Record Details

Ballistic impact behaviour of woven fabric composites: Formulation

DSpace at IIT Bombay

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Title Ballistic impact behaviour of woven fabric composites: Formulation
 
Creator NAIK, NK
SHRIRAO, P
REDDY, BCK
 
Subject analytical-model
laminated kevlar
penetration
perforation
projectiles
armors
ballistic impact
woven fabric composite
energy absorbing mechanisms
prediction
ballistic limit
high strain rate
stress wave attenuation
 
Description Resistance to high velocity impact is an important requirement for high performance structural materials. Even though, polymer matrix composites are characterized by high specific stiffness and high specific strength, they are susceptible to impact loading. For the effective use of such materials in structural applications, their behaviour under high velocity impact should be clearly understood. In the present study, investigations on the ballistic impact behaviour of two-dimensional woven fabric composites have been presented. Ballistic impact is generally a low-mass high velocity impact caused by a propelling source. The analytical method presented is based on wave theory. Different damage and energy absorbing mechanisms during ballistic impact have been identified. These are: cone formation on the back face of the target, tension in primary yarns, deformation of secondary yarns, delamination, matrix cracking, shear plugging and friction during penetration. Analytical formulation has been presented for each energy absorbing mechanism. Energy absorbed during each time interval and the corresponding reduction in velocity of the projectile has been determined. The solution is based on the target material properties at high strain rate and the geometry and the projectile parameters. Using the analytical formulation, ballistic limit, contact duration at ballistic limit, surface radius of the cone formed and the radius of the damaged zone have been predicted for typical woven fabric composites. The analytical predictions have been compared with the experimental results. A good correlation has been observed. (c) 2005
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-23T16:08:21Z
2011-12-26T12:56:30Z
2011-12-27T05:45:20Z
2011-08-23T16:08:21Z
2011-12-26T12:56:30Z
2011-12-27T05:45:20Z
2006
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 32(9), 1521-1552
0734-743X
http://dx.doi.org/10.1016/j.ijimpeng.2005.01.004
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10569
http://hdl.handle.net/10054/10569
 
Language en