Tensile, impact, and mode-I behaviour of glass fiber-reinforced polymer composite modified by graphene nanoplatelets

G. V. Vigneshwaran, Balasivanandha Prabu Shanmugavel, R. Paskaramoorthy, Sivasankaran Harish

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This paper reports the tensile, impact, and mode-I behaviour of glass fiber-reinforced polymer (GFRP) composites modified by incorporating graphene nanoplatelets (GnPs) on the fiber surface and in the epoxy matrix. The composites were fabricated through a hand lay-up technique followed by hot compression moulding. The homogeneous dispersion of GnPs in the matrix was achieved by mechanical mixing followed by ultra-sonication. The glass fibers were coated with varying quantities of GnPs (GnPs in epoxy) by the dip-coating technique. The composites containing 1 wt% GnPs on both the fiber surface and the matrix (0.5 wt% deposited on the fiber and 0.5 wt% dispersed in epoxy) enhanced the impact resistance by 45% and tensile strength by 114% over the pristine composite. The mode-I fracture toughness of the composite containing 1 wt% GnPs on both the fiber surface and the matrix was increased by 55% with the crack parallel to the fiber direction and 64% in a crack perpendicular to the fiber direction over the pristine composite. The presence of GnPs at the fiber/matrix interface toughened the fiber surface by preventing the matrix from cracking.

Original languageEnglish
Article number94
JournalArchives of Civil and Mechanical Engineering
Volume20
Issue number3
DOIs
Publication statusPublished - Sep 1 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Mechanical Engineering

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