FEA evaluation of the Al4C3 formation effect on the Young's modulus of carbon nanotube reinforced aluminum matrix composites
Por:
Alfonso I., Navarro O., Vargas J., Beltrán A., Aguilar C., González G., Figueroa I.A.
Publicada:
1 sep 2015
Resumen:
The effect on Young's modulus of Al4C3 formation in the carbon nanotube (CNT)-Al interface, for Al matrix composites, was analyzed using Finite Elements Analysis (FEA) models, incorporating different CNT volume fractions and interfacial Al4C3 layers of various thicknesses. Reinforcements were modeled with and without the hemispherical end caps that characterize CNT. FEA estimations were compared to the Rule of Mixtures predictions. Results showed that the elastic modulus of the composites significantly rises as the CNT volume fraction increases, while the increase in the Al4C3 layer thickness provokes a slight increment in the Young's modulus. This could be attributed to a combined reinforcement effect of the CNT and the interface. The inclusion of CNT with hemispherical end caps in the FEA model drops the estimated Young's modulus. Finally, the results presented in this work demonstrated the importance of the model selection for analyzing the mechanical behavior of the composites. © 2015 Elsevier Ltd.
Filiaciones:
Alfonso I.:
Univ Nacl Autonoma Mexico, Unidad Morelia, Inst Invest Mat, Morelia 58190, Michoacan, Mexico
Navarro O.:
Univ Nacl Autonoma Mexico, Unidad Morelia, Inst Invest Mat, Morelia 58190, Michoacan, Mexico
Vargas J.:
Univ Nacl Autonoma Mexico, Unidad Morelia, Inst Invest Mat, Morelia 58190, Michoacan, Mexico
Beltrán A.:
Univ Nacl Autonoma Mexico, Unidad Morelia, Inst Invest Mat, Morelia 58190, Michoacan, Mexico
Aguilar C.:
Departamento de Ingeniería Metalúrgica y Materiales, Universidad Técnica Federico Santa María, Av. España 1680, Casilla 110-V, Valparaíso, Chile
González G.:
Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
Figueroa I.A.:
Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
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