Toughness Of Fibreglass Laminated Composites

Kam, Pei Yi (2009) Toughness Of Fibreglass Laminated Composites. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Charpy impact test were carried out for E-glass/polyester and E-glass/epoxy composite specimens to determine the amount of energy absorption of the specimen. Woven roving type [0/90] and [45/45] of E-glass used in this research. Hand lay-up method was used in fabricating the composite specimens. Specimens were fabricated with the dimension according to ASTM standard E23 of 55mm x 10mm x 10mm. In this research, the specimens were put under different environment conditions before impact test such as under different temperature range from room temperature to 55˚C, under UV light and also tested its resistance against distilled water, sea water, river water, acid and alkaline solution. Unexposed specimens (under ambient temperature) of same parameter were used as a baseline for comparison specimens. The effects of different environment conditions on the toughness of fiberglass laminated composite specimens were studied. Results shown that the impact energy of E-glass/polyester [0/90] specimens decrease with increasing testing temperature. There was a significant reduction of energy absorbed when subjected to UV light. It was found that the specimens immersed in acids solution has the highest impact energy, followed by sea water, alkaline solution, river water whereas distilled water has the lowest impact energy values. E-glass with orientation [45/45] shows higher impact energy compare to orientation [0/90]. On the other hand, both polyester and epoxy resin with orientation [0/90] and [45/45] were studied.

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