Eventos Anais de eventos
CONEM 2018
X Congresso Nacional de Engenharia Mecânica
Comportamento mecânico de flexão de materiais pultrudados sob o efeito de alta temperatura
Submission Author:
Carlos Eduardo Reuther de Siqueira , RJ
Co-Authors:
Daniela Schmidt, Carlos Eduardo Reuther de Siqueira
Presenter: Daniela Schmidt
doi://10.26678/ABCM.CONEM2018.CON18-0171
Abstract
The use of non-metallic composites at floor gratings in offshore platforms is driven by the need for increased component life in corrosive environments. As a result, these floor gratings contribute to a lower demand for maintenance and greater operational continuity. However, these composite materials have limitations when are exposed to high temperatures. The application of these floor gratings, on ships and floating offshore platforms have the requirement to retain a significant level of mechanical integrity during and after exposure to a fire. In this work, the mechanical behavior of two composites materials after being subject to a temperature rise was evaluated. One composite has an isophthalic polyester resin as matrix and the other used a phenolic resin. Before the mechanical characterization, thermogravimetric analysis was performed to determine the temperatures of beginning of the thermal degradation, and the microstructure of the composites was evaluated by digital image analysis. Flexural properties of the two composites were performed by a three-point bending test with 25 specimens of each one. The results show that the isophthalic resin matrix composite lost its mechanical integrity with the time of exposure to temperature, while the phenolic matrix composite maintained their properties. However, the mechanical behavior of this composite was impaired by the presence of a high content of voids and of touching fibers arising from the manufacturing process.
Keywords
pultrusion, fire integrity, offshore platform
