Fatigue Characterization Of AlSi10Mg Alloy From Variable L-PBF Processing Parameters Addressed To Hybrid Joints Of Aerostructures

Joining technologies in aviation ares considered as a backbone. Traditional mechanical methods, like rivets and fasteners add weight, require complex assemblies, and can damage the configuration of composites such as continus fibre breakage during handling. These challenges highlight the need for alternative solutions. The EU-funded MIMOSA project proposes a novel approach for joining metal (AlSi10Mg from Additive Manufacturing, AM) and CFRP, addressing these limitations. The proposed technology focuses on the implementation of mechanical interlocking mechanism between CFRP and 3D metal anchors based on AM (patented design and manufacturing process). The AM process associated with heat treatmens requires customized fatigue characterization of the material to measure the S-N curves as function of some fundamental fabrication parameters (part orientation, surface finishing and heat treatment). This study reports the experimental results of the fatigue tests to assess the feasibility of producing the innovative multi-material joints proposed.