Inelastic Mixed-Mode Debonding at Bimaterial Interfaces

双材料界面处的非弹性混合模式脱粘

• 批准号: 8813822
• 负责人: Kenneth Liechti
• 金额: $ 14.37万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-15 至 1991-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8813822&HistoricalAwards=false
• 关键词: Inelastic; Mixed; Mode; Debonding; Bimaterial

The objective of this proposal is to examine experimentally and numerically the inelastic effects in mixed-mode crack growths along bimaterial interfaces. Such crack growth dominates adhesive failure and fiber/matrix interfacial failure in a composite. Specifically, this study will lead to a better understanding of the reliability of adhesive joints and delamination failures of composite materials. The lack of definitive experimental data has provided the excuse for the theoreticians and numerical analysts to argue over the relative merits of their models on the interfacial crack problem for the past decade and half. This study will provide the missing data and the answers to the many theoretical conjectures. ***

本提案的目的是通过实验和 数值模拟了混合型裂纹扩展中的非弹性效应沿着 双材料界面 这种裂纹扩展主导了粘接失效 以及复合材料中纤维/基体界面失效。 具体地说， 这项研究将有助于更好地了解 粘接接头和复合材料的分层失效。 缺乏明确的实验数据为 理论家和数值分析师争论相对于 评述了以往界面裂纹模型的优点 十五年了 本研究将提供缺失数据和 回答了许多理论问题。***