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Title: Tensile behaviour of multilayer knitted fabric composites with different stacking configuration
Authors: Zhang, Y. 
Huang, Z.-M. 
Ramakrishna, S. 
Keywords: Experimentation
Fracture mode
Internal load direction
Knitted fabric composites
Mechanical properties
Multilayer laminate
Stacking configuration
Issue Date: 2001
Citation: Zhang, Y., Huang, Z.-M., Ramakrishna, S. (2001). Tensile behaviour of multilayer knitted fabric composites with different stacking configuration. Applied Composite Materials 8 (4) : 279-295. ScholarBank@NUS Repository.
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.
Source Title: Applied Composite Materials
ISSN: 0929189X
DOI: 10.1023/A:1011270004881
Appears in Collections:Staff Publications

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