Abstract

With the wide application of fiber-reinforced composite material in aero-structures and mechanical parts, composite joint have become a very important research area because they are often the weakest sites in composite structures. In this paper, the failure strengths of the bolted joint and pin joint which have variable hole clearance were evaluated and compared. From the tests, the first failure loads of the bolted joint and pin joint with 880 ㎛ hole clearance have decreased by 24.2 % and 51.3 % compared to those of joints with 0 ㎛ hole clearance, respectively. Also, the failure index of the joints were calculated by the finite element method and compared with experimental results.

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