Comparison of push-in and push-out tests for measuring interfacial shear strength in nano-reinforced composite materials

MEDINA, C.; MOLINA, J.; GONZÁLES, C.; MELENDREZ, M.; FLORES, P.; LLORCA, J.
Journal of Composite Materials 49 (2015) 1-9.

DOI: 10.1177/0021998315595115

Abstract

The influence of the carbon nanotubes (CNTs) content on the fiber/matrix interfacial shear strength (IFSS) in glass/fiber epoxy composites was measured by means of push-in and push-out tests. Both experimental methodologies provided equivalent values of the IFSS for each material. It was found that the dispersion of CNTs increased in IFSS by 19% in average with respect to the composite without CNTs. This improvement was reached with 0.3 wt.% of CNTs and increasing the CNT content up to 0.8 wt.% did not improve the interface strength.

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