Experimental investigation of quasi-static behavior of composite and fiber metal laminate panels modified by graphene nanoplatelets

Azadeh Fathi, Gholamhossein Liaghat, Hadi Sabouri, Mahmoud Chizari, Homayoun Hadavinia, Sahand Chitsaz Charandabi

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Abstract

The current study investigated the influence of incorporation of graphene nanoplatelets (GNPs) on quasi-static behavior of composite and fiber metal laminate (FML) panels. The unmodified and modified composite specimens and FML panels with 2/1 configuration were fabricated using a hand lay-up method and investigated through a quasi-static punch and indentation testing. The two sets of tests were conducted with a flat-ended indenter and the loading conditions were the same for all samples, except support spans which were varied. Following experimental testing, possible damages at the punch region were closely investigated and localized and global damages were observed. The results revealed that adding 0.2 wt% GNPs improved the strength and fracture toughness of specimens by delaying the failure modes. On the contrary, GNPs made the bonding between the aluminum and composite interface to weaken.
Original languageEnglish
Pages (from-to)518-532
Number of pages15
JournalJournal of Reinforced Plastics and Composites
Volume40
Issue number13-14
Early online date31 Mar 2021
DOIs
Publication statusPublished - 1 Jul 2021

Keywords

  • Composite
  • fiber metal laminate
  • graphene nanoplatelets
  • indentation
  • punch
  • quasi-static

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