Bearing strength and failure behavior of pinned hybrid glass-flax composite laminates

V. Fiore*, L. Calabrese, T. Scalici, P. Bruzzaniti, A. Valenza

*Corresponding author for this work

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The aim of the present work is to evaluate the influence of external layers of glass woven fabric on the pin-hole strength of flax/epoxy laminates. Single lap bearing tests were carried out to evaluate the fastened joint performances depending on laminate stacking sequence. In order to better identify the mechanical behavior of the hybrid laminate, full glass and flax laminates were also compared. In particular, bearing stress and failure mechanisms were investigated at varying joint geometry. Furthermore, an experimental failure map, clustering main failure modes of pinned hybrid composite laminate, was used to better clarify the relationship between mechanical failure and geometrical parameters of joints. The experimental results showed that the presence of external layers of glass fabric in a flax/epoxy laminate positively influences the mechanical performance of mechanically fastened joints. Furthermore, in a hybrid laminate, bearing fracture mechanism occurs for a large range of joint geometries, thus supporting the joining design of flax based composite laminates.

Original languageEnglish
Pages (from-to)310-319
JournalPolymer Testing
Volume69
Early online date28 Apr 2018
DOIs
Publication statusPublished - 01 Aug 2018
Externally publishedYes

Keywords

  • Bearing
  • Failure modes
  • Flax
  • Glass
  • Hybrid laminate
  • Mechanical joints

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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