The universal creep equation is successful in relating the creep （ε） to the aging time （te）, coefficient of retardation time （β）, and intrinsic time （t0）. This relation was used to treat the creep experiment...The universal creep equation is successful in relating the creep （ε） to the aging time （te）, coefficient of retardation time （β）, and intrinsic time （t0）. This relation was used to treat the creep experimental data for polyvinyl chloride （PVC） specimens at a given stress and different aging times. The βgs found by the “polynomial fitting” method in this work instead of the “middle-point” method reported in the literature. The unified master line was constructed with the treated data and curves according to the universal equation. The master line can be used to predict the long-term creep behavior and lifetime by extrapolating.展开更多
The universal creep function is successful in relating the creep （ε） to the ageing time （ta）, coefficient of retardation time （β）, and intrinsic time （t0）. The relation was used to treat the creep experiment...The universal creep function is successful in relating the creep （ε） to the ageing time （ta）, coefficient of retardation time （β）, and intrinsic time （t0）. The relation was used to treat the creep experimental data for polystyrene （PS） specimens at a given aged time and different stress levels. Comparing with “middle-point” method reported in the literatures, β is found out by another method “polynomial fitting” in this work. Then unified master lines were constructed with the treated data and curves according to the universal equation. The master lines can be used to predict the long-term creep behaviour and lifetime by extrapolating to a required ultimate strain.展开更多
基金Sponsored by the Departmet of Science ad Technology, Government of Heilongjiang Province(Grant No.GC04A407).
文摘The universal creep equation is successful in relating the creep （ε） to the aging time （te）, coefficient of retardation time （β）, and intrinsic time （t0）. This relation was used to treat the creep experimental data for polyvinyl chloride （PVC） specimens at a given stress and different aging times. The βgs found by the “polynomial fitting” method in this work instead of the “middle-point” method reported in the literature. The unified master line was constructed with the treated data and curves according to the universal equation. The master line can be used to predict the long-term creep behavior and lifetime by extrapolating.
文摘The universal creep function is successful in relating the creep （ε） to the ageing time （ta）, coefficient of retardation time （β）, and intrinsic time （t0）. The relation was used to treat the creep experimental data for polystyrene （PS） specimens at a given aged time and different stress levels. Comparing with “middle-point” method reported in the literatures, β is found out by another method “polynomial fitting” in this work. Then unified master lines were constructed with the treated data and curves according to the universal equation. The master lines can be used to predict the long-term creep behaviour and lifetime by extrapolating to a required ultimate strain.
