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Author (up) Bardet, S.; Beauchene, J.; Thibaut, B. openurl 
  Title Influence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical species Type Journal Article
  Year 2003 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.  
  Volume 60 Issue 1 Pages 49-59  
  Keywords green wood; tropical wood; transverse mechanical properties; basic density; softening temperature  
  Abstract The influence of temperature on transverse mechanical properties of 10 tropical species in green condition was studied in radial compression (0 to 99 degreesC), transverse shear with longitudinal-radial shearing plane and rupture of the longitudinal-tangential plane (20 to 80 degreesC). Basic density ranged from 0.21 to 0.91 g cm(-3). Load-displacement curves were characterised by initial rigidity, yield stress, yield strain and strain energy at 20% strain level. The relation between each criterion and basic density was expressed by a power law. The dependency on temperature evidenced a sharp glassy transition, except for the fracture energy only slightly influenced by temperature. An empirical model allowed evaluating a transition temperature between 51 and 69 degreesC, depending on the species and the criterion, which was attributed to lignin. Detailed analysis of the apparent modulus in radial compression suggested that complex relaxation phenomena occur around 10 degreesC and that the rubbery state is not fully reached at 80 degreesC.  
  Address Univ Montpellier 2, Lab Mecan & Genie Civil, Equipe Bois, F-34095 Montpellier 5, France  
  Corporate Author Thesis  
  Publisher E D P SCIENCES Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1286-4560 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000181322100006 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 275  
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