Fracture behaviour of a rapidly cured polyethersulfone toughened carbon fibre/epoxy composite

Agius, Steven L., Magniez, Kevin J. C. and Fox, Bronwyn L. 2010, Fracture behaviour of a rapidly cured polyethersulfone toughened carbon fibre/epoxy composite, Composite structures, vol. 92, no. 9, pp. 2119-2127, doi: 10.1016/j.compstruct.2009.09.045.

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Title Fracture behaviour of a rapidly cured polyethersulfone toughened carbon fibre/epoxy composite
Author(s) Agius, Steven L.
Magniez, Kevin J. C.
Fox, Bronwyn L.
Journal name Composite structures
Volume number 92
Issue number 9
Start page 2119
End page 2127
Total pages 9
Publisher Elsevier
Place of publication Kidlington, England
Publication date 2010-08
ISSN 0263-8223
Keyword(s) epoxy resin
fracture toughness
mode I
mode II
fibre bridging
Summary An out-of-autoclave rapid heating/low pressure technique has been used to cure polyethersulfone (PES) toughened HexPly 8552. Mode I and mode II tests were conducted to evaluate the fracture toughness of the composites and the effectiveness of cure was determined through thermal analysis. When compared to the autoclave process, the out-of-autoclave process resulted in a 52% reduction in processing time, without any sacrifice to the matrix intrinsic properties. Thermal analysis indicated an 8 °C improvement in glass transition temperature (Tg) as a result of an increased degree of cure. The out-of-autoclave process did lack in the ability to facilitate the removal of porosity which affected the fracture toughness results. The porosity is believed to have increased the mode I propagation fracture toughness. However its effect on mode II was quite deleterious, shown by scanning electron microscopy (SEM). This study managed to identify a number of key parameters associated with the out-of-autoclave process essential for further optimisation.
Language eng
DOI 10.1016/j.compstruct.2009.09.045
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2009, Elsevier Ltd.
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Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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