Effect of interleaved non-woven carbon tissue on interlaminar fracture toughness of laminated composites: Part II - Mode I

Seung Hwan Lee, Hiroshi Noguchi, Young Bae Kim, Seong Kyun Cheong

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Interlaminar fracture behavior of non-woven carbon tissue (NWCT) interleaved composites was investigated under a Mode I loading condition using a double-cantilever-beam (DCB) specimen. The NWCT interleaved specimens were made by interleaving NWCT-prepregs between CFRP layers. CFRP specimen ([024]), NWCT interleaved specimen ([012/Tn/012]) and NWCT composite specimen ([T80]) were prepared under the same cure condition of the CFRP specimen. The symbol "/Tn/" means that the NWCT layer is located at the 0/0 mid-plane of the interleaved specimen, and n is the number of NWCT layers. The NWCT has short carbon fibers, discretely distributed with in-plane random orientation fibers. An interlaminar crack is introduced to a center of the interleaved specimens. The DCB testing results were analyzed using the normal distribution. When the short carbon fiber volume fraction in the NWCT layer is about 10%, the Mode I interlaminar fracture toughness of the NWCT interleaved specimen is about 28% higher than that of the CFRP specimen due to the fiber breakage of out-of-plane oriented short carbon fibers in the NWCT layer. The fracture process on the side-section and fracture surfaces of the interleaved specimen was observed with an optical microscope and a scanning electron microscope, and the failure mechanism was discussed.

Original languageEnglish
Pages (from-to)2169-2181
Number of pages13
JournalJournal of Composite Materials
Volume36
Issue number18
DOIs
Publication statusPublished - Oct 9 2002

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Laminated composites
Fracture toughness
Carbon
Tissue
Carbon fiber reinforced plastics
Carbon fibers
Cantilever beams
Coal breakage
Composite materials
Normal distribution
Fiber reinforced materials
Volume fraction
Microscopes
Electron microscopes
Cracks
Scanning

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Chemistry

Cite this

Effect of interleaved non-woven carbon tissue on interlaminar fracture toughness of laminated composites : Part II - Mode I. / Lee, Seung Hwan; Noguchi, Hiroshi; Kim, Young Bae; Cheong, Seong Kyun.

In: Journal of Composite Materials, Vol. 36, No. 18, 09.10.2002, p. 2169-2181.

Research output: Contribution to journalArticle

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