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This paper presents the comparison studies of composite materials of jute fibers 5,0 mm and 15,0 mm and polyester resin in ASTM D3039 and D638 standards. The jute fiber is easily found in the metropolitan area of Belem, from the study of it has been proven that their use is feasible in the manufactures of composites. It began the manufacture of the composite without prior treatment in the fibers. The specimens were manufactured in ASTM D3039 and D638 standards for both lengths, with polyester resin, and catalyst was added to accelerate the curing process. After the preparation of specimens, such specimens have undergone processes of adaptation to the rules and then immediately forwarded to the tensile test for the analyses of mechanical properties and results discussed in the course of the article. Key-words: Natural fibers, mechanical properties, comparison. 23o CBECiMat Congresso Brasileiro de Engenharia e Ciência dos Materiais 04 a 08 de Novembro de 2018, Foz do Iguaçu, PR, Brasil

Comparação no comportamento a tração obtidos pelas normas ASTM D3039 e D638 para poliéster reforçada por fibras de juta de 5,0 mm e de 15,0 mm