Browse > Article
http://dx.doi.org/10.7234/composres.2019.32.6.327

The Study on the Characteristics of Mode I Crack for Cross-ply Carbon/Epoxy Composite Laminates Based on Stress Fields  

Kang, Min-Song (Department of Aerospace Engineering, Chungnam National University)
Jeon, Min-Hyeok (Department of Aerospace Engineering, Chungnam National University)
Kim, In-Gul (Department of Aerospace Engineering, Chungnam National University)
Woo, Kyeong-Sik (School of Civil Engineering, Chungbuk National University)
Publication Information
Composites Research / v.32, no.6, 2019 , pp. 327-334 More about this Journal
Abstract
The delamination is a special mode of failure occurring in composite laminates. Several numerical studies with finite element analysis have been carried out on the delamination behavior of unidirectional composite laminates. On the other hand, the fracture for the multi-directional composite laminates may occur not only along the resin-fiber interface between plies known as interply or interlaminar fracture but also within a ply known as interyarn or intralaminar fracture accompanied by matrix cracking and fiber bridging. In addition, interlaminar and intralaminar cracks appear at irregular proportions and intralaminar cracks proceeded at arbitrary angle. The probabilistic analysis method for the prediction of crack growth behavior within a layer is more advantageous than the deterministic analysis method. In this paper, we analyze the crack path when the mode I load is applied to the cross-ply carbon/epoxy composite laminates and collect and analyze the probability data to be used as the basis of the probabilistic analysis in the future. Two criteria for the theoretical analysis of the crack growth direction were proposed by analyzing the stress field at the crack tip of orthotropic materials. Using the proposed method, the crack growth directions of the cross-ply carbon/epoxy laminates were analyzed qualitatively and quantitatively and compared with experimental results.
Keywords
Cross-ply composite laminates; Mode I; Delamination; Stress fields; Intralaminar crack;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Kang, M.S., Jeon, M.H., Kim, I.G., and Woo, K.S., "The Characteristics for Mode I Interlaminar and Intralaminar Fractures of Cross-ply Carbon/epoxy Composite Laminates Based on Energy Release Rate," Composites Research, Vol. 32, No. 1, 2019, pp. 6-12.
2 ASTM D5528-13, Standard Test Method for Mode I Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer Matrix Composites, ASTM International, West Conshohocken, PA, 2013.
3 ASTM D7905 / D7905M-14, Standard Test Method for Determination of the Mode II Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer Matrix Composites, ASTM International, West Conshohocken, PA, 2014.
4 Reeder, J.R., and Rews, J.H., "Mixed-mode Bending Method for Delamination Testing," AIAA Journal, Vol. 28, No. 7, 1990, pp. 1270-1276.   DOI
5 Borg, R., Nilsson, L., and Simonsson, K., "Simulating DCB, ENF and MMB Experiments Using Shell Elements and a Cohesive Zone Model," Composites Science and Technology, Vol. 64, No. 2, 2004, pp. 269-278.   DOI
6 Harper, P.W., and Hallett, S.R., "Cohesive Zone Length in Numerical Simulations of Composite Delamination," Engineering Fracture Mechanics, Vol. 75, No. 16, 2008, pp. 4774-4792.   DOI
7 Camanho, P.P., Davila, C.G., and De Moura, M., "Numerical Simulation of Mixed-mode Progressive Delamination in Composite Materials," Journal of Composite Materials, Vol. 37, No. 16, 2003, pp. 1415-1438.   DOI
8 De Morais, A., De Moura, M., Marques, A., and De Castro, P., "Mode-I Interlaminar Fracture of Carbon/epoxy Cross-ply Composites," Composites Science and Technology, Vol. 62, No. 5, 2002, pp. 679-686.   DOI
9 Anderson, T.L., Fracture Mechanics: Fundamentals and Applications, CRC Press, 2017.
10 Chalivendra, V.B., "Mode-I Crack-tip Stress Fields for Inhomogeneous Orthotropic Medium," Mechanics of Materials, Vol. 40, No. 4-5, 2008, pp. 293-301.   DOI
11 Krenk, S., "On the Elastic Constants of Plane Orthotropic Elasticity," Journal of Composite Materials, Vol. 13, No. 2, 1979, pp. 108-116.   DOI
12 Wei, Y., "A Stochastic Description on the Traction-separation Law of an Interface with Non-covalent Bonding," Journal of the Mechanics and Physics of Solids, Vol. 70, 2014, pp. 227-241.   DOI
13 De Moura, M., Campilho, R.D., Amaro, A., and Reis, P., "Interlaminar and Intralaminar Fracture Characterization of Composites under Mode I Loading," Composite Structures, Vol. 92, No. 1, 2010, pp. 144-149.   DOI