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An Analysis for Delaminations Using Energy Release Rate in CFRP Laminates
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 Title & Authors
An Analysis for Delaminations Using Energy Release Rate in CFRP Laminates
Gang, Gi-Won; Kim, Jeong-Gyu;
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The understanding of impact-induced delamination is important in safety and reliability of composite structure. In this study, a model for arrest toughness is proposed in consideration of fracture behavior of composite materials. Also, the probabilistic model is proposed to describe the variability of arrest toughness due to the nonhomogeneity of material. For these models, experiments were conducted on the Carbon/Epoxy composite plates with various thickness using the impact hammer. The elastic work factor used in J-Integral is applicable to the evaluation of energy release rate. The fracture behavior can be described by crack arrest concept and the arrest toughness is independent of the delamination size. Additionally, a probabilistic characteristics of arrest toughness is well described by the Weibull distribution function. A variation of arrest toughness increases with specimen thickness.
CFRP Laminates;Energy Release Rate;Delamination;Probabilistic Analysis;Arrest Toughness;
 Cited by
탄소섬유강화 복합재의 열전도율 평가에 관한 연구,임재규;송준희;최창호;

대한기계학회논문집A, 2002. vol.26. 3, pp.553-559 crossref(new window)
Abrate, S., 1991, 'Impact on Laminated Composite Materials,' Applied Mechanics Rev. Vol. 44, no. 4, pp. 155-190

Maikuma, H., Gillespi. Jr, J. W. and Whitney, J. M., 1989, 'Analysis and Experimental Characterization of the Center Notch Flexural Test Specimen for Mode II Interlaminar Fracture,' J. of Composite Materials, Vol. 23, August, pp. 757-785

Xiao, X.R. and Vu-Khanh, 1993, 'Effects of Remolding on Fracture Performance of APC-2 Composites: Mode-I Initiation, Propagation and Arrest Toughness,' J. of Thermoplastic Composite Materials, Vol. 6, October, pp. 323-341 crossref(new window)

Rhee, K. Y. and Ernst, H.A., 1992, 'Method for Computing Energy Release Rate Using the Elastic Work Factor Approach,' J. of Composite Materials, Vol. 26, no. 14, pp. 2029-2043

심봉식, 성낙원, 옹장우, 1991, '탄소섬유/에폭시 복합재료의 잔류강도 저하 해석에 의한 피로수명 평가,' 대한기계학회논문집 A권, 제15권, 제6호, pp. 1908-1918

Kress, G. R. and Stinchcomb, W. W., 1985, 'Fatigue Response of Notched Graphite/Epoxy Laminates,' ASTM STP 864, pp. 173-196

Wang, H. and Vu-khanh, T., 1995, 'Fracture mechanics and mechanisms of impack-induced delamination in laminated composites,' J. of Composite Materials, Vol. 29, no. 2, pp. 157-178

김정규, 강기원, 1999, '평직 Glass/Epoxy 복합재료의 충격손상거동과 잔류강도평가,' 대한기계학회논문 A권, 제23권, 제2호, pp. 294-303

Grady, J.E. and Sun, C.T., 1988, 'Dynamic Delamination Fracture Toughness of a Graphite/Epoxy Laminate under Impact,' Composite Science and Technology, Vol. 31, pp. 55-72 crossref(new window)

ASTM D 3039-93, 'Standard Test Method for Tensile Properties of Fiber Resin Composite'

Wang, H. and Vu-khanh, T., 1994, 'Damage Extension in Carbon Fiber/PEEK Crossply Laminates under Low Velocity Impact,' J. of Composite Materials, Vol. 28, No. 8, pp. 685-706