Influence of fabric structure and thickness on the ballistic impact behavior of Ultrahigh molecular weight polyethylene composite laminate |
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| Affiliation: | 1. Defence Metalurgical Research Laboratory, Kanchanbagh, Hyderabad, 500 058, India;2. Jawaharlal Nehru Technological University, Hyderabad 500072, India;1. Department of Material Science & Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, VA 22904, USA;2. Engineering Department, Cambridge University, Trumpington Street, Cambridge CB2?1PZ, UK |
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| Abstract: | This paper presents the influence of fabric structure and thickness on the ballistic impact behavior of Ultrahigh molecular weight polyethylene (UHMWPE) composite laminate. UHMWPE composite laminates, reinforced by three kinds of fabric structures, unidirectional prepreg, 2D plain-woven and 3D single-ply orthogonal woven fabrics, were fabricated via hot pressing curing process. Through a series of standard ballistic tests, we demonstrated that unidirectional composite laminates exhibit higher ballistic impact velocity and absorbed energy capacity compared to others. A bi-linear relationship was found between the ballistic limit velocity and specimen thickness. Furthermore, the dominant failure mechanisms of unidirectional composite laminates were identified to be plugging and hole friction for thin laminates, whereas delamination, fiber tension and bulging for thick ones. |
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| Keywords: | Ballistic behavior Composite laminates Ultrahigh molecular weight polyethylene Single-ply 3D orthogonal woven fabric |
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