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Estimation of moisture content of lumber and logs using higher natural frequency of longitudinal vibrations


, : Estimation of moisture content of lumber and logs using higher natural frequency of longitudinal vibrations. Mokuzai Gakkaishi = Journal of the Japan Wood Research Society 40(5): 474-480

Based on the measurement of higher natural frequencies of logs and lumber of sugi (Cryptomeria japonica) under loading, it seems possible to estimate moisture change.

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Aratake, S.; Arima, T., 1994: Estimation of modulus of rupture (MOR) and modulus of elasticity (MOE) of lumber using higher natural frequency of log in pile of logs II. Possibility of application for sugi square lumber with pith. A simple grading method was investigated in which modulus of rupture and modulus of elasticity of square lumber with pith after sawing could be assessed using the fourth natural frequency of longitudinal vibration sugi (Cryptomeria japonica) logs...

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