Modeling and Validation of AM Metals/CFRP Joints Based on Patterned Surfaces and Fibers Engagement

Abstract

The fabrication of co-cured metal/CFRP joints offers some relevant advantages as the elimination of adhesives and the simplification of building process. In this view, the additive manufacturing (AM) of metal parts is suitable for expanding the potentialities of co-cured AM metal/CFRP joints where patterned surfaces are introduced. This paper presents a methodology to fabricate the joint, based on matrix patterns of 3D features on the metal surface, which is able to improve the polymer matrix adhesion and to provide carbon fibers engagement. Both FEM simulations and experiments show significant enhancement of the global mechanical strength.