Fractographic relation between progressive failure and strain measurement techniques for recently developed configuration of carbon fiber/epoxy laminate
Por:
Mayen, Jan, Abundez, Arturo, Alcudia, Enrique, Antonio Arellano, Jose, Colin, Jorge, Pereyra, Isa, Puente-Lee, Ivan
Publicada:
1 feb 2017
Resumen:
In this work, fracture mechanisms of a newly developed carbon fiber/epoxy laminate [+75/0/-75]s were assessed by scanning electron microscopy (SEM). The composite strain-stress curves were plotted with the displacement information simultaneously acquired from both a tensile testing machine crosshead and an extensometer. The strain-stress curve plotted with the displacement data from the machine test showed an average slope change from E1m = 22.783 GPa to E2m = 13.170 GPa on about 65% of the total strain before global failure, while strain-stress curves plotted with displacement data from the extensometer showed one single slope. While results reported in literature related to composite failure mechanisms, where some authors reported a slope change in strain-stress curves associated to progressive failure, experimental evidence in this work for strain-stress curves showed one single slope, indicating that such slope change is related to the strain measuring technique, and not to a progressive failure. The fracture surface was studied, and four main features were observed, which were related to failure mechanisms during the uniaxial test. The identified failure mechanisms occurred on a stage above 93% of the total strain before global failure. © 2016 Elsevier Ltd
Filiaciones:
Mayen, Jan:
Ctr Nacl Invest & Desarrollo Tecnol CENIDET, Tecnol Nacl Mexico, Prolongac Palmira S-N Esq, Cuernavaca, Morelos, Mexico
Abundez, Arturo:
Ctr Nacl Invest & Desarrollo Tecnol CENIDET, Tecnol Nacl Mexico, Prolongac Palmira S-N Esq, Cuernavaca, Morelos, Mexico
Alcudia, Enrique:
Ctr Nacl Invest & Desarrollo Tecnol CENIDET, Tecnol Nacl Mexico, Prolongac Palmira S-N Esq, Cuernavaca, Morelos, Mexico
Antonio Arellano, Jose:
Ctr Nacl Invest & Desarrollo Tecnol CENIDET, Tecnol Nacl Mexico, Prolongac Palmira S-N Esq, Cuernavaca, Morelos, Mexico
Colin, Jorge:
Ctr Nacl Invest & Desarrollo Tecnol CENIDET, Tecnol Nacl Mexico, Prolongac Palmira S-N Esq, Cuernavaca, Morelos, Mexico
Pereyra, Isa:
Univ Autonoma Estado Morelos, CIICAp, FCQel, Av Univ 1001, Cuernavaca 62209, Morelos, Mexico
Puente-Lee, Ivan:
Univ Nacl Autonoma Mexico, Fac Quim, ICF, Coyoacan 04510, DF, Mexico
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