Towards balancing in-plane mechanical properties and impact damage tolerance of composite laminates using quasi-UD woven fabrics with hybrid warp yarnsCitation formats

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Towards balancing in-plane mechanical properties and impact damage tolerance of composite laminates using quasi-UD woven fabrics with hybrid warp yarns. / Katnam, K.b.; Dalfi, H.; Potluri, P.

In: Composite Structures, Vol. 225, 111083, 10.06.2019.

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@article{3753a505c29741abac05488a469f2b6a,
title = "Towards balancing in-plane mechanical properties and impact damage tolerance of composite laminates using quasi-UD woven fabrics with hybrid warp yarns",
abstract = "An experimental study is conducted with the aim of balancing in-plane mechanical properties and impact damage tolerance in composite woven laminates using a quasi-unidirectional (quasi-UD) woven fabric (i.e. low crimp architecture) and yarn-level fibre hybridisation. In this work, composite laminates are manufactured with and without yarn-level hybridisation and yarn crimp. By combining high-strength fibres (i.e. S-glass) and high-elongation fibres (i.e. polypropylene, PP) with commingling and core-wrapping processes, hybrid S-glass/PP yarns are produced. A quasi-UD fabric is then produced with unbalanced warp and weft yarns (i.e. 5H satin with high linear density hybrid S-glas/PP warp and low linear density S-glass weft yarns), and subsequently laminates are manufactured using vacuum-assisted resin infusion. In addition, hybrid S-glass/PP yarns are used to manufacture non-crimp (i.e. without weft yarns) and 5H satin fabric (i.e. with balanced S-glass/PP warp and weft yarns) laminates. For comparison, S-glass yarns are used to manufacture non-crimp cross-ply laminates (i.e. without yarn-level hybridisation and without weft yarns). For all the laminates, the in-plane mechanical properties are measured by using tensile and compresive tests, and the low velocity impact response is investigated using drop-weight impact tests with different energy levels (i.e. 15, 25, 35 and 50 J). Furthermore, the impact damage tolerance is characterised by measuring residual compressive strengths with compression-after-impact tests. The damaged specimens are investigated using scanning electron microscopy to identify inter- and intra-laminar failure mechanisms. The results indicate that the quasi-UD woven fabric composites with low crimp and yarn-level hybridisation can be successfully used to introduce conducive fibre architecture and microstructures to balance in-plane mechanical properties and impact damage tolerance.",
keywords = "2D woven hybrid composites, yarn-level fibre hybridisation, damage tolerance, low velocity impact damage, residual compressive strength, toughening mechanisms",
author = "K.b. Katnam and H. Dalfi and P. Potluri",
year = "2019",
month = jun,
day = "10",
doi = "10.1016/j.compstruct.2019.111083",
language = "English",
volume = "225",
journal = "Composite Structures",
issn = "0263-8223",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Towards balancing in-plane mechanical properties and impact damage tolerance of composite laminates using quasi-UD woven fabrics with hybrid warp yarns

AU - Katnam, K.b.

AU - Dalfi, H.

AU - Potluri, P.

PY - 2019/6/10

Y1 - 2019/6/10

N2 - An experimental study is conducted with the aim of balancing in-plane mechanical properties and impact damage tolerance in composite woven laminates using a quasi-unidirectional (quasi-UD) woven fabric (i.e. low crimp architecture) and yarn-level fibre hybridisation. In this work, composite laminates are manufactured with and without yarn-level hybridisation and yarn crimp. By combining high-strength fibres (i.e. S-glass) and high-elongation fibres (i.e. polypropylene, PP) with commingling and core-wrapping processes, hybrid S-glass/PP yarns are produced. A quasi-UD fabric is then produced with unbalanced warp and weft yarns (i.e. 5H satin with high linear density hybrid S-glas/PP warp and low linear density S-glass weft yarns), and subsequently laminates are manufactured using vacuum-assisted resin infusion. In addition, hybrid S-glass/PP yarns are used to manufacture non-crimp (i.e. without weft yarns) and 5H satin fabric (i.e. with balanced S-glass/PP warp and weft yarns) laminates. For comparison, S-glass yarns are used to manufacture non-crimp cross-ply laminates (i.e. without yarn-level hybridisation and without weft yarns). For all the laminates, the in-plane mechanical properties are measured by using tensile and compresive tests, and the low velocity impact response is investigated using drop-weight impact tests with different energy levels (i.e. 15, 25, 35 and 50 J). Furthermore, the impact damage tolerance is characterised by measuring residual compressive strengths with compression-after-impact tests. The damaged specimens are investigated using scanning electron microscopy to identify inter- and intra-laminar failure mechanisms. The results indicate that the quasi-UD woven fabric composites with low crimp and yarn-level hybridisation can be successfully used to introduce conducive fibre architecture and microstructures to balance in-plane mechanical properties and impact damage tolerance.

AB - An experimental study is conducted with the aim of balancing in-plane mechanical properties and impact damage tolerance in composite woven laminates using a quasi-unidirectional (quasi-UD) woven fabric (i.e. low crimp architecture) and yarn-level fibre hybridisation. In this work, composite laminates are manufactured with and without yarn-level hybridisation and yarn crimp. By combining high-strength fibres (i.e. S-glass) and high-elongation fibres (i.e. polypropylene, PP) with commingling and core-wrapping processes, hybrid S-glass/PP yarns are produced. A quasi-UD fabric is then produced with unbalanced warp and weft yarns (i.e. 5H satin with high linear density hybrid S-glas/PP warp and low linear density S-glass weft yarns), and subsequently laminates are manufactured using vacuum-assisted resin infusion. In addition, hybrid S-glass/PP yarns are used to manufacture non-crimp (i.e. without weft yarns) and 5H satin fabric (i.e. with balanced S-glass/PP warp and weft yarns) laminates. For comparison, S-glass yarns are used to manufacture non-crimp cross-ply laminates (i.e. without yarn-level hybridisation and without weft yarns). For all the laminates, the in-plane mechanical properties are measured by using tensile and compresive tests, and the low velocity impact response is investigated using drop-weight impact tests with different energy levels (i.e. 15, 25, 35 and 50 J). Furthermore, the impact damage tolerance is characterised by measuring residual compressive strengths with compression-after-impact tests. The damaged specimens are investigated using scanning electron microscopy to identify inter- and intra-laminar failure mechanisms. The results indicate that the quasi-UD woven fabric composites with low crimp and yarn-level hybridisation can be successfully used to introduce conducive fibre architecture and microstructures to balance in-plane mechanical properties and impact damage tolerance.

KW - 2D woven hybrid composites

KW - yarn-level fibre hybridisation

KW - damage tolerance

KW - low velocity impact damage

KW - residual compressive strength

KW - toughening mechanisms

U2 - 10.1016/j.compstruct.2019.111083

DO - 10.1016/j.compstruct.2019.111083

M3 - Article

VL - 225

JO - Composite Structures

JF - Composite Structures

SN - 0263-8223

M1 - 111083

ER -