Effect of fiber misalignment and environmental temperature on the compressive behavior of fiber composites

This experimental study investigated how defects, in particular fiber misalignment, affect the mechanical behavior of glass fiber composites (GFRP) under compressive loading. GFRP cross-plies with three different types of fiber misalignment, namely a fold, a wave, and an in-plane undulation, were fabricated using the resin transfer molding process. The compressive tests were performed at four different temperatures, in order to investigate the role of a change in the matrix properties on the strength of the composite. The experiments showed that the defects, especially at lower temperatures, had a significant impact on the mechanical properties of the composite, exceeding the proportion of the defects inside the composite. With increasing temperature, the damage mechanism changed from fiber-dominated to matrix-dominated and, in doing so, decreased the significance of fiber misalignment for the mechanical behavior.

Subjects

thermoset

glass fibers

GFRP

mechanical testing

defects

DDC Class

540: Chemistry

Funding(s)

Analyse des Einflusses der Temperatur auf das Werkstoffverhalten an Faserfehlorientierungen

Publication version

publishedVersion

Lizenz

https://creativecommons.org/licenses/by/4.0/

Name

polymers-15-02833.pdf

Type

Main Article

Size

38.03 MB

Format

Adobe PDF

Options

Effect of fiber misalignment and environmental temperature on the compressive behavior of fiber composites