샌드위치 라미네이트 스킨의 충격 후 압축강도 예측을 위한 분석 모델 연구
Analysis Model for Prediction of Compressive Strength After Impact of Sandwich Laminate Skin
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초록
Impact damage tolerance is an important design requirement for composite structures. In this study, the effect of post impact damage and hole size of the composite sandwich skin / sandwich with core specimen on compressive strength of the laminate was analyzed. Three specimen tests were performed in this research. Two tests were carried out on pure bending test specimens subjected to impact damage to the skin and specimen with a hole in one of its skin as a damage. Through this test, we compared the reduction of compressivestrength due to the size of skin damage and the size of the hole. Also, core-free specimen with an open hole under uniaxial loading were tested to produce reference data for comparison with the series tested earlier. As results of the tests, the sandwich beams with damage size and open hole are almost identical, and we concluded that the prediction of compressive strength reduction after impact of the sandwich skin structure can be predicted using an analytical model assuming skin open hole as impact inputs.
Abstract
Impact damage tolerance is an important design requirement for composite structures. In this study, the effect of post impact damage and hole size of the composite sandwich skin / sandwich with core specimen on compressive strength of the laminate was analyzed. Three specimen tests were performed in this research. Two tests were carried out on pure bending test specimens subjected to impact damage to the skin and specimen with a hole in one of its skin as a damage. Through this test, we compared the reduction of compressivestrength due to the size of skin damage and the size of the hole. Also, core-free specimen with an open hole under uniaxial loading were tested to produce reference data for comparison with the series tested earlier. As results of the tests, the sandwich beams with damage size and open hole are almost identical, and we concluded that the prediction of compressive strength reduction after impact of the sandwich skin structure can be predicted using an analytical model assuming skin open hole as impact inputs.
참고문헌 (9)
- Sun, C.T., "Failure loads for notched graphite", epoxy laminates with a softening strip, 1985, pp.27, 121~133
- Guynn, G., "A detailed Investigation of the micromechanisms of compressive failure in open hole composite laminates", J. of Composite Materials, 23, pp.479~504 (1989)
- Lekhnitskli, G., "Anisotropic Plates", pp.171~190 (1968), Gordon and Breach Science Publishers
- Lessard, L., "Damage tolerance of laminated composites containing an open hole and subjected to compressive loadings", J. of Composite Materials, 25, pp.44~64 (1991)
- Chang, F.K., "Strength of Mechanically Fastened Composite Joints", J. of Composite Materials, 16, pp.470~494 (1982)
- Whitney, J.M., "Stress Fracture Criteria for Laminated Composites Containing Stress Concentrations", J. of Composite Materials, 8, pp.253~265 (1974)
- Soutis, C., "Failure Prediction Technique for Compression Loaded in Carbon Fibre-epoxy Laminate with Open Hole", J. of Composite Materials, 25, pp.1476~1498 (1991)
- Park, Seung Bum, "An Experimental Study of Impact Behavior and Impact Damage of Sandwich Pannels", Jou. of Korean Soc. of Mechanical Technology, 3(2), pp.151~517 (2001)
- 고등, "탄소 섬유 강화 플라스틱 샌드위치 복합재료의 충격특성에 관한 연구", 한국기계기술학회지, 16(2), pp.1339~1344 (2014), 한국기계기술학회[DOI]