Abstract
In this paper, multilayer plain weft knitted glass fabric reinforced epoxy composite laminates with different stacking configurations, i.e., [0°]4, [0°/±45°/0°], [0°/90°/90°/0°] and [90°]4, were investigated experimentally. The laminates were uniaxially tensile loaded until final fractures occurred. The experimental results show that with the change in layer stacking structure, a corresponding variation in composite strength and stiffness was achieved. The tensile strength and modulus rank as follows: [0°]4 > [0°/±45°/0°] > [0°/90°/90°/0°] > [90°]4, which implicates a potential desiguability of Knitted Fabric Composites (KFC) for engineering applications. Failure behaviours of the fractured laminate specimens were examined using a ‘matrix digestion and layer peeling’ method, based on which the behaviour of each lamina in the laminate can be clearly shown. It was found that an angle-plied lamina in the laminate when subjected to a uniaxial tensile load has a different fracture mode from that of a single ply composite under an off-axial tensile load. This means that the lamina in the laminate is subjected to a more complicated load combination. By comparing the fractured mode of the latter lamina with that of the single ply composite, the load direction sustained by the lamina in the laminate can be identified, which provides a qualitative benchmark for verifying a theoretical simulation.
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References
Chou, T. W., Textile Structure Composites (Composite Materials Series, Vol. 3), Elsevier, Amsterdam, 1989.
Ko, F. K., Van Vuure, A. W., and Balonis, R. J., 'Textile Preforming for Complex Shape Structural Composites', SAMPE Journal 35(3), 1999.
Ramakrishna, S., 'Characterization and Modeling of the Tensile Properties of Plain Weft-knit Fabric-reinforced Composites', Composite Science and Technology 57, 1997, 1-22.
Leong, K. H., Ramakrishna, S., Bibo G. A., and Huang, Z. M., 'The Potential of Knitting for Engineering Composites-a Review', Composites A 31(3), 2000, pp. 197-220.
Gommers, B., Verpoest I., and Van Houtte, P., 'Modeling the Elastic Properties of Knittedfabric-reinforced Composites', Composite Science and Technology 56, 1996, 685-694.
Epstein, M. and Nunni, S., 'Near Net Shape Knitting of Fibre Glass and Carbon for Composites', in 36th International SAMPE Symposium, 1991, p. 102.
Ramakrishna S. and Hull, D., 'Energy Absorption Capacity of Epoxy Composite Tubes with Knitted Carbon Fiber Fabric Reinforcement', Composite Science and Technology 49, 1993, 349-356.
Ramakrishna, S., Hamada, H., Rydin, R., and Chou, T. W., 'Impact Damage Resistance of Knitted Glass Fiber Fabric Reinforced Polypropylene Composite Laminates', Science and Engineering of Composite Materials 4(2), 1995, 61-72.
Huang, Z.-M., Ramakrishna, S., et al., 'Characterization of a Knitted Fabric Reinforced Elastomer Composites', Journal of Reinforced Plastics and Composites 18(2), 1999, 118-137.
Khondker, O. A., Leong K. H., and Herszberg, I., 'An Investigation of the Structure-property Relationship of Knitted Composites', Journal of Composite Materials 35(6), 2001, p. 489.
Ramakrishna S. and Hull, D., 'Tensile Behaviour of Knitted Carbon-fibre-fabric/Epoxy Laminates-Part I: Experimental', Composite Science and Technology 50, 1994, 237-247.
Kelay, M. S., Bader, D. L., and Reed, P. E., 'Mechanical Deformation Mechanisms in Knitted Fabric Composites', Journal of Thermoplastic Composite Materials 10(1), 1997, 76-84.
Rudd, C. D., Owen, M. J., and Middleton, V., 'Mechanical Properties of Weft Knit Glass Fiber/Polyester Laminates', Composite Science and Technology 39, 1990, 261-277.
De Haan, J. and Peijs, T., 'Mechanical Properties of Flexible Knitted Composites', Advanced Composites Letters 5(1), 1996, 9-13.
Chou, S. and Wu, C. J., 'A Study of the Physical Properties of Epoxy Resin Composites Reinforced with Knitted Glass Fiber Fabrics', Journal of Reinforced Plastics and Composites 2, 1992, 1239-1250.
Verpoest, I. and Dendauw., J., Mechanical Properties of Knitted Glass Fibre/Epoxy Resin Laminates', in Proceedings of ECCM-5, Bordeaux, 1992, pp. 927-932.
Gommers, B.,Wang, T. K., and Verpoest, I., 'Mechanical Properties ofWarp Knitted Fabric Reinforced Composites', in Proceedings of the 40th International SAMPE Symposium, Anaheim, California, 1995, pp. 966-976.
Ramakrishna, S., 'Tensile Failure Mechanisms of Knitted Glass Fibre Fabric Reinforced Epoxy Composites', in Proceedings of the 4th International SAMPE Sym., 1995, pp. 661-666.
Xiaoping Ruan and Tsu-Wei Chou, 'Failure Behavior of Knitted Fabric Composites', Journal of Composite Materials 32(3), 1998, 198-222.
Lim, C. T., Ong, L. B., Huang, Z. M., and Ramakrishna, S., 'Effects of Anisotropy on the Mechanical Performance of Knitted Fabric Reinforced Thermoplastic (KFRT) Composites', in 6th International Conference on Composites Engineering, Orlando, Florida, 1999, pp. 491-492.
Bini, T. B., Ramakrishna, S., Huang, Z. M., and Lim, C. T., 'Further Studies on the Tensile Behaviour of Knitted Fabric Composites', in Proceedings of the 6th Japan International SAMPE Symposium, Tokyo, 1999, pp. 513-516.
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Zhang, Y., Huang, ZM. & Ramakrishna, S. Tensile Behaviour of Multilayer Knitted Fabric Composites with Different Stacking Configuration. Applied Composite Materials 8, 279–295 (2001). https://doi.org/10.1023/A:1011270004881
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DOI: https://doi.org/10.1023/A:1011270004881