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Steel and Composite Structures Volume 26, Number 2, January25 2018 , pages 241-253 DOI: https://doi.org/10.12989/scs.2018.26.2.241 |
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Tow waviness and anisotropy effects on Mode II fracture of triaxially woven composite |
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M.Y. Al-Fasih, A.B.H. Kueh, S.H. Abo Sabah and M.Y. Yahya
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| Abstract | ||
| Mode II fracture toughness, KIIC, of single-ply triaxially woven fabric (TWF) composite due to tow waviness and anisotropy effects were numerically and experimentally studied. The numerical wavy beam network model with anisotropic material description denoted as TWF anisotropic was first validated with experimental Mode II fracture toughness test employing the modified compact tensile shear specimen configuration. 2D planar Kagome and TWF isotropic models were additionally constructed for various relative densities, crack lengths, and cell size parameters for examining effects due to tow waviness and anisotropy. KIIC generally increased with relative density, the inverse of cell size, and crack length. It was found that both the waviness and anisotropy of tow inflict a drop in KIIC of TWF. These effects were more adverse due to the waviness of tow compared to anisotropy. | ||
| Key Words | ||
| waviness; anisotropy; fracture toughness; triaxially woven fabric composite; 2D planar | ||
| Address | ||
| (1) M.Y. Al-Fasih, A.B.H. Kueh, S.H. Abo Sabah: Construction Research Centre, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; (2) M.Y. Yahya: Centre for Composites, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia. | ||