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Interlaminar fracture toughness of GFRP composites for insulating structure of magnet system

  • Jun Hee Song
  • , Hak Kun Kim
  • , Yonjig Kim*
  • *Corresponding author for this work
  • Jeonju University
  • National Fusion Research Institute
  • Jeonbuk National University

Research output: Contribution to journalJournal articlepeer-review

Abstract

In this study, the interlaminar fracture behaviors of laminated GFRP composites were investigated, and the results could be used for damage tolerance design based on fracture mechanics. Three types of laminated GFRP composites that can be used as high voltage insulating materials in magnet systems were fabricated in order to study the interlaminar fracture behavior according to the molding process. The values of interlaminar fracture toughness for the VPI, prepreg, and HPL laminate were 1.9 MPa.1/2, 1.7MPa-1/2, and 2.2MPa-1/2, respectively. HPL laminate showed the best fracture resistance. The failure modes of HPL and VPI were similar to that of an adhesive joint, and prepreg laminates showed partial cohesive failure mode due to internal voids.

Original languageEnglish
Pages (from-to)754-759
Number of pages6
JournalJournal of Korean Institute of Metals and Materials
Volume49
Issue number10
DOIs
StatePublished - 2011.10

Keywords

  • Composites
  • Fracture toughness
  • GFRP
  • Mechanical properties

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science
  • Mathematics

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