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Master's Dissertation
DOI
10.11606/D.18.2017.tde-31082017-084830
Document
Author
Full name
Kwai Nan Tê
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2016
Supervisor
Committee
Tarpani, José Ricardo (President)
Carvalho, Jonas de
Pardini, Luiz Cláudio
Title in Portuguese
Estudo das propriedades mecânicas de compósitos poliméricos reforçados por fibra de carbono e manufaturados pelos processos de laminação manual, infusão de resina e pré-impregnado
Keywords in Portuguese
Compósitos
Infusão de resina a vácuo
Laminação manual
Pré-impregnados
Propriedades mecânicas
Abstract in Portuguese
Há um aumento da demanda mundial por materiais de alto desempenho, e os compósitos encaixam-se perfeitamente nesse nicho por serem resistentes e leves. Os compósitos poliméricos são feitos a partir da mistura de resina e reforço, no entanto, existem diversas metodologias para fazê-la. O presente trabalho compara em amplo aspecto, três desses métodos: laminação manual, infusão de resina e pré-impregnado. O primeiro é o método mais simples, o segundo é utilizado principalmente pela indústria náutica, e o terceiro pela indústria aeroespacial. Foram realizados diversos ensaios mecânicos como tração, flexão, cisalhamento, impacto, entre outros, e os resultados foram comparados entre si para demonstrar qualitativamente e quantitativamente as diferenças entre eles. Este trabalho demonstrou que o processo de pré-impregnado produz peças com propriedades cerca de 30% melhores que a infusão de resina, que por sua vez, possui um acréscimo de 25% sobre as propriedades da laminação manual.
Title in English
Mechanical properties study of the carbon fiber reinforced polymers manufactured via hand lay-up, resin infusion under flexible tooling and pre-preg
Keywords in English
Composite
Hand lay-up
Mechanical properties
Pre-preg
Resin infusion
Abstract in English
There is an increasing worldwide demand for high performance materials, and therefore the composites reach a prominent position for being resistant and light weighted. Polymeric composites are made from mixing a given resin and the fibre; however, there are several different methodologies to do so. This work intends to compare, in a wide array, three of those methods: hand lay-up, resin infusion under flexible tooling and pre-pregs. The first is the simplest of all, the second is mainly used by the marine industry, and the third by the aerospace industry. Several mechanical tests such as tension, flexural, shear, impact, among others, were performed and their results were compared to infer their qualitatively and quantitatively differences. This study shows evidence that pre-preg properties are about 30% better than resin infusion, and the last has 25% better properties than hand lay-up.
 
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Publishing Date
2017-09-13
 
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