Análise da influência da orientação do ângulo de fibra na resistência à tração do compósito laminado de fibra de vidro e resina poliéster.

Abstract

Composite materials are one of the most important discoveries for engineering and material science, as they utilize the best properties of two or more materials. In this study, the influence of fiber angle orientation on the breaking strength, modulus of elasticity and maximum elonga- tion was determined. The composite analyzed consists of a unidirectional fiberglass fabric with polyester resin. The laminate was manufactured by manual manufacturing process and cured at room temperature under pressure for 8 hours. For exposure tests of specimens were constructed according to ASTM D 3039 / D 3039M, and in total 25 examples are distributed in sections of 0 °, 30 °, 45 °, 60 ° and 90 °, in relation to load. applied by the testing machine. The selected results greatly influence the orientation of the fiber angle on the mechanical strength. The test showed that at 0 o orientation the average breaking strength was 437.05 MPa, while a 90 o resistance value was only 3.53 MPa.