Application of TTSP to wood-development of a vertical shift factor

The applicability of the time-temperature superposition principle (TTSP) to wood has been investigated aiming at the prediction of long-term mechanical properties of wood by both horizontally and vertically shifting of short-term stress relaxation data obtained by experiments. The expression of TTSP considering the vertical shift factor ( b T ) for wood is proposed the first time. The results showed that: (1) TTSP applied to poplar and the...