Development of a new fatigue test protocol and fatigue performance evaluation of Al-to-Al adhesive bond with GRIP MetalTM technology

NUCAP是一家总部位于安大略的私营公司。它开发了一种专利GRIP MetalTM技术，在金属表面产生一系列钩，以增强金属与粘合剂之间的粘合强度。该公司希望将其业务扩展到航空航天应用的轻质纤维金属层压板（FML）。然而，GRIP MetalTM粘接结构在循环载荷下的损伤容限是未知的，许多GRIP MetalTM配置需要一种方法来批量评估疲劳行为。本研究旨在探讨铝合金GRIP MetalTM中裂纹的存在和裂纹扩展以及GRIP MetalTM夹层结构在循环载荷作用下的粘接行为，同时开发一种批量疲劳试验方法，以便同时评估具有各种钩形配置的夹层结构。

NUCAP is a privately owned company with its headquarter in Ontario. It has developed a patented GRIP MetalTM technology to generate a series of hooks on metal surface in order to enhance bonding strength between metal and adhesives. The company wishes to expand its business into light weight fibre metal laminates (FML) for aerospace applications. However, the damage tolerance of the bonded structure with GRIP MetalTM under cyclic loading is unknown and numerous GRIP MetalTM configurations require a way to assess the fatigue behavior in a batch manner. This research is proposed to examine the presence of cracks and crack propagation in aluminum GRIP MetalTM and bonding behavior of GRIP MetalTM sandwiched structure after cyclic loading while at the same time develop a batch fatigue test method so that sandwiched structure with various hook configurations can be assessed in simultaneously