Indentation methodologies for extraction of Visco- elastic Characteristics of Polymers

该项目将与AWE合作进行，该组织对一种新的测试方法感兴趣，该方法用于在长时间使用和/或暴露于苛刻的环境条件后监测材料性能。近年来，戈登实验室开发了一个软件包SEMPID（Software for Extraction of Material Properties from Indentation Data），它包括塑性参数的估算和蠕变的表征方法。这项工作将扩展到探索的潜力，询问的时间依赖性（粘弹性）的聚合物材料（填充，未填充和发泡）在一定范围内的温度和应变速率的性能。该项目将开发新的方法来识别压痕结果，压痕过程的迭代（FEM）建模，评估预测和观察结果之间的一致性水平，以及属性参数值的最佳拟合组合的收敛。

This project will carried out with AWE, the organization is interesting in a new test method for monitoring material properties after extended periods in service and/or exposure to demanding environmental conditions. SEMPID (Software for the Extraction of Material Properties from Indentation Data) package with evaluation of plasticity parameter and approaches for characterization of creep has been developed by Gorden Laboratory in recent years. This work will extend to explore the potential for interrogating the time-dependent (viscoelastic) properties of polymeric materials (filled, unfilled and foamed) over a range of temperature and strain rate. The development of new approaches to identification of indentation outcomes, iterative (FEM) modelling of the indentation process, evaluation of agreement levels between predicted and observed outcomes, and convergence on best fit combination of property parameter values will be carried out by this project.