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YIN Ya-fang, LÜ Jian-xiong, NI Chun, REN Hai-qing. Evaluating static bending elastic properties of full-size lumbers by using transverse vibration method[J]. Journal of Beijing Forestry University, 2005, 27(5): 107-110.
Citation: YIN Ya-fang, LÜ Jian-xiong, NI Chun, REN Hai-qing. Evaluating static bending elastic properties of full-size lumbers by using transverse vibration method[J]. Journal of Beijing Forestry University, 2005, 27(5): 107-110.

Evaluating static bending elastic properties of full-size lumbers by using transverse vibration method

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  • Received Date: September 29, 2004
  • Available Online: May 14, 2024
  • The possibility of a non-destructive transverse vibration technique was studied to evaluate static bending elastic properties of full-size lumbers.Sixty-two commercial spruce, pine and fir lumbers (38mm×89mm×3 658mm) from North American were selected for modulus of elasticity (MOE) tests.The dynamic MOE and two static MOE of each lumber, based on transverse vibration (Etv), four-point bending test of ASTM D198-99(E1) and ASTM D4761-96(E2) respectively, were measured under an air-dried condition.The results indicated that the average Etv was 5%(0.56 GPa) greater than E1and 15%(1.46GPa) greater than E2.Statistical linear regression analyses revealed that significant relationships were evident among dynamic and static elastic properties (at the level of 0.01).The correlation coefficient was 0.853 between Etv and E1,and 0.881 between Etv and E2.Therefore, it can be concluded that the non-destructive transverse vibration technique can be applied to predict static properties of full-size lumber and provide an indication of the potential for the wood quality evaluation.
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