On the effect of binders on interlaminar fracture energies and R-curves of carbon/epoxy laminates with non-woven micro-fibre veils


Wang S., Akbolat M. Ç., İnal O., Katnam K. B., Zou Z., Potluri P., ...More

Composites Part A: Applied Science and Manufacturing, vol.162, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 162
  • Publication Date: 2022
  • Doi Number: 10.1016/j.compositesa.2022.107150
  • Journal Name: Composites Part A: Applied Science and Manufacturing
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Business Source Elite, Business Source Premier, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: A. Laminates, B. Debonding, B. Fracture toughness, D. Fractography
  • Istanbul Technical University Affiliated: No

Abstract

The effect of short micro-fibre-based veils on the mode-I and mode-II interlaminar fracture energies and R-curves of composite laminates is investigated in this study—with an emphasis on the role of veil binders. Non-woven polyphenylene sulfide veils with 10 g/m2 areal weight and two different binders (i.e. cross-linked styrene-acrylic and cross-linked polyester), and non-woven carbon veils with 10 g/m2 areal weight and four different binders (i.e. cross-linked styrene-acrylic, cross-linked polyester, polyester and polyvinyl alcohol) are used for interleaving composite laminates. Carbon/epoxy laminates are manufactured by vacuum-assisted resin infusion with out-of-autoclave curing. The mode-I and mode-II fracture behaviour of the laminates are investigated. The results show that the binders used in the manufacturing of veils can considerably affect the fracture energy, crack path and R-curve behaviour, and that the effect of binders is more pronounced in the laminates with carbon veils than in the laminates with PPS veils.