MECHANICAL CHARACTERIZATION OF VEGETAL COMPOSITES USING DIC

Ano: 2019

Instituições de ensino: Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca

Idioma: Ingles

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Resumo

The major area described in this paper is that of composite materials, specifically hybrid composites that use as matrix reinforcement one or more vegetable fibre types (Sisal, Ramie or Curaua). It is important for engineering to make use of materials that have a low environmental impact and are sustainable. Therefore, composites reinforced with two or more types of natural fibres have been on the focus of some research, in order to improve their resistance so that one day they can substitute products made with glassfibre composites in secondary applications. This paper shows a process of characterization of mechanical properties through the Digital Image Correlation (DIC) method in hybrid composites, which measures the displacements of the specimen without being in contact with it, such as the extensometers. The main objective is to compare force and displacement curves from universal test machine with the DIC method. The methodology applied was the use of GOM Correlate software, which for 2D applications, offers a free version as well as the free app GonnyCam to make the images of the specimen. These softwares have been used for measuring the displacements of hybrid composites in tensile tests. The great difference between these methodologies is related to the influence of the test machine in the yield properties of the material.

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