Density and compressive strength properties of polyester composites reinforced with spiral geometry woven fiber.

Composites can be produced by combining different materials according to different targets. In this study, woven-type E-glass fiber with a 500 g/m2 unit-area weight has been used as a reinforcement material. Resin, hardener and accelerator have been used as the matrix materials. The dimensions of compression test sample molds were Ø50 mm × 100 mm. Starting from the center toward the outer diameter, spirally wound fibers have been placed into molds with intervals ranging from 1 mm to 9 mm. Composite materials have been prepared at room temperature by applying vibration to the casting method. Compression tests have been carried out on a total of 27 samples, as 3 samples per dimension. It has been determined that the compressive strengths of the polyester resin composites reinforced with spirally wound fiberglass changes per the spiral geometry. The highest compressive strength and density value have been obtained from the samples prepared with intervals of 1 mm. Compressive strength and density value curves have exhibited similar tendencies. [ABSTRACT FROM AUTHOR]