Ceramic armor plates with composite materials
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Date
2020-01-10Author
Chaimahapuk, Chaiwat
ชัยวัฒน์ ไชยมหาพฤกษ์
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This research has been studied and created the ceramic armor plates with
composite materials that been proceeded from drying compression process with mold.
Al2O3 that use for compression forming has been analyzed by SEM and XRD. It showed
that compound and powder particle led to 5 microns-sized. It had flat circle shape of
colundum Al2O3 and hexagonal crystal system. Upper punch of molding has designed
and analyzed by FEA to 2 forms, first form was the end-point had flat face and second
form was the end-point had a convex. Upper punch had been made from AISI 52100
with 64 HRC, ceramic armor plate had been produced by compression at 1,000 kN
which had hexagon side shape of width 25.98 mm for each side or height between
parallel side of 45 mm. Al2O3 had been compressed to investigate the distribution of
relative density for the height after compression of 15 and 30 mm by analyzing 4 cases
that consist of 1.) a case of smooth face of upper punch which has green compact of
15 mm height 2.) a case of convex face of upper punch which has green compact of 15
mm height 3.) a case of smooth end face of upper punch which has green compact of
30 mm height 4.) a case of convex face of upper punch which has green compact of 30
mm height. The result of this study is to propose the distribution of relative density on
horizontal axis as it is a relative radius and vertical axis is a relative distance from the
upper punch that is an axis of moving down action. This study found that the
distribution of relative density form had analogous form for these 4 cases, the density
had few differences and had high value at the town edge of green compact due
friction between die wall and upper punch. The ceramic armor plate has been set up
on UHMWPE fiber plate and used special silicone to connect them together then will
get the NIJ 3 standard of ceramic armor plate with Composite materials
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- Theses [42]