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Publication Date:
May 2006
ISSN:
1437-434X
DOI:
10.1515/HF.2006.048

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Holzforschung

International Journal of the Biology, Chemistry, Physics, and Technology of Wood

Editor-in-Chief: Faix, Oskar

Editorial Board Member: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Salmen, Lennart / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Berry, Richard / Burgert, Ingo / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gellerstedt, Göran / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Heitner, Cyril / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Kleen, Marjatta / Koch, Gerald / Lachenal, Dominique / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Pizzi, Antonio / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Schwanninger, Manfred / Sipilä, Jussi / Tamminen, Tarja / Viikari, Liisa / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

8 Issues per year

Increased IMPACT FACTOR 2011: 1.748
5-year IMPACT FACTOR: 1.838
Rank 2 out of 21 in category Materials Science, Paper & Wood and 10 out of 59 in category Forestry in the 2011 Thomson Reuters Journal Citation Report/Science Edition.

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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 Takahashi1 / Yutaka Ishimaru2 / Ikuho Iida3 / Yuzo Furuta4

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2.

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Corresponding author. 1-5 Nakaragi-cho Shimogamo Sakyo-ku Kyoto 606-8522, Japan

Citation Information: Holzforschung. Volume 60, Issue 3, Pages 299–303, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: 10.1515/HF.2006.048, May 2006

Publication History:
Received:
October 27, 2005
Accepted:
February 22, 2006
Published Online:
2006-05-03

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.

Keywords: destabilization caused by moisture change; history of moisture change; mechano-sorptive creep

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