Avaliação do condicionamento higrotérmico em compósitos fibra de carbono/epóxi e titânio anodizado

• Autor(a) principal: Rosa, Beatriz de Melo [UNESP]
• Data de Publicação: 2017
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/156781; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2018-08-16/000902208.pdf
• topic: Materiais compostos; Compósitos poliméricos; Fibras de carbono; Titânio; Composite materials

With the development of metal fiber hybrid composite in the 70's, there was a revolution in the aircraft industry. Along with the application of these materials to various components of aircraft structures, studies for their improvement has emerged. When it comes to composites, the interface between its components is a region of great concern because there is a correlation between the interaction between the composite components and the properties of the material. This work concludes a series of theoretical and experimental studies about the interface of the carbon fiber/epoxy/titanium composite, focusing on the metal anodizing and the hygrothermal conditioning of the composites. Therefore, this work presents the anodizing of titanium and a study of the surface properties obtained through this procedure. The surface characterization of the metal was performed by contact angle measurements, atomic force microscopy and optical microscopy. In a second moment, composites were conditioned in hygrothermal environment to analyze the influence of humidity on their mechanical properties. Composites mechanical characterizations, conditioned and unconditioned, were performed by compression shear test (CST), interlaminar shear strength (ILSS), end-notched flexure (ENF - mode II) and vibration tests. Mechanical tests showed a reduction of 39.3% in shear strength values, 44.5% in fracture toughness values and 84.1% in shear bond strength of the composites after 32 days of hygrothermal conditioning