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| Figure 1.6: Periodic Table showing the materials used in advanced composites (blue blocks) and conventinal metals (yellow blocks) |
Figure 1.6 shows the periodic table. The conventional metals are shown in yellow colour whereas the materials of the advanced fibres are shown in blue colour. It can be seen that the materials of the advanced fibres are lighter than the conventional metals. These materials occupy higher position as compared to metals in the periodic table. Thus, one can easily deduce that, in general, these materials have higher specific properties (property per unit weight) than that of metals.
