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4.9.1 The Effects of Stacking Sequence on the Force - Time Histories of E-
glass/Basalt, E-glass/Jute and E-glass/Flax
The force-time histories of E-glass/basalt and E-glass/flax are similar as shown
in Figure 4.23 and 4.25, respectively. The linear increase of the forces is higher in the
G2/B3/G2 and G2/F3/G2, compared to the [G/B]3G and [G/F]3G. Conversely, E-
glass/jute in Figure 4.24, shows a different pattern where a higher load is required for
[G/J]3G. In terms of the peak force, G2/B3/G2 and G2/F3/G2 performed better compared
to their IC configurations, while [G/J]3G shows contradictory results; after the
maximum force was reached, the force decreased in an almost linear and non-
oscillating curve, which indicates the load that laminate could withstand pressure
before any major damages occur.
In this regard, [G/J]3G shows the highest peak force, followed by G2/F3/G2
while [G/B]3G had the lowest peak force. This suggests that the presence of a higher
number of interfaces in IC sequence of [G/B]3G and [G/F]3G may consequently be
detrimental to the overall properties of the laminates especially in their stiffness. These
findings concur with a previous study regarding the effect of lay-up architecture on
plain-weave flax laminates [85].
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