Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Impact Damage Behavior of CF/Epoxy Composite Laminates

CF/Epoxy적층판의 충격손상거동에 관한 연구

  • Im, Gwang-Hui (Dept.of Semiconductor Electric Automotive Engineering, Woosuk University) ;
  • Sim, Jae-Gi (Dept.of Mechanical Engineering, Chosun University) ;
  • Yang, In-Yeong (Dept.of Mechanical Engineering, Chosun University)
  • 임광희 (우석대학교 반도체전기자동차공학부) ;
  • 심재기 (조선대학교 기계공학부) ;
  • 양인영 (조선대학교 기계공학부)
  • Published : 2002.05.01
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Abstract

In this paper, static and fatigue bending strengths and failure mechanisms of CFRP (carbon fiber reinforced plastics) laminates having impact damages have been evaluated. Composite laminates used for this experiment are CF/EPOXY orthotropy laminated plates, which have two-interfaces $[0^0_ 4/90^0_4]_{ sym}$. A steel ball launched by the air gun collides against CFRP laminates to generate impact damages. The damage growth during bending fatigue test is observed by the scanning acoustic microscope (SAM) and also, the fracture surfaces were observed by using the SEM (scanning electron microscope). In the case of impacted-side compression, fracture is propagated from the transverse crack generated near impact point. On the other hand, fracture is developed toward the impact point from the edge of interface-B delamination in the case of impacted-side tension. Eventually, failure mechanisms have been confirmed based on the observed delamination areas and fracture surfaces.

Keywords

References

  1. 出中吉え助, 黑川知明ら, 1989, '橫衝擊を 受ける CFRP板の損傷と殘留曲け强度,' 日本航空宇宙學會誌 第37券 第25號, pp. 29-36
  2. 신형섭, 김진환, 오상엽, 2001, '취성재료의 펀칭가공을 위한 충격장치개발 및 펀치기구해석,' 대한기계학회(A), Vol. 25, No. 4, pp. 629-636
  3. MA, C.C.M., HUANG, Y.H. and CHANG, M.J., 1991, 'Hygrothermal Effect on the PEEK/C.F. and PP.S/C.F. under Impact Loading(I),' ANTEC, pp. 2029-2096
  4. 武田 展雄, '複合材料の 衝擊應答と 破壞(I),' 日本複合材料學會誌, 11,4, pp. 151-161
  5. Challenger, K.D., 1986.6, 'The Damage Tolerance of Carbon Fiber Reinforced Composites,' A Workshop Summary, Composites Struct., pp. 295-318 https://doi.org/10.1016/0263-8223(86)90025-5
  6. Ishai, O. and Shargi, A., 1990, 'Effect of Impact Loading on Damage and Residual Compressive strength of CFRP Laminated Beams,' Composites Struct., 14-4, pp. 319-337 https://doi.org/10.1016/0263-8223(90)90013-5
  7. 駒井, 箕島, 木下, 小川, 黑田, 1990, 'CFRPの疲勞損傷の超音波顯微鏡フラクトグラフイと 層間はく進展抵抗,' 材料, 39-438, pp. 271-276
  8. Bakis, C.E and. Stinchcomb, W.W.(Hahn H.H. 編), 'Response of Thick,Notched Laminates Subjected To Tension-Compression Cycle Loads,' Composite Materials : Fatigue and Fracture, ASTM STP, 907, pp. 314-438 ASTM
  9. Sohn, M.S, Hu, X.Z., Kim, J.K. and Walker, L., 2000, 'Impact Damage Characterization of Carbon Fibre/epoxy Composites with Multi-layer Reinforcement,' Composites B, Vol. 31, pp. 681-691 https://doi.org/10.1016/S1359-8368(00)00028-7
  10. Im, K.H. and Yang, I.Y., 1996, 'Damage Behavior and Residual Bending Strength of CFRP Composite Laminates Subjected to Impact Loading,' Trans. of KSME(A), Vol. 20, No. 6, pp. 1836-1842
  11. Im, K.H., Kim, S.K. and Yang, I. Y., 1990, 'Impact Damage and Hygrothermal Effects on Fatigue Bending Strength of Orthotropy Composite Laminates,' KSME Int. Journal, Vol. 13, No. 7, pp. 524-535
  12. Im, K.H., Kim, J.H. and Yang, I.Y., 1998, 'A Study on Residual Fatigue Bending Strength and Damage Behavior of CFRP Composites Subjected to Impact Loading,' KSME Int. Journal, Vol. 12, No. 1, pp. 50-57 https://doi.org/10.1007/BF02946533
  13. Smith, B. W. and Grove, R. A., 1987, 'Determination of Crack Propagation Directions in Graphite/Epoxy Structures,' Composites and Metals, ASTM. STP. 948, pp. 154-173
  14. Malvern, L.E., Sun, C.T. and Liu, D., 1989, 'Delamination Damage in Central Impacts at Subperformation Speeds on Laminated Kevlar/EPOXY Plates,' ASTM. STP. 1012, pp. 387-405

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