Interface characterization in fiber-reinforced polymer-matrix composites Articles uri icon

published in

  • JOM  Journal

publication date

  • January 2017

start page

  • 13

end page

  • 21

issue

  • 1

volume

  • 69

International Standard Serial Number (ISSN)

  • 1047-4838

Electronic International Standard Serial Number (EISSN)

  • 1543-1851

abstract

  • A novel methodology is presented and applied to measure the shear interface strength of fiber-reinforced polymers. The strategy is based in fiber push-in tests carried out on the central fiber of highly-packed fiber clusters with hexagonal symmetry, and it is supported by a detailed finite element analysis of the push-in test to account for the influence of hygrothermal residual stresses, fiber constraint and fiber anisotropy on the interface strength. Examples of application are presented to determine the shear interface strength in carbon and glass fiber composites reinforced with either thermoset or thermoplastic matrices. In addition, the influence of the environment (either dry or wet conditions) on the interface strength in C/epoxy composites is demonstrated.

subjects

  • Mechanical Engineering

keywords

  • residual stress; fiber volume fraction; matrix interface; interface strength; shear interface strength