Optical Determination of the Full Stress Tensor in Sheared Polymer Fluids

剪切聚合物流体中全应力张量的光学测定

• 批准号: 9109898
• 负责人: Wesley Burghardt
• 金额: $ 7万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-15 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9109898&HistoricalAwards=false
• 关键词: Optical; Determination; Full; Stress; Tensor

Under a Research Initiation Award, a novel birefringence technique will be explored for characterizing the properties of polymeric fluids. In particular, more accurate and reliable measurements will be obtained for the full stress tensor, including the second normal stress difference. The technique will be applied to several phenomena in entangled linear polymer solutions, such as for example oscillatory shear. Polymeric fluids, and their characterization, play an important role in a very broad range of materials processing techniques. Optimal processing conditions would be predictable with greater certainty with better materials characterization.

在研究启动奖，一种新的双折射， 技术将探讨表征性能 聚合物流体。尤其是更加准确可靠 将获得全应力张量的测量， 包括第二法向应力差。该技术 将应用于纠缠线性系统中的几种现象 聚合物溶液，例如振荡剪切。 聚合物流体及其特性， 在非常广泛的材料加工中发挥重要作用 技术.最佳加工条件是可预测的 具有更好的材料表征的更大确定性。