Ballistic properties of polyethylene composites based on bidirectional and unidirectional fibers

Dimeski, Dimko and Bogoeva-Gaceva, Gordana and Srebrenkoska, Vineta (2011) Ballistic properties of polyethylene composites based on bidirectional and unidirectional fibers. Conference Proceedings. ISSN 0352-6542

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Abstract

The goal of this study is to investigate the behavior of composites made of ultra-high molecular weight polyethylene (UHMWPE) woven fabrics and unidirectional tapes under the high speed ballistic impact. UHMWPE fibers are considered to be the strongest fibers in the world and are extensively used in ballistic items (helmets, vests, plates) for personal protection. To investigate their ballistic strength, ballistic composites based on woven fabric and unidirectional tapes are manufactured and subjected to a ballistic test. As ballistic criteria, V50 value is used. The test is done in a ballistic laboratory where the speed of the fragment-simulating projectile is measured prior to its impact to the composite. The unidirectional composites have shown a superior performance as compared to bidirectional ones due to their lower extension of the reflective impact wave i.e. the ballistic impact wave is transmitted to a higher composite area. Due to the crossover points in bidirectional composites, a greater extension of the ballistic wave is reflected back, rendering the ballistic impact to a smaller composite area.

Item Type: Article
Subjects: Engineering and Technology > Materials engineering
Divisions: Faculty of Technology
Depositing User: Vineta Srebrenkoska
Date Deposited: 01 Dec 2012 21:58
Last Modified: 02 Oct 2013 11:15
URI: http://eprints.ugd.edu.mk/id/eprint/2728

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