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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Effect of moisture content on the longitudinal tensile creep behavior of wood

Journal of Wood Science volume 51, pages 462–467 (2005)Cite this article

Abstract

In our previous report, we investigated the effect of the microfibril angle (MFA) in the middle layer of the secondary wall (S2) on the longitudinal creep behavior of a thin homogeneous earlywood specimen sugi. In the present study, we investigated the role of moisture on the tensile creep behavior of wood. We discuss the creep behavior of the wood cell wall from the viewpoint of the composite structure of the cell wall and the properties of the constituent materials. A microtomed thin specimen of earlywood of sugi (Cryptomeria japonica D.Don) was used for the longitudinal tensile creep test. Creep tests were conducted at three moisture stages (oven-dry, air-dry, fiber saturation point) over a broad range of MFA. Results showed that the longitudinal tensile creep behavior was highly dependent on both the moisture content and the MFA. With a small MFA, the variation in the creep function among the three moisture states was very small. For a large MFA, the variation in the creep function was larger. At low moisture contents, the magnitude of the creep function was very small, while at high moisture content, it was very large except for the case of specimens with very small MFA. Those results show that the longitudinal tensile creep behavior was directly affected by the fine composite structure and the internal properties of the cell wall constituents.

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Authors and Affiliations

  1. School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan

    Yoichi Kojima & Hiroyuki Yamamoto

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  1. Yoichi Kojima
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  2. Hiroyuki Yamamoto
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Correspondence to Hiroyuki Yamamoto.

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Kojima, Y., Yamamoto, H. Effect of moisture content on the longitudinal tensile creep behavior of wood. J Wood Sci 51, 462–467 (2005). https://doi.org/10.1007/s10086-004-0676-5

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  • DOI: https://doi.org/10.1007/s10086-004-0676-5

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