Navegando por Autor "TAKAHASHI, Rafael"

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    Estudo da Influência da Umidade e Salinidade em Material Compósito de Matriz Polimérica
    (INSTITUTO DE TECNOLOGIA, 2013) SANTOS, Eduardo de Jesus Silva dos; TAKAHASHI, Rafael; COSTA, Delbson Silva da; LOPES, Raimundo Valdan Pereira; PINTO, Vagner Barroso; LEITE, Jandecy Cabral; FUJIYAMA, Roberto Tetsuo; Prof. Dr. Carlos Tavares da Costa Júnior
    This study examines the mechanical properties of polyester matrix composites reinforced with macaranduba wood powder and the effects of exposure to adverse environmental conditions, such as humidity and salinity. The results indicate that aging in water and saline water significantly reduces the impact resistance of the material due to degradation at the matrix-reinforcement interface.
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    Material Compósito de Matriz Polimérica Reforçada com Fibras Vegetais de Curauá e Sisal
    (INSTITUTO DE TECNOLOGIA, 2013) SANTOS, Eduardo de Jesus Silva dos; TAKAHASHI, Rafael; COSTA, Deibson Silva da; LOPES, Raimundo Valdan Pereira; PINTO, Vagner Barroso; LEITE, Jandecy Cabral; FUJIYAMA, Roberto Tetsuo; MAGALHÃES, Edilson Marques
    This study evaluated the manufacturing process of polymer matrix composites reinforced with natural curauá and sisal fibers, focusing on a fiber length of 25 mm. The methodology involved producing prepregs by spraying polyester resin diluted in styrene and manual lamination followed by compression molding. Specimens were tested according to ASTM D3039, showing that the curauá fiber composite exhibited higher tensile strength (average of 680.72 N) compared to sisal (431.53 N). The results confirmed the feasibility of the process and the influence of fiber type and length on the mechanical properties of the material.