caa a22 4500 46321689X CHVBK 20180405153159.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s00226-007-0127-8 doi (NATIONALLICENCE)springer-10.1007/s00226-007-0127-8 Bending characteristics of bamboo ( Phyllostachys pubescens ) with respect to its fiber-foam composite structure [Elektronische Daten] [Eiichi Obataya, Peter Kitin, Hidefumi Yamauchi] The bending properties of split bamboo culm were compared with those of spruce and beech wood specimens. The bamboo allowed large flexural deformation since its outer layer retains the tensile stress while the softer inner layer undergoes large compressive deformation. The results suggested that the combination of the fiber-rich outer part and the compressible inner part was responsible for the flexural ductility of split bamboo. To clarify the compressible nature of the inner part of bamboo, the longitudinal surfaces of the bamboo and wood specimens were microscopically observed before and after a large longitudinal compression. Although the wood specimens showed serious and localized buckling, the inner part of the bamboo specimens showed no such visible buckling. In the latter case, the foam-like parenchyma cells absorbed the large compressive deformation by their microscopic buckling and simultaneously, the alignment of sclerenchyma fibers was maintained by the surrounding parenchyma matrix. The flexural elasticity of the bamboo was compared to that of the wood in respect of remaining strain during cyclic bending tests. No clear difference was recognized between their remaining strains. This fact indicated that the bamboo was not so flexible elastically, although its fiber-foam combination and intelligent fiber distribution improve flexural ductility. Springer-Verlag, 2007 Obataya Eiichi Graduate School of Life and Environmental Sciences, University of Tsukuba, 305-8572, Ibaraki, Japan aut Kitin Peter Institute of Wood Technology, Akita Prefectural University, 016-0876, Noshiro, Akita, Japan aut Yamauchi Hidefumi Institute of Wood Technology, Akita Prefectural University, 016-0876, Noshiro, Akita, Japan aut Wood Science and Technology Springer-Verlag 41/5(2007-06-01), 385-400 0043-7719 41:5<385 2007 41 226 https://doi.org/10.1007/s00226-007-0127-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00226-007-0127-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Obataya Eiichi Graduate School of Life and Environmental Sciences, University of Tsukuba, 305-8572, Ibaraki, Japan aut NATIONALLICENCE 700 1- Kitin Peter Institute of Wood Technology, Akita Prefectural University, 016-0876, Noshiro, Akita, Japan aut NATIONALLICENCE 700 1- Yamauchi Hidefumi Institute of Wood Technology, Akita Prefectural University, 016-0876, Noshiro, Akita, Japan aut NATIONALLICENCE 773 0- Wood Science and Technology Springer-Verlag 41/5(2007-06-01), 385-400 0043-7719 41:5<385 2007 41 226 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer