Large deformability derived from a cell–cell slip mechanism in intercellular regions of solid wood

Large deformability derived from a cell–cell slip mechanism in intercellular regions of solid wood A uniaxial compression experiment with solid wood under various saturated vapor temperature conditions revealed that remarkable deformation occurred in the tangential direction at higher temperatures of up to 180°C, with minimal longitudinal deformation. The maximum deformation ratio in the tangential direction exceeded 200% of the initial specimen diameter although a decrease in thickness became less than the tenth part of the initial one. Microscopic observations indicated that the large deformation behavior resulted from an accumulation of changing original position in mutual wood cells, which led to slip at the intercellular layer. Scanning probe microscopy indicated that this phenomenon was a result of the hierarchical structure of the wood cell and that the intercellular layer becomes selectively softened under specific hygrothermal conditions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Mechanica Springer Journals

Large deformability derived from a cell–cell slip mechanism in intercellular regions of solid wood

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Publisher
Springer Vienna
Copyright
Copyright © 2015 by Springer-Verlag Wien
Subject
Engineering; Theoretical and Applied Mechanics; Classical and Continuum Physics; Continuum Mechanics and Mechanics of Materials; Structural Mechanics; Vibration, Dynamical Systems, Control; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0001-5970
eISSN
1619-6937
D.O.I.
10.1007/s00707-015-1523-z
Publisher site
See Article on Publisher Site

Abstract

A uniaxial compression experiment with solid wood under various saturated vapor temperature conditions revealed that remarkable deformation occurred in the tangential direction at higher temperatures of up to 180°C, with minimal longitudinal deformation. The maximum deformation ratio in the tangential direction exceeded 200% of the initial specimen diameter although a decrease in thickness became less than the tenth part of the initial one. Microscopic observations indicated that the large deformation behavior resulted from an accumulation of changing original position in mutual wood cells, which led to slip at the intercellular layer. Scanning probe microscopy indicated that this phenomenon was a result of the hierarchical structure of the wood cell and that the intercellular layer becomes selectively softened under specific hygrothermal conditions.

Journal

Acta MechanicaSpringer Journals

Published: Dec 17, 2015

References

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