Inelastic Mixed-Mode Debonding at Bimaterial Interfaces

本文的目的是通过实验和数值方法研究沿双材料界面扩展的混合模式裂纹的非弹性效应。在复合材料中，这种裂纹扩展主导着粘结破坏和纤维/基体界面破坏。具体而言，本研究将有助于更好地理解粘接接头的可靠性和复合材料的分层失效。在过去的15年里，由于缺乏明确的实验数据，理论学者和数值分析学者有理由对各自模型在界面裂缝问题上的优劣进行争论。这项研究将提供缺失的数据和许多理论猜想的答案。＊＊＊

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. ***