GOALI: Impact Response and Failure of Bio-Composites

GOALI：生物复合材料的冲击响应和失效

• 批准号: 0800254
• 负责人: Alan Argento
• 金额: --
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-07-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0800254&HistoricalAwards=false
• 关键词: GOALI; Impact; Response; Failure; Bio

This GOALI project is a collaboration with Ford Motor Company on the mechanical impact performance and energy absorption capabilities of composite materials formulated from natural fibers embedded in synthetic and natural polymeric binding resins. The goal is to develop understanding of the energy dissipation and failure mechanisms of these bio-composites at the micromechanical level, for the purpose of increasing their use in impact safety applications. Various natural materials will be treated in the research including bast, prairie grass and cellulose fibers, and soy based resin. Composite formulations of the materials will be manufactured and laboratory tested to determine their mechanical response and fracture characteristics when impacted at high rate. Based on the test results and scanning electron microscopy of test samples, a micromechanical finite element model will be developed to investigate the relationships between failure mechanisms, energy dissipation mechanisms, and material design of these bio-composites.The successful completion of the research will yield a general understanding of the impact response and failure behavior of bio-composites, facilitating their design for impact safety applications. These materials could serve as replacements of traditional glass/vinyl ester composites in an increased range of applications, and offset some of the petroleum consumed in the manufacture of the traditional composites. General knowledge will result on high rate measurement techniques, appropriate interpretation of the resulting data, its connection to energy absorbing behavior and micromechanical modeling techniques for impact processes.

该 GOALI 项目是与福特汽车公司合作研究由嵌入合成和天然聚合物粘合树脂的天然纤维配制而成的复合材料的机械冲击性能和能量吸收能力。目标是在微机械水平上加深对这些生物复合材料的能量耗散和失效机制的了解，以增加其在冲击安全应用中的使用。研究中将处理各种天然材料，包括韧皮、草原草和纤维素纤维以及大豆树脂。将制造材料的复合配方并进行实验室测试，以确定其在高速冲击时的机械响应和断裂特性。根据测试结果和测试样品的扫描电子显微镜，将开发一个微机械有限元模型，以研究这些生物复合材料的失效机制、能量耗散机制和材料设计之间的关系。该研究的成功完成将产生对生物复合材料的冲击响应和失效行为的总体了解，有助于其冲击安全应用的设计。这些材料可以在更多的应用中替代传统的玻璃/乙烯基酯复合材料，并抵消传统复合材料制造过程中消耗的部分石油。一般知识将导致高速测量技术、对结果数据的适当解释、其与能量吸收行为的联系以及冲击过程的微机械建模技术。