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Titolo:
Modelling of the energy absorption by polymer composites upon ballistic impact
Autore:
Morye, SS; Hine, PJ; Duckett, RA; Carr, DJ; Ward, IM;
Indirizzi:
Univ Leeds, IRC Polymer Sci & Technol, Leeds LS2 9JT, W Yorkshire, EnglandUniv Leeds Leeds W Yorkshire England LS2 9JT S2 9JT, W Yorkshire, England Def Clothing & Text Agcy, Div Sci & Technol, Colchester CO2 7SS, Essex, England Def Clothing & Text Agcy Colchester Essex England CO2 7SS Essex, England
Titolo Testata:
COMPOSITES SCIENCE AND TECHNOLOGY
fascicolo: 14, volume: 60, anno: 2000,
pagine: 2631 - 2642
SICI:
0266-3538(2000)60:14<2631:MOTEAB>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIBER; PERFORATION; PROJECTILES;
Keywords:
polymer matrix composites (PMC); modelling; impact behaviour; laminates; ballistic impact;
Tipo documento:
Reprint
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Hine, PJ Univ Leeds, IRC Polymer Sci & Technol, Leeds LS2 9JT, W Yorkshire, England Univ Leeds Leeds W Yorkshire England LS2 9JT Yorkshire, England
Citazione:
S.S. Morye et al., "Modelling of the energy absorption by polymer composites upon ballistic impact", COMP SCI T, 60(14), 2000, pp. 2631-2642

Abstract

In this paper we report on the development of a simple model for calculating the energy absorption by polymer composites upon ballistic impact. Threemajor components were identified as contributing to the energy lost by theprojectile during ballistic impact, namely the energy absorbed in tensile failure of the composite, the energy converted into elastic deformation of the composite and the energy converted into the kinetic energy of the moving portion of the composite. These three contributions are combined in the model to determine a value for the ballistic limit of the composite, V-0. The required input parameters for the model were determined by a combination of physical characterisation (for the physical and mechanical properties ofthe composites and the characteristics of the projectile) and from high-speed photography (for the size of the deformed region and the cone velocity). As the failure event usually occurred between two of a relatively small number of frames from the high-speed camera, the model predicted a range forV-0. This range of V-0 was compared with experimentally determined values for three composite systems: woven Nylon-66 fibres in a 50:50 mixture of phenol formaldehyde resin and polyvinyl butyral resin, woven aramid fibres ina similar matrix and Dyneema UD66 (straight gel-spun polyethylene fibres laid in a 0/90 fibre arrangement in a thermoplastic matrix). In all cases, the experimentally measured values of V-0 were found to lie within the rangepredicted by the model. The size of the deformed region, formed through shear deformation, on the back face of the composite was found to relate directly to the in-plane shear modulus of the material. Perhaps the most surprising result was that the dominant energy absorbing mechanism was found to be the kinetic energy of the moving portion of the composites. Crown Copyright (C) 2000 Published by Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 07:33:19