Abstract
This article presents an experimental study, investigating the influence of different surface treatments on the performance of double-strap joints mating novel 3D-fiber-metal laminates (FML) adherends. The 3D-FML is made of 3D fiberglass fabric sandwiched in between thin layers of stainless-steel sheets (SSS). Carbon fiber-reinforced plastic straps and a structural epoxy resin are used to configure the double-strap bonded joints. Five different combinations of mechanical, chemical, and thermochemical surface preparations are considered for treating the SSS. The results indicate that the highest surface roughness is produced by grit-blasting followed by peel-ply coating; however, the optimal joint strength is obtained in the specimens that are treated with the less onerous alumina abrasive grit-blasting.
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