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The creep of wood destabilized by change in moisture content. Part 3: The influence of changing moisture history on creep behavior

  • Chika Takahashi , Yutaka Ishimaru , Ikuho Iida and Yuzo Furuta
Published/Copyright: May 3, 2006
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Holzforschung
From the journal Volume 60 Issue 3

Abstract

The creep of wood increases remarkably during moisture changes, a phenomenon called mechano-sorptive creep. The microstructure in cell walls of wood is destabilized by changes in temperature and/or moisture content. The mechanical properties of destabilized wood change over long periods of time. In the present study, the influence of moisture conditioning history on bending creep was examined. During changes in moisture, greater creep occurred in wood subjected to the first moisture change after long-term moisture conditioning than immediately after desorption or adsorption. This result indicates a kind of memory effect immediately after moisture change. During desorption processes, greater creep occurred immediately after slow adsorption than immediately after rapid adsorption. In the course of adsorption, the reverse was observed: the creep was greater immediately after rapid desorption than immediately after slow desorption. Accordingly, greater instability immediately after a change in moisture does not always cause greater creep during the next moisture change. The size of the moisture change and the load level affect the recovery of creep during adsorption processes.

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References

Armstrong, L.D., Christensen, G.N. (1961) Influence of moisture changes on deformation of wood under stress. Nature191:869–870.10.1038/191869a0Search in Google Scholar

Armstrong, L.D., Kingston, R.S.T. (1962) The effect of moisture content changes on the deformation of wood under Stress. Aust. J. Appl. Sci.13:257–276.Search in Google Scholar

Christensen, G.N. (1962) The use of small specimens for studying the effect of moisture content changes on the deformation of wood under load. Aust. J. Appl. Sci.13:242–256.Search in Google Scholar

Gibson, E.J. (1965) Creep of wood: role of water and effect of a changing moisture content. Nature206:213–215.10.1038/206213a0Search in Google Scholar

Grossman, P.U.A. (1976) Requirements for a model that exhibits mechano-sorptive behaviour. Wood Sci. Technol.10:163–168.10.1007/BF00355737Search in Google Scholar

Hearmon, R.F.S., Paton, J.M. (1964) Moisture content changes and creep of wood. For. Prod. J.14:357–359.Search in Google Scholar

Hunt, D. (1996) Application of physical-aging theory and a hygro-locks model to mechano-sorptive creep. In: Proceedings of the International COST 508 Wood Mechanics Conference. pp. 37–45.Search in Google Scholar

Hunt, D., Gril, J. (1996) Evidence of a physical aging phenomenon in wood. J. Mater. Sci. Lett.15:80–82.10.1007/BF01855620Search in Google Scholar

Iida, I., Murase, K., Ishimaru, Y. (2002) Stress relaxation of wood during the elevating and lowering processes of temperature and the set after relaxation. II. Consideration of the mechanism and simulation of stress relaxation behavior using a viscoelastic model. J. Wood Sci.48:119–125.10.1007/BF00766231Search in Google Scholar

Ishimaru, Y., Oshima, K., Iida, I. (2001) Changes in the mechanical properties of wood during the period of moisture conditioning. J. Wood Sci.47:254–261.10.1007/BF00766710Search in Google Scholar

Mukudai, J., Yata, S. (1986) Modeling and simulation of viscoelastic behavior (tensile strain) of wood under moisture. Wood Sci. Technol.20:335–348.10.1007/BF00351586Search in Google Scholar

Mukudai, J., Yata, S. (1987) Further modeling and simulation of viscoelastic behavior (bending deflection) of wood under moisture. Wood Sci. Technol.21:49–63.10.1007/BF00349717Search in Google Scholar

Mukudai, J., Yata, S. (1988) Verification of Mukudai's mechano-sorptive model. Wood Sci. Technol.22:43–58.10.1007/BF00353227Search in Google Scholar

Takahashi, C., Ishimaru, Y., Iida, I., Furuta, Y. (2004) The creep of wood destabilized by change in moisture content. Part 1: The creep behaviors of wood during and immediately after drying. Holzforschung58:261–267.Search in Google Scholar

Takahashi, C., Ishimaru, Y., Iida, I., Furuta, Y. (2005) The creep of wood destabilized by change in moisture content. Part 2: The creep behaviors of wood during and immediately after adsorption. Holzforschung59:46–53.Search in Google Scholar

Takemura, T. (1966) Plastic properties of wood in relation to the non-equilibrium states of moisture content. Memoirs of the College of Agriculture of Kyoto University 88:31–48.Search in Google Scholar

Takemura, T. (1967) Plastic properties of wood in relation to the non-equilibrium states of moisture content (continued). Mokuzai Gakkaishi13:163–168.Search in Google Scholar

Takemura, T. (1968) Plastic properties of wood in relation to the non-equilibrium states of moisture content (re-continued). Mokuzai Gakkaishi14:406–410.Search in Google Scholar

Published Online: 2006-05-03
Published in Print: 2006-05-01

©2006 by Walter de Gruyter Berlin New York

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