The Role of Volume Changes in the "Yield-Like" Behavior of Structural Polymers

研究了聚合物非线性时变本构响应的基本问题。注意力集中在时间依赖的失效分析和聚合物的体积（体）响应。这些研究影响着工程设计、聚合物加工、制造和物理老化的耐久性确定。这些研究是用聚碳酸酯或聚氯乙烯等非晶态聚合物进行的，这避免了两相材料的复杂性，也简化了技术转让。

The fundamental aspects of the nonlinear time-dependent constitutive response in polymers are studied. Attention is focused on time dependent failure analysis and the volumetric (bulk) response of polymers. These studies affect the durability determination of engineering designs as well as polymer processing, manufacturing and physical aging. The studies are conducted with amorphous polymers such as polycarbonate or polyvinylchloride which avoid the complications with two-phase materials and which also ease technology transfer.