Page 184 - Template Tesis UTM v2.0

the increase to the maximum strain of 0.09, where compressive stress dropped rapidly

and decreased linearly beyond this limit.

Apart from that, E-glass/jute and E-glass/flax recorded different pattern; the G7

composites exhibit the strongest dynamic compression properties while natural fibre
laminates demonstrate the weakest dynamic compression properties in the tested strain

rates. For example, at the strain of 0.05, the difference between the maximum

compressive stress of G2/J3/G2 (Figure 4.39) and G2/F3/G2 (Figure 4.40) with pure jute,
J7 and pure flax, F7 laminates are 118 and 100 MPa, respectively. As a result, the

formation of G2/J3/G2 and G2/F3/G2 had increased the dynamic maximum compressive
stress by 143% and 155 %, respectively compared to pure jute, J7 and pure flax, F7

laminates. These findings show that natural resources are viable and could potentially
utilised in composite industries as alternative for man-made fibres.

600
S1 2/B3/G2
G
S4
500 [G/B]3G

S77
G

S87
B
400

Stress (MPa) 300

200

100

0
0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18
Strain

Figure 4.38 Comparison of stress-strain curves between E-glass/basalt, E-glass and
-1
basalt laminates at 950 s strain rates

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