Toughening Mechanisms in Mixed-Mode Interfacial Fracture

本研究将采用分析、计算和实验（ACE）相结合的研究方法，研究随着剪切的增加，双材料界面裂缝的产生。在玻璃/环氧树脂界面增韧的潜在机制的相对重要性将被检查，采用单一试样受到双轴载荷。测量施加的位移、相应的反应和正常的裂缝张开位移。这项工作有望增加我们对与混合模式界面裂纹萌生有关的各种增韧机制的理解。这样的理解将有助于合理设计或定制复合材料、微电子器件、涂层和粘合接头中的界面

This research will - by the use of a combined analytical, computational and experimental (ACE) study - investigate the initiation of cracks along bimaterial interfaces with increasing shear. The relative importance of potential mechanisms in the toughening of a glass/epoxy interface will be examined, employing a single specimen subjected to biaxial loads. Measurements of applied displacements, corresponding reactions, and normal crack opening displacements will be made. This work is expected to increase our understanding of the various mechanisms of toughening that are associated with mixed- mode interfacial crack initiation. Such an understanding could lead to a rational design or tailoring of interfaces in composite materials, microelectronic devices, coatings and adhesively bonded joints.***//