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Comparison of Micromechanical Models for Predicting the Young’s Modulus of Fiber-Reinforced Epoxy

  • Sotomayor, Oscar [1] ; Pancho, Antonio [1]
    1. [1] Escuela Politécnica Nacional

      Escuela Politécnica Nacional

      Quito, Ecuador

  • Localización: Revista Politécnica, ISSN-e 2477-8990, Vol. 54, Nº. 2, 2024 (Ejemplar dedicado a: Revista Politécnica), págs. 47-55
  • Idioma: inglés
  • DOI: 10.33333/rp.vol54n2.04
  • Títulos paralelos:
    • Comparación de Modelos Micromecánicos para Predecir el Módulo de Young en resinas Epoxi reforzadas con fibras
  • Enlaces
  • Resumen
    • español

      Los modelos analíticos para predecir las propiedades mecánicas de los materiales compuestos son adecuados cuando los procedimientos experimentales no son viables. En este estudio, se presenta una revisión de los modelos analíticos micromecánicos utilizados para predecir el módulo de Young de materiales compuestos reforzados con fibras (CRF). Los modelos teóricos evaluados en este trabajo fueron: modelos en serie y en paralelo, módulo efectivo, ecuaciones de Halpin-Tsai, Cox, y modelos de Nilsen ya que poseen una descripción matemática relativamente simple. Se seleccionó una matriz epóxica reforzada con fibra de carbono, fibra vidrio y Kenaf (fibra natural), puesto que estos rellenos se utilizan comúnmente en varios campos industriales y de investigación. Como resultado de la comparación entre los valores experimentales y los predichos modelos como el de Halpin-Tsai y el del módulo efectivo han mostrado una mejor concordancia con las mediciones experimentales de los materiales compuestos seleccionados.

    • English

      Analytical models for predicting the mechanical properties of composite materials are useful when experimental procedures are not feasible. This study presents a review of micromechanical analytical models used to predict the Young’s modulus of fiber-reinforced composites (FRC). The theoretical models assessed in this work include the series and parallel models, the effective modulus approach, the Halpin-Tsai equations, and the Cox and Nilsen models, due to their relatively simple mathematical descriptions. The study focused on an epoxy matrix reinforced with carbon fiber, E-glass, and Kenaf (a natural fiber), as these fillers are commonly used in various industrial and research applications. The comparison between experimental and predicted values indicates that models such as the Halpin-Tsai and effective modulus approach provide better agreement with the experimental measurements for the targeted composites.

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