Record Details

Oblique ballistic impact behavior of composites

DSpace at IIT Bombay

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Field Value
 
Title Oblique ballistic impact behavior of composites
 
Creator RAJAGOPAL, A
NAIK, NK
 
Subject Fiber-reinforced composite
oblique ballistic impact
energy-based model
projectile obliquity change
damage mechanisms
experimental validation
WOVEN FABRIC COMPOSITES
NUMERICAL-SIMULATION
RIGID PROJECTILE
THICK COMPOSITES
METALLIC PLATES
PENETRATION
PERFORATION
TARGETS
ARMORS
PERFORMANCE
 
Description An analytical model has been presented for oblique ballistic impact behavior of composites based on wave theory and energy balance between the projectile and the target. The change in obliquity of the projectile during ballistic impact has been studied. The nature of obliquity change depends on the behavior of the target material just after impact and its surface condition. Various energy absorbing mechanisms of the target considered are compression of the target directly below the projectile, compression in the region surrounding the impacted zone, tension in the layers, compression in the lateral direction, shear plugging, friction, matrix cracking and delamination. Analytical predictions are validated with the experimental results. Experimental studies were performed on 4-8mm thick twill weave fabric E-glass/epoxy composite specimens up to obliquity of 30 degrees. Parametric studies have been carried out on the same target material of 19mm thickness for the same range of obliquities. Energy absorbed by different mechanisms, change in projectile obliquity, ballistic limit velocity and damage shape and size has been presented. Trends in ballistic limit velocity with the initial projectile obliquity were observed to be different for 4mm and 19mm thick specimens.
 
Publisher SAGE PUBLICATIONS LTD
 
Date 2014-12-28T13:00:08Z
2014-12-28T13:00:08Z
2014
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF DAMAGE MECHANICS, 23(4)453-482
1056-7895
1530-7921
http://dx.doi.org/10.1177/1056789513499268
http://dspace.library.iitb.ac.in/jspui/handle/100/16640
 
Language English