Özet:

This study investigated the effect of fiber weight and gelcoat on the mechanical properties of glass fiber-reinforced composite plates produced by Resin Transfer Molding (RTM). Three different lamination plans and gelcoat versions of these plans were used. Tensile test, three-point bending test and Barcol hardness tests were performed to examine the samples. Fibers of 3 different weights, 300 g/m2, 450 g/m2, and 600 g/m2, were used in the lamination plans. In addition, 180 g/m2 and 250 g/m2 polypropylene core material was used between lamination. One gelcoat and one non-gelcoat plate were produced for each lamination. At the end of the production, 6 plates with thicknesses ranging from 2.5 mm to 3.2 mm were produced. For the three-point bending and tensile test, 10 samples were cut each, the Barcol hardness test was taken from 5 points on the plate. As a result of the tests, it was observed that the strength values increased and the elongation values decreased with the increase in fiber weight. A decrease in mechanical properties in the 5 - 15% range was observed in the gelcoat versions of each lamination.

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