Linking Process-Induced Properties to Thermoplastic-Matrix Woven-Fabric Composites Performance

将工艺引起的性能与热塑性基体机织织物复合材料的性能联系起来

• 批准号: 0522923
• 负责人: James Sherwood
• 金额: --
• 依托单位: University of Massachusetts Lowell
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-15 至 2010-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0522923&HistoricalAwards=false
• 关键词: Linking; Process; Induced; Properties; Thermoplastic

The objective of this research is to utilize an integrated analytical, experimental and numerical effort to attain a fundamental understanding of two governing physical phenomena - interlayer (fabric-fabric) friction and interconnected through-thickness and in-plane compaction. Modeling of the in-service performance of thermoplastic-matrix woven-fabric reinforced structural composites - e.g., damage tolerance, crashworthiness, vibration - is currently inadequate for parts of any geometric complexity because of the inability of existing performance models to capture the true deformed material properties. The key to taking advantage of the reduced weight and potentially increased occupant safety that these composites can offer is to provide a direct link between part geometry, material selection, process conditions, process-induced local properties, and part performance, thereby allowing informed feedback to the design process. The capabilities of the predictive model will be demonstrated by considering a prototype part from design conception, to manufacturing under a set of prescribed conditions, through seamlessly examining its in-service performance. This research is being cosponsored by the DOE Freedom Car Project. The availability of a predictive model that can be widely used by industry will facilitate the greater use of lightweight composite materials in the automotive industry, increasing fuel-efficiency without sacrificing safety. In coordination with the overall theme of processing-structure-performance interrelations, outreach efforts are planned to develop new sessions on "Design, Fabrication, and Testing of Braided Composite Baseball Bats" for grade 8-10 participants in the extremely successful UMass-Lowell Design Camp. A similar summer-session collaboration with Cislunar Aerospace, Inc. is planned for introducing girls to science and engineering through examples of aerodynamics in sports. In addition, all undergraduate and graduate students in this project will have the opportunity for extensive interactions with our industry (Ford, GM) and international (Belgium, UK, France) partners.

这项研究的目的是利用综合的分析，实验性和数值努力来获得对两种管理物理现象的基本理解 - 层间摩擦（织物 - 织物）摩擦，并互连通过厚度和平面上的压实。 当前，由于现有性能模型无法捕获真实的变形材料属性，因此，热塑性 - 摩trix机织制的结构复合材料（例如，损伤耐受性，耐撞击，振动，振动）的建模目前不足以进行任何几何复杂性。利用这些复合材料可以提供的减轻体重和潜在增加的乘员安全性的关键是提供零件几何，材料选择，过程条件，过程诱导的本地特性和部分性能之间的直接联系，从而允许对设计过程的知情反馈。通过考虑设计概念的原型部分到在一系列规定条件下制造的原型部分，通过无缝检查其在服务的绩效，可以证明预测模型的功能。 这项研究是由DOE自由汽车项目共同发起的。 可以通过行业广泛使用的预测模型的可用性将有助于在汽车行业中更多地使用轻型复合材料，从而提高燃油效率而不牺牲安全性。为了与处理绩效相互作用的总体主题协调，计划在非常成功的UMass-Lowell Design Camp中为8-10年级的参与者开发有关“设计，制造和测试编织的复合棒球棒”的新会议。与Cislunar Aerospace，Inc。进行的类似夏季课程合作计划通过运动中的空气动力学示例向女孩介绍科学和工程。此外，该项目中的所有本科生和研究生都将有机会与我们的行业（福特，通用汽车）和国际（英国，英国，法国）合作伙伴进行广泛的互动。