Summary
The author gives numerical data resulting from detailed measurements on a common softwood,Picea abies; which can form the basis for the verification of new structural models of wood cell walls. Some suggestions are made for the interpretation of the data, including the development of internal stresses followed by relaxation, molecular destabilisation followed by physical aging during moisture changes, and differing forms of moisture bonding.
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References
Barkas, W. 1949: The swelling of wood under stress. London: HMSO
Cave, I. 1978: Modelling moisture-related mechanical properties of wood. Part I: Properties of the wood constituents. Wood Sci. Technol. 12: 75–86
Darlington, M.;Saunders, D. 1970: An apparatus for the measurement of tensile creep and contraction ratio in small non-rigid specimens. J. Phys. (E) 3: 511–514
Gril, J. 1993: Private communication
Grossman, P. 1976: Requirements for a model that exhibits mechano-sorptive behaviour. Wood Sci. Technol. 10: 163–168
Hunt, D.;Darlington, M. 1978: Accurate measurement of creep of nylon-6, 6 at constant temperature and humidity. Polymer 19: 977–983
Hunt, D.;Shelton, C. 1987: Progress in the analysis of creep in wood during concurrent moisture changes. J. Materials Sci. 22: 313–320
Hunt, D.;Shelton, C. 1988: Longitudinal moisture-shrinkage coefficients of softwood at the mechano-sorptive creep limit. Wood Sci. Technol. 22: 199–210
Hunt, D. 1990: Longitudinal shrinkage-moisture relations in softwood. J. Materials Sci. 25: 3671–3676
Hunt, D. 1994: Present knowledge of mechano-sorptive creep of wood. In: Morlier, P. (Ed.): Creep in timber structures. p. 74. London: Spon
Joyet, P. 1992: Comportement differé du materiau bois dans le plan transverse sous des conditions hydriques évolutives. Doctoral thesis, Université Bordeaux I
Kollmann, F. 1963: Zur Theorie der Sorption. Forsch. Gebiete Ingenieurw. 29: 33–41
Launay, J. 1993: Private communication
Morlier, P. (Ed.) 1994: Creep in timber structures. London: Spon
Norimoto, M.;Ohgama, T.;Ono, T.;Tanaka, F. 1981: Young's modulus of cell wall for coniferous wood. J. Soc. Rheology, Jap. 9: 169–175
Ranta-Maunus, A. 1975: The viscoelasticity of wood at varying moisture content. Wood Sci. Technol. 9: 189–205
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Hunt, D.G. Dimensional changes and creep of spruce, and consequent model requirements. Wood Sci.Technol. 31, 3–16 (1997). https://doi.org/10.1007/BF00705696
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DOI: https://doi.org/10.1007/BF00705696