각도에 따른 탄소 섬유 강화 플라스틱 샌드위치의 압축 특성에 대한 해석 및 검증

Abstract

CFRP composites have high specific strength, specific stiffness, long fatigue life, light weight environmental safety characteristics. Hence, these composites are widely used in various industrial areas such as airlines, defense, automobiles, and sports. In this study, the mechanical properties are investigated through the compressive simulation analysis on the carbon fiber reinforced plastic sandwich. The experiment is carried out with the same condition as the analysis to verify the analysis result. One sandwich plate is composed with four layers. From the upper, this plate has the first, second, third and fourth layers due to the arrangement of angle direction. A plate has the symbol of [0/30/30/0] as the first, second, third and fourth layers due to the angle directions of 0°, 30°, 30° and 0°. There are the plates of [0/30/30/0], [0/60/60/0] and [0/90/90/0] in this study. The maximum compressive load becomes 53.139kN during the compression time of 12 sec in case of the plate of [0/30/30/0]. The maximum compressive load becomes 61.826kN during the compression time of 12 sec in case of the plate of [0/60/60/0] due to the layers with angle directions of 0°, 60°, 60° and 0°. The maximum compressive load becomes 53.002kN during the compression time of 12 sec in case of the plate of [0/90/90/0] due to the layers with angle directions of 0°, 90°, 90° and 0°. So, the plate of [0/60/60/0] endures the most load among three plates. The result of this study can be applied practically through the validation of experimental data on the simulation data. In this study, the mechanical characteristics are examined systematically through the impact analysis on the composite material of the carbon fiber reinforced plastic with aluminum foam by using the impact absorption due to CFRP plate.