文献类型：期刊文献

英文题名：Compression Strength and Modulus of Elasticity Parallel to the Grain of Oak Wood at Ultra-low and High Temperatures

作者：Jiang, Jinghui[1] Lu, Jianxiong[1] Zhou, Yongdong[1] Zhao, Youke[1] Zhao, Liyuan[1]

第一作者：江京辉

通信作者：Lu, JX[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2014

卷号：9

期号：2

起止页码：3571-3579

外文期刊名：BIORESOURCES

收录：;EI(收录号：20212410499547);Scopus(收录号：2-s2.0-84925468981);WOS:【SCI-EXPANDED(收录号:WOS:000336960700140)】；

基金：This work was financially supported by a project of the Research Institute for New Forestry Technology of the Chinese Academy of Forestry (CAFINT2013C09) and the National Key Technology Research and Development Program (No. 2012BAD24B02).

语种：英文

外文关键词：Compression strength; Compression modulus of elasticity; Ultra-low temperature; High temperature

摘要：The influence of temperature on the compression strength (f(c0)) in the range of -196 degrees C to +220 degrees C, and compression modulus of elasticity (E-c0) parallel to the grain of oak (Quercus mongolica Fisch et Turcz.) wood in the range of -196 degrees C to +23 degrees C were studied. Five specimens were prepared for each temperature level. The specimens were kept at each temperature level for 30 min before a mechanical test was performed in an adjustable-temperature chamber. The results indicated that there were four different failure patterns, depending on the temperature range. When the temperature was decreased from +23 degrees C to -196 degrees C, the f(c0) and E-c0 of wood increased by 283.91% and 146.30%, respectively. The relationships between f(c0) and temperature and between E-c0 and temperature could be described by a linear and a polynomial model, respectively. Moreover, the E-c0 could be used to predict f(c0) using a polynomial model. However, when the temperature was increased from +23 degrees C to +220 degrees C, the f(c0) decreased by 67%, indicating a non-linear relationship.