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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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 Abstract
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.
 Keywords
CFRP Laminates;Energy Release Rate;Delamination;Probabilistic Analysis;Arrest Toughness;
 Language
Korean
 Cited by
1.
탄소섬유강화 복합재의 열전도율 평가에 관한 연구,임재규;송준희;최창호;

대한기계학회논문집A, 2002. vol.26. 3, pp.553-559 crossref(new window)
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