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The effect interleaving has on thin-ply non-crimp fabric laminate impact response: X-ray tomography investigation
To improve the damage resistance and tolerance of thin laminates manufactured with thin-ply non-crimp-fabrics, we interleaved non-woven veils into the interlaminar regions (two different types of co-polyamide veil were studied). We devised a low velocity impact and compression after impact (CAI) exp...
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Published in: | Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2018-04, Vol.107, p.409-420 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | To improve the damage resistance and tolerance of thin laminates manufactured with thin-ply non-crimp-fabrics, we interleaved non-woven veils into the interlaminar regions (two different types of co-polyamide veil were studied). We devised a low velocity impact and compression after impact (CAI) experimental campaign, where quasi-static indentation (QSI) tests at increasing loading displacements gave insight into the damage initiation and growth. For impact and QSI, the damage area was inspected using C-scan and X-ray micro-computed tomography. We observed that the melting temperature of the co-polyamide fibres has a key role on the impact response of thin-ply NCFs. Veils that melt during manufacturing avoided resin accumulation at the interfaces, decreased the damage area by more than 100% for a 14 J impact and improved CAI strength by up to 28%. |
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ISSN: | 1359-835X 1878-5840 |
DOI: | 10.1016/j.compositesa.2018.01.023 |