Measuring strain energy release rate (GIc) in novel fibre shape composites

The poor through-thickness properties of continuous fibre reinforced plastics are a major concern for their wider use. A new approach, based upon fibres of novel cross-section, is currently being evaluated. Correct selection of the fibre shape could allow extensive load transfer by mechanical interl...

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Veröffentlicht in:	Composites science and technology 2006-08, Vol.66 (10), p.1239-1247
Hauptverfasser:	Harris, J., Bond, I.P., Weaver, P.M., Wisnom, M.R., Rezai, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	A. Fibres Applied sciences B. Fracture toughness B. Interfacial strength Exact sciences and technology Forms of application and semi-finished materials Laminates Polymer industry, paints, wood Strain energy release rate Technology of polymers
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Beschreibung
Zusammenfassung:	The poor through-thickness properties of continuous fibre reinforced plastics are a major concern for their wider use. A new approach, based upon fibres of novel cross-section, is currently being evaluated. Correct selection of the fibre shape could allow extensive load transfer by mechanical interlocking of the fibres and matrix as well as by interfacial bonding over a larger surface area. Shaped and circular fibre composites were prepared and Mode I Double Cantilever Beam (DCB) testing of 0°/0°, 0°/45° and 0°/90° interfaces was undertaken. The Mode I DCB testing indicated that shaped fibres can provide >50% improvement in strain energy release rate (GIc) over circular fibres.
ISSN:	0266-3538 1879-1050
DOI:	10.1016/j.compscitech.2005.10.034