HEATING AND TEMPERATURE DISTRIBUTION UNDER CYCLIC DEFLECTION IN THE NONLINEAR REGION FOR WOOD

Temperature distribution during a fatigue process was examined under c yclic deflection in the non-linear region. The cyclic deflection cause d a remarkable and local rise in temperature by the heating due to vis cosity of air-dried wood. The appearance of the peak in temperature ve rsus the logarithmic cyclic number was explained on the basis of visco sity change due to moisture movement and vaporization by heating durin g the fatigue process. The change of the temperature distribution was related to the heat transfer and the heat capacity of wood.