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Energy-absorption capability of thin laminates subjected to heavy-mass projectile impact of varying nose geometries
Published in
2008
Volume: 13
   
Issue: 3
Pages: 237 - 246
Abstract
This study evaluates the energy absorption, perforation and damage evolution created by cylindrical projectile of different nose geometries in woven roving mat/epoxy laminates with 0.45° orientation. A series of ballistic impact tests have been carried out on the laminate with projectile nose geometries representing hemispherical, conical, and conical with round nose and truncated tip. A gas gun projectile launcher set-up was employed to impact the target at different speeds. The damage pattern, perforation mechanism and ballistic limit for each type of projectiles have been studied. Truncated-nose projectile shows the highest ballistic limit while sharp-nose shows the lowest. A quasi-static punch test was carried out on targets with projectiles of above-mentioned nose geometries to assess the damage evolution at a constant strain rate. The maximum load required to cause perforation during punch test was noted for hemispherical-nose projectile. An in-depth layerwise analysis was carried out to analyse the damage in each layer. Copyright © 2008 Taylor & Francis.
About the journal
JournalInternational Journal of Crashworthiness
ISSN13588265
Open AccessNo
Concepts (22)
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    Absorption
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    Explosives
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    Gas absorption
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    Geometry
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    Laminates
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    Projectiles
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    Semiconducting cadmium telluride
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    Strain rate
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    Testing
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    (1 1 1) ORIENTATION
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    ABSORPTION CAPABILITY
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    Ballistic impact testing
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    BALLISTIC LIMITS
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    CONSTANT STRAIN RATE (CSR)
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    DAMAGE EVOLUTION
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    DIFFERENT SPEEDS
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    GAS GUNS
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    MAXIMUM LOADS
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    PROJECTILE IMPACT
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    QUASI STATIC
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    WOVEN ROVING
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    Ballistics