Effect of an Atmospheric Pressure Plasma Treatment on the Mode I Fracture Toughness of a Co-cured Composite Joint
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|Title:||Effect of an Atmospheric Pressure Plasma Treatment on the Mode I Fracture Toughness of a Co-cured Composite Joint||Authors:||Mohan, Joseph
|Permanent link:||http://hdl.handle.net/10197/4667||Date:||21-Apr-2014||Abstract:||In this study, the surface of a composite prepreg was treated using an atmospheric pressure plasma in an attempt to improve the fracture toughness of a co-cured joint system. Three gas mixtures were investigated; Helium, Helium/Nitrogen and Helium/Oxygen. The processing parameters of the system were varied to obtain the maximum increase in surface energy of the prepreg. A He/O2 plasma was found to be the most efficient treatment, giving the largest increase in surface energy in the shortest time. Co-cured joints were then fabricated using prepreg that had been treated with various plasmas. A modest 15–18% increase in the mode I fracture toughness was achieved. However, the locus of failure remained interfacial. It was also observed that a He/O2 plasma treatment could be detrimental to joint toughness for long treatment times.||Type of material:||Journal Article||Publisher:||Informa UK (Taylor & Francis)||Copyright (published version):||2013 Informa UK (Taylor & Francis)||Keywords:||Composites;Fracture mechanics;Surface treatment by excited gases (eg. flame, corona, plasma)||DOI:||10.1080/00218464.2013.772053||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Mechanical & Materials Engineering Research Collection|
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