Abstract
The interfacial connection of metal and reinforced plastic is very critical for lightweight manufacturing in electronics, automotive, and aerospace industry. The design freedom offered by 3D printing has been leveraged in this work to fabricate lattice structures over metal substrate, to be used as mechanical interlocking between the polymer resin and metal during injection molding process. In this study, different lattice structures were first designed in a CAD environment and the strength of the subsequent lattice-resin interlock was predicted using the Finite Element Analysis (FEA) method. Individual stress status of lattice and resin during tensile test were investigated to determine the failure strength of lattice-resin interlock. FEA predicted failure strength was correlated with the experimental result with reasonable deviations.
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