JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2011, Vol. 35 ›› Issue (06): 107-110.doi: 10.3969/j.jssn.1000-2006.2011.06.022

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Modulus of elasticity in tension parallel to grain of bamboo based on DSCM

LI Xiazhen1,REN Haiqing1*,MA Shaopeng2   

  1. 1. Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091,China; 2. Department of Mechanics, Beijing Institute of Technology, Beijing 100081, China
  • Online:2011-11-28 Published:2011-11-28

Abstract: Digital speckle correlation method (DSCM) was used in studying modulus of elasticity in tension parallel to grain of bamboo. Results obtained from DSCM were compared with those of conventional extensometer method. The results showed that the errors of the two results were within 5 %, this indicated that DSCM could be used to study modulus of elasticity in tension parallel to grain successfully. Then, the modulus of elasticity in tension parallel to grain of outer, middle and inner layers of five different bamboo were determined by DSCM. The results showed that the change trends of the modulus of elasticity in tension parallel to grain were related with ages and sites,it kept a decreasing trend from the outer to inner layer of stalks, and it increased with age increasing

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