarbonate (PC) to reveal the effects of physical aging on creep behavior. The effects were dependent on both time and temperature. The relationship between physical aging and creep behavior exemplified superposition principles with regard to time and both pre-test aging time and pre-test aging temperature. The superposition principles allowed the calculation of creep deformations at a given temperature; the calculated results were corroborated by experimental data.

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Authors and Affiliations

  1. Faculty of Engineering, Tokyo Metropolitan University, 1-1, Minamiohsawa, Hachioji, Tokyo, 192-0397, Japan

    Takenobu Sakai

  2. Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kouhoku-ku, Yokohama, 223-8522, Japan

    Satoshi Somiya

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  1. Takenobu Sakai
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  2. Satoshi Somiya
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Correspondence to Takenobu Sakai.

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Sakai, T., Somiya, S. Estimating the creep behavior of polycarbonate with changes in temperature and aging time. Mech Time-Depend Mater 16, 241–249 (2012). https://doi.org/10.1007/s11043-011-9154-9

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  • DOI: https://doi.org/10.1007/s11043-011-9154-9

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