Evaluation of Bending, Tensile and Compressive Strength of Structural Lumber with Transverse Vibration Technique
YIN Ya-fang
L(U) Jian-xiong
NI Chun
REN Hai-qing
Abstract：The objective of this paper was to investigate the possibility of a transverse vibration technique for assessing static bending, tensile and compressive strength of structural lumbers. A total of 186 pieces of 38 mm by 89 mm by 3 658 mm commercial Spruce-Pine-Fir (SPF) structural lumber from a Canadian sawmill was divided into three matched groups in terms of their modulus of elasticity (MOE) obtained from edgewisebending tests under three-point loading according to ASTM D4761. The matched groups were then tested with a transverse vibration device to measure the dynamic MOE, followed with tests to determine bending MOE and MOR and tensile strength according to ASTM D4761 and compressive strength according to ASTM D198, respectively. It is found that the correlation coefficients (R2) are 0. 766 between the dynamic MOE and the bending MOE and 0.651 between dynamic MOE and compressive strength. The weaker correlation (R2= 0.438) exists between dynamic MOE and bending MOR. However, there was no apparent correlation between tension strength and dynamic MOE. The result demonstrates that the transverse vibration technique can be used to predict bending and compressive properties of structural lumber.
Keywords：transverse vibrationstructural lumberbending strengthtensile strengthcompressive strength
Publication Date：2007-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 543-547 )