Measurement of Strength-Related Micro-Stress Distribution in Fiber/Matrix/Interphase Systems

纤维/基体/相间系统中与强度相关的微应力分布的测量

• 批准号: 9115380
• 负责人: Kenneth Reifsnider
• 金额: $ 5.66万
• 依托单位: Virginia Polytechnic Institute and State 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: 1991-08-15 至 1993-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115380&HistoricalAwards=false
• 关键词: Measurement; Strength; Related; Micro; Stress

The objectives of this research are to validate current and proposed composite micromechanical models by direct experimental measurements and to determine the resulting stress state near damaged regions in materials subjected to tensile, compressive, and bending loads. This will be accomplished with a unique test methodology which employs a geometrically scaled up version of an polymeric composite containing embedded sensors. These sensors provide a direct and systematic approach to measure strain redistribution in a material and provides previously unobtainable baseline data which are essential in validating existing models and developing new ones.

本研究的目的是通过直接实验测量来验证当前和提出的复合材料细观力学模型，并确定材料在拉伸、压缩和弯曲载荷作用下损伤区域附近的应力状态。这将通过一种独特的测试方法来实现，该方法采用了包含嵌入式传感器的聚合物复合材料的几何放大版本。这些传感器提供了一种直接和系统的方法来测量材料中的应变再分布，并提供了以前无法获得的基线数据，这些数据对于验证现有模型和开发新模型至关重要。