Characterization of Delamination Crack in Multidirectional E-glass/epoxy Composite under Mode I Loading

Yıl 2017, Cilt: 1 Sayı: 4, 117 - 128, 27.11.2017

Fatih Darıcık Züleyha Aslan

https://doi.org/10.26701/ems.341788

Cited By: 6

Öz

In this study, mode I critical strain energy release rate (G_Ic) of unidirectional
E-glass/epoxy was determined by double
cantilever beam (DCB) test. Calculated G_Ic
was used to initiate delamination in numerical models. The effect of stacking
sequence and fiber orientation of the sublaminates and the effect of thickness
on mode I delamination crack length and G_Ic
distribution along the specimen width in 0^o//0^o interface
have been studied using ANSYS^®. 3-D 8-node linear interface element
INTER 205 is used to create a predefined crack path. To investigate the fiber
orientation effect, composites with [+θ₂,
90₂, -θ₂, 0₂]_s stacking sequences were
modeled. Interlaminar fracture analyses were performed by Virtual Crack Closure
Technique (VCCT). Experimental and numerical critical loads (P_cr) showed a good agreement.
According to the results, while fiber orientation affects significantly the extended
crack length and the G_Ic
distribution along the specimen width, stacking sequence only affects the G_Ic distribution.

Anahtar Kelimeler

E-glass/epoxy, Double Cantilever Beam, Delamination, Mode I Fracture

Kaynakça

• Aoki, Y., Kondo, H., & Hatta, H. (2007). Effect of delamination propagation on mechanical behavior in compression after impact. 16th International Conference on Composite Materials. Kyoto, Japan.
• Shokrieh, M. M., Rajabpour-Shirazi, H., Heidari-Rarani, M., Haghpanahi, M. (2012). Simulation of mode I delamination propagation in multidirectional composites with R-curve effects using VCCT method. Computational Materials Science, 65, 66-73.
• Mathews, M. J., Swanson, S. R. (2007). Characterization of the interlaminar fracture toughness of a laminated carbon/epoxy composite. Composites Science and Technology, 67, 1489-1498.
• ASTM Standard D5528-01. (2001). Standard test method for mode I interlaminar fractre toughness of unidirectional continuous fiber reinforced polymer matrix composites. Philadelphia.
• Shokrieh, M. M., Heidari-Rarani, M. (2011). Effect of stacking sequence on R-curve behavior of glass/epoxy DCB laminates with 0o//0o crack interface. Materials Science and Engineering A, 529, 265-269.
• de Morais, A. B., de Moura, M. F., Marques, A. T., de Castro, P. T. (2002). Mode-I interlaminar fracture of carbon/epoxy cross-ply composites. Composites Science and Technology, 62, 5, 679-686.
• Sebaey, T. A., Blanco, N., Lopes, C. S., Costa, J. (2011). Numerical investigation to prevent crack jumping in double cantilever beam tests of multidirectional composite laminates. Composites Science and Technology, 71, 13, 1587-1592.
• Davidson, B. D., Krüger, R., König, M. (1996). Effect of stacking sequence on energy release rate distributions in multidirectional DCB and ENF specimens. Engineering Fracture Mechanics, 55, 4, 557-569.
• Prombut, P., Michel, L., Lachaud, F., Barrau, J. J. (2006). Delamination of multidirectional composite laminates at 0/ ply interfaces. Engineering Fracture Mechanics, 73, 16, 2427-2442.
• Shetty, M. R., Vijay Kumar, K. R., Sudhir, S., Raghu, P., Madhuranath, A. D., Rao, R. M. (2000). Effect of fibre orientation on mode-I interlaminar fracture toughness of glass epoxy composites. Journal of Reinforced Plastics and Composites, 19, 8, 606-620.
• Jimenez, M. A., Miravete, A. (2004). Application of the finite-element method to predict the onset of delamination growth. Journal of Composite Materials, 38, 1309-1335.
• Valvo, P. S. (2012). A revised virtual crack closure technique for physically consistent fracture mode partitioning. International Journal of Fracture, 173, 1, 1-20.
• Zhang, Y., Chryssanthopoulos, M. (2012). Modelling of mode I fracture behaviour of adhesively-bonded GFRP joints using virtual crack closure technique and cohesive zone method. 6th International Conference On Frp Composites In Civil Engineering, Rome.
• Bonhomme, J., Argüelles, A., Vina, J., Vina, I. (2009). Numerical and experimental validation of computational models for mode I composite fracture failure. Computational Materials Science, 45, 4, 993-998.
• Bonhomme, J., Vina, J., Argüelles, A., Vina, I., Mollon, V. (2013). Influence of the matrix toughness in carbon-epoxy composites subjected to delamination under modes I, II, and mixed I/II. Mechanics of Advanced Materials and Structures, 20, 8, 679-686.
• Beuth, J. L. (1996). Seperation of crack extension modes in orthotropic delamination models. International Journal of Fracture. 77, 4, 305-321.
• Rabinson, P., Hodgkinson, J. M. (2000). Interlaminar fracture toughness. J. M. Hodgkinson, Mechanical Testing of Advanced Fibre Composites. Abington, England: Woodhead Publishing Limited, p. 170-210.
• Camanho, P., Davila, C.G, de Moura, M. F. (2003). Numerical simulation of mixed-mode progressive delamination in composite materials. Journal of Composite Materials, 37, 16, 1415-1438.
• Raju, I. S., O'Brien, T. K. (2008). Fracture mechanics concepts, stress fields, strain energy release rates, delamination initiation and growth criteria. S. Sridharan, Delamination Behaviour of Composites. Abington, England: Woodhead Publishing Limited, p. 3-27.
• Shokrieh, M. M., Salamat-talab, M., Heidari-Rarani, M. (2014). Effect of initial crack length on the measured bridging law of unidirectional E-glass/epoxy double cantilever beam specimens. Materials & Design, 55, 605-611.
• Shokrieh, M. M., Heidari-Rarani, M., Ayatollahi M R. (2012). Delamination R-curve as a material property of unidirectional glass/epoxy composites. Materials & Design. 34: 211-218.
• Park, O., Sankar, B. V. (2002). Crack-tip force method for computing energy release rate in delaminated plates. Composite Structures. 55: 429-434.