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Stress relaxation of wood during 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
Springer Science and Business Media LLC - Tập 48 - Trang 119-125 - 2002
Ikuho Iida, Michiyasu Kudo, Jyunji Onizuka, Yutaka Ishimaru, Yuzo Furuta
Previously we showed that the relaxation modulusEt of water-saturated wood during temperature reduction maintained its initial value despite the decrease in temperature, although during temperature elevationEt showed a marked decrease. In the present study, to clarify the mechanism of relaxation during temperature elevation and reduction, Young's modulus was measured in stress relaxation experimen...... hiện toàn bộ
Research on design value of compressive strength for Chinese fir dimension lumber based on full-size testing
Springer Science and Business Media LLC - Tập 63 - Trang 56-64 - 2016
Yingchun Gong, Guofang Wu, Xiuqin Luo, Zhaohui Wang, Jinghui Jiang, Haiqing Ren
The objective of this study was to obtain design value, which was calculated according to the limit states design method, for the utilization of Chinese fir in the building structure field as a green building material. A total of 342 specimens were tested by static compression method. The normal and lognormal distributions were selected to fit the experimental data. The results indicated that reli...... hiện toàn bộ
Chemical structures of p-menthane monoterpenes with special reference to their effect on seed germination and termite mortality
Springer Science and Business Media LLC - Tập 59 Số 3 - Trang 229-237 - 2013
Nobuhiro Sekine, Sakae Shibutani
Novel paper strength additive containing cellulose-binding domain of cellulase
Springer Science and Business Media LLC - Tập 47 - Trang 322-324 - 2001
Takuya Kitaoka, Hiroo Tanaka
Time dependence of Poisson’s effect in wood III: asymmetry of three-dimensional viscoelastic compliance matrix of Japanese cypress
Springer Science and Business Media LLC - Tập 59 - Trang 290-298 - 2013
Kosei Ando, Mayu Mizutani, Yusuke Taniguchi, Hiroyuki Yamamoto
To understand the viscoelasticity of wood three dimensionally, matched samples of Japanese cypress were loaded in uniaxial tensile creep in the longitudinal (L), radial (R), and tangential (T) directions at approximately 9.7 % equilibrium moisture content. Longitudinal and transverse strains were measured for the determination of viscoelastic Poisson’s ratios and three-dimensional viscoelastic com...... hiện toàn bộ
Fatigue of structural plywood under cyclic shear through thickness III: energy dissipation performance
Springer Science and Business Media LLC - Tập 54 - Trang 169-173 - 2008
Takanori Sugimoto, Yasutoshi Sasaki
Wood and wood composites have viscoelasticity, and show a hysteresis loop in the stress-strain relationship during cyclic loading such that part of the mechanical work applied is dissipated in the materials. In this study, the energy dissipation performance of plywood specimens under cyclic shear through thickness was investigated. Fatigue testing was conducted under three loading conditions: a sq...... hiện toàn bộ
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Springer Science and Business Media LLC - Tập 60 - Trang 480-482 - 2014
Reaction of manganese peroxidase ofBjerkandera adusta with synthetic lignin in acetone solution
Springer Science and Business Media LLC - Tập 44 - Trang 486-490 - 1998
Shinichi Yoshida, Akinobu Chatani, Yoichi Honda, Takashi Watanabe, Masaaki Kuwahara
The reaction of manganese peroxidase (MnP) of the white-rot fungusBjerkandera adusta with synthetic lignin dehydrogenation polymer, DHP) in acetone medium was investigated. Gel-permeation chromatography of the DHP treated by MnP demonstrated depolymerization of syringyl DHP in the reaction mixture containing 70% acetone; moreover, concomitant repolymerization occurred to give highly polymerized pr...... hiện toàn bộ
Bow variation in kiln-dried boxed-heart square timber of sugi (Cryptomeria japonica) cultivars
Springer Science and Business Media LLC - Tập 57 - Trang 363-370 - 2011
Kana Yamashita, Yasuhiko Hirakawa, Shuetsu Saito, Hiroshi Nakatani, Motoyoshi Ikeda
To evaluate the bow variation in boxed-heart square timber of sugi (Cryptomeria japonica), bows from kiln-dried timber for five sugi cultivars with different longitudinal shrinkage trends were compared for two stem heights. Two general trends were observed, depending on the cultivar: (1) either the bow was larger at the lower than at the upper part of the stem, or (2) the bows at the lower and the...... hiện toàn bộ
Manufacture and properties of high-performance oriented strand board composite using thin strands
Springer Science and Business Media LLC - - 1998
Min Zhang, Ee-ding Wong, Shinya Kawai, Jin-Heon Kwon
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