Page 91 - Template Tesis UTM v2.0

Akil et al. [112] has extensively studied dynamic compression using SHPB

apparatus to determine the behaviour and response of the composite materials. SHPB
-1
test was conducted at 1300 ms to determine the effect of filler loading on the dynamic
mechanical properties of PP-SiO2 nanocomposite. Result indicated that the dynamic
compression modulus and compressive strength properties are seen to increase with

the increase of filler loading from 1 to 3 % with PP-3%SiO2 recorded the highest value
of compression properties. The higher the filler loading added into nanocomposite, the

higher the strengthen mechanism and work hardening rate of the glass.

Natural fibres of pultruded jute and kenaf reinforced composites were
-1
investigated experimentally using SHPB at strain rates of 1021, 1150 and 1340 s . It
was found that the higher dynamic compression properties were recorded when the
higher strain rates were imposed on the tested specimens. Jute fibre reinforced

composites recorded the highest value of dynamic compression modulus and

compressive strength in comparison with kenaf. In terms of damage severity, kenaf
reinforced composites were more severely damaged for all tested strain rates [113].

Omar et al. [114] investigated on the independent and interactive effects of
strain rates using SHPB on dynamic mechanical properties between polypropylene

(PP), polycarbonate (PC) and polyethylene (PE) at three different strain rates, 650, 900
-1
and 1100 s . Results indicated that the yield stress, compression modulus,
compressive strength, strain rate sensitivity and strain energy increased significantly

with increased strain rates, instead of only yield strain showing contrary. Between
three polymers, PC showed the highest strain rate sensitivity, followed by PP and PE.

On the other hand, the effect of strain rates on the mica/polypropylene with the
different percentage of mica content was investigated via SHPB at three high strain

-1
rates of 656, 913 and 1136 s . Results showed that yield stress, fracture strain,
compression modulus and compressive strength significantly affected the level of
strain rates applied and mica content [115].

SHPB test was applied on rice husk/linear low-density PE to investigate the
effect of surface modification under various loading rates. In this study, three strain

-1
rates were applied which are 650, 900 and 1100 s . Dynamic compression strength

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