Interlocking 구조를 가지는 금속-복합소재 접합 특성에 관한 연구

초록

The bonding characteristics between the metal (aluminum alloy) and carbon fiber composite materials were analyzed when the interlocking structure on the bonding surface of the metal was formed artificially. The test specimens were manufactured as the single-lap-joint test type. The metal part of the specimen was manufactured using SLM technology, which is one of the metal 3D printing technologies, to produce an interlocking structure. The interlocking structure was fabricated on the metal bonding surface by repeating blocks of a rectangular cross-section at regular intervals. After laminating the composite material prepreg on the metal bonding surface, the final joint specimen was produced using an autoclave process. The single-lap-joint test was performed to obtain the adhesion strength, and the result was compared with the control group having a plane bonding surface. The results revealed an approximately 7.4 % improvement in adhesion strength. Numerical analysis was carried out to analyze the stress distribution of the bonding surface.

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