Interlaminar fracture toughness of hybrid composites with non-woven tissue (1st report, mode I interlaminar fracture toughness)

Hiroshi Noguchi, Seung Hwan Lee, Young Bae Kim

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Abstract

Interlaminar fracture behavior of hybrid composites with non-woven carbon tissue is investigated under a Mode I loading condition with a DCI5 specimen. Hybrid composites are made by inserting non-woven tissue between prepreg layers. Two kinds of specimens are prepared from [0]24 and [012/ 012]. Here, the symbol "/" means that non-woven carbon tissue is located at a 0/0 mid-plane of the specimen. An initial interlaminar crack is introduced to a mid-plane of the specimen. Interlaminar fracture toughness (GIc) of hybrid composites is compared with that of CFRP. GIc of hybrid composites is almost dependent on only that of matrix resin. The fracture surfaces of the specimens are observed with an optical microscope and SEM, and the failure mechanism is discussed.

Original languageEnglish
Pages (from-to)1471-1476
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume67
Issue number661
Publication statusPublished - Dec 1 2001

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Fracture toughness
Tissue
Composite materials
Carbon
Carbon fiber reinforced plastics
Microscopes
Resins
Cracks
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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AB - Interlaminar fracture behavior of hybrid composites with non-woven carbon tissue is investigated under a Mode I loading condition with a DCI5 specimen. Hybrid composites are made by inserting non-woven tissue between prepreg layers. Two kinds of specimens are prepared from [0]24 and [012/ 012]. Here, the symbol "/" means that non-woven carbon tissue is located at a 0/0 mid-plane of the specimen. An initial interlaminar crack is introduced to a mid-plane of the specimen. Interlaminar fracture toughness (GIc) of hybrid composites is compared with that of CFRP. GIc of hybrid composites is almost dependent on only that of matrix resin. The fracture surfaces of the specimens are observed with an optical microscope and SEM, and the failure mechanism is discussed.

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