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Effect of Moisture Absorption and Fiber Ply Orientation for Artificial Hip Joint on the Mechanical Properties of Carbon/PEEK Composites

The purpose of this study is to determine the correct estimation of the mechanical property between epoxy resin and PEEK sheet as the composites and its validity has been tested with the alternative materials of the metal-based materials for artificial hip joint. Moreover, this work evaluated the mechanical properties according to the moisture absorption and the fractured surfaces of Carbon/Epoxy and Carbon/PEEKcomposites were also evaluated. First, the specimens for the Carbon/PEEK and Carbon/Epoxy composites manufactured with the ASTM standard. The specimens immersed in distilled water at 37°C during 100 days and the coefficient of moisture was measured in according tothe Fick's law. In addition, this work evaluated the fracture energy according to the fiber ply orientation. As a result, the coefficient ofmoisture-absorption of Carbon/PEEK composites was the lowest because the interface coherence with the fiber and resin are the most strong. Also, the fracture energy of the Carbon/PEEK composites was more excellent than the Carbon/Epoxy composites.