Advanced Polymeric Materials: Process Induced Internal Stresses in Laminated Polymer Composites

先进聚合物材料：层压聚合物复合材料中工艺引起的内应力

• 批准号: 9101648
• 负责人: James Seferis
• 金额: $ 15.3万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-15 至 1995-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9101648&HistoricalAwards=false
• 关键词: Advanced; Polymeric; Materials; Process; Induced

This research is to develop both experimental and analytical methods to determine internal stresses induced in laminated composite structures during processing. Through these internal stress characterizations, a methodology will be developed that can provide a basic understanding for controlled processing and performance of composites. Both thermosetting and thermoplastic polymer matrices reinforced with continuous fibers, that are potential candidates for structural materials in the electric power industry, will be examined using well established as well as novel lamination processes. As an integral part of this study, several process monitoring techniques will be evaluated; these techniques could also be used for on-line, long term durability monitoring. Internal stress analysis will be studied on macroscopic as well as microscopic (micro-mechanical) scale considering both time dependent (kinetic) and time independent (thermodynamic) effects. Through the experimental and analytical approach, an attempt will be made to characterize composite system molecular and morphological structural features that are influenced and/or give rise to the internal stresses developed during processing, leading to full property characterization. It is anticipated that the results derived from this study, in conjunction with previous developments, will provide a basic methodology for process analysis of laminated composites that may also provide fundamental information in screening new materials and processes for load bearing structural application of composites in real manufacturing operations focused on the needs of the electric power industry.

这项研究是开发实验和分析方法，以确定加工过程中层压复合结构中诱导的内部应力。 通过这些内部压力特征，将开发一种方法，该方法可以为复合材料的受控处理和性能提供基本的理解。 将使用良好的层压和新型的层压过程检查热塑料和热塑性聚合物矩阵，它们是电力工业中潜在的结构材料的潜在候选者。 作为本研究不可或缺的一部分，将评估几种过程监测技术。 这些技术也可以用于在线，长期耐用性监视。 考虑到时间依赖（动力学）和时间无关（热力学）效应，将研究内部应力分析在宏观和微观机械量表上。 通过实验和分析方法，将尝试表征复合系统分子和形态结构特征，这些结构特征受到影响和/或产生加工过程中产生的内部应力，从而导致完整的性质表征。 可以预计，从这项研究中得出的结果以及以前的发展将为层压复合材料的过程分析提供基本方法，这些方法也可能在筛选新材料和过程中提供基本信息，以实现载荷轴承在实际制造业务中的结构应用，该材料的结构应用于真实的制造业务中，该材料的重点是电力行业的需求。