Estudio comparativo de las propiedades mecánicas y vibratorias de un material compuesto reforzado con fibras de fique frente a un compuesto con fibras de vidrio – E
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Universidad Industrial de Santander
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En la presente investigación se compararon las propiedades vibratorias mecánicas y dinámicas entre un compuesto reforzado con fibras y un compuesto con fibras de vidrio - E. Los materiales se fabricaron a través de una técnica de fabricación de infusión al vacío utilizando una resina bioepoxi. Las propiedades mecánicas se obtuvieron por ensayos de tracción según las normas ASTM para cada configuración. Los resultados demostraron valores más altos en rigidez y resistencia para el compuesto con fibra de vidrio - E. Se utilizó el análisis modal experimental para el estudio vibratorio dinámico, obteniendo conductas muy similares para cada material. La interfaz entre los materiales se estudió mediante microscopía electrónica de barrido, en la que se evidenció una baja adhesión entre la fibra natural y la resina; que afecta las propiedades mecánicas y dinámicas del compuesto fique en comparación con el compuesto de vidrio - E.
In the following research, the mechanical and dynamic vibratory properties between a fique fiber reinforced composite and a composite with E-glass fibers were compared. The materials were fabricated trough a vacuum infusion manufacturing technique using a bioepoxy resin. The mechanical properties were obtained by tensile tests according to the ASTM standards for each configuration. The results demonstrated higher values in stiffness and strength for the composite with E-glass fiber. Experimental modal analysis was used for the dynamic vibrational study, obtaining very similar behaviors for each material. The interface between the materials was studied by scanning electron microscopy, in which a low adhesion between the natural fiber and the resin was evidenced; affecting the mechanical and dynamic properties of the fique composite compared to the E-glass composite.
In the following research, the mechanical and dynamic vibratory properties between a fique fiber reinforced composite and a composite with E-glass fibers were compared. The materials were fabricated trough a vacuum infusion manufacturing technique using a bioepoxy resin. The mechanical properties were obtained by tensile tests according to the ASTM standards for each configuration. The results demonstrated higher values in stiffness and strength for the composite with E-glass fiber. Experimental modal analysis was used for the dynamic vibrational study, obtaining very similar behaviors for each material. The interface between the materials was studied by scanning electron microscopy, in which a low adhesion between the natural fiber and the resin was evidenced; affecting the mechanical and dynamic properties of the fique composite compared to the E-glass composite.
Keywords
Modal Analysis, composite, fique, E-glass, scanning electron microscopy, tensile test, Análisis modal, compuesto, fique, vidrio – E, microscopía electrónica de barrido, ensayo de tracción