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
Ramamoorthy, Amsarani
Ivankovic, Alojz
et al.
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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