Development of Combat Armor From Ramie-Aramidpolyester Composite
In this study the laminates composite material is developed from ramie-aramid-polyester resin. The aim of this study is to developed solid body armor by using ramie-aramid reinforced polyester composite structure design. The design of body armor meet the specific requirements of ballistic resist...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English English |
| Published: |
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/7836/1/ABS_----__FK_2009_66.pdf http://psasir.upm.edu.my/id/eprint/7836/ |
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| Summary: | In this study the laminates composite material is developed from
ramie-aramid-polyester resin. The aim of this study is to developed solid
body armor by using ramie-aramid reinforced polyester composite structure
design. The design of body armor meet the specific requirements of ballistic
resistance. The matrix of the developed composite is unsaturated Polyester
resin reinforced with aramid-natural ramie fiber. This ramie-aramid composite
is subjected to high impact loading. The target is shot by using gas gun
machine supported by camera hardware to capture the projectile speed. To
achieve the goal of the research, experiments were conducted with a focus
on estimation the ballistic limit, maximum energy absorption, composite
failure mode, life time rupture, target geometry and environmental effect. The
results of these experiments indicated that the maximum ballistic limit
validated at impact speed is in the range of 250 m/s to 656.8 m/s for the
second protection level. The targets are improved in the area of impact
respond with increase in the relative humidity in the range of 50% ± 20%.Whereby, reduction of resistance results in the increase of temperature. The
range of temperatures was between 20 OC to 70 OC. A limited delamination
was generated under multiple shots. Targets geometry plays a main role in
increasing impact response. Hence, the results were presented high resistant
impact for pairs from panels with total thickness of 15 mm ± 3mm. This body
armor is one of most economical armor products in that; common materials
were used in its production especially to the reduction of the using Kevlar
amount that led to decrease in its cost. On the other hand this armor met the
ballistic threats under 623 m/s of 15 mm ± 3 mm target thickness and 837.5
m/s of 25 mm ± 2.mm. Thus, the armor is equivalent to third level of
protective ballistic limits in National Institute of Justice (NIJ) standards |
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