Mixed Mode delamination of multidirectional carbon fibre/epoxy laminates
|Title:||Mixed Mode delamination of multidirectional carbon fibre/epoxy laminates||Authors:||Svensson, N.
Gilchrist, M. D.
|Permanent link:||http://hdl.handle.net/10197/4778||Date:||1998||Abstract:||Scanning electron microscopy was used to identify fractographic features that are characteristic of different modes of interlaminar fracture. The cusp angle and the amount of fiber pull-out on the fracture surface can be used to characterize the different loading modes. A large amount of fiber pull-out is the dominant feature of a mode I fracture, while in mode II large cusp angles and many cusps are the main characteristics. The amount of fiber pull-out, and subsequently brokenfibers, per unit area was investigated and found to vary in proportion to the degree of mode I loading. Such methods can be used to analyze failure and the propagation ofdelamination in structural components. The energy associated with cusp formation constitutes a large proportion of the mode IIfracture toughness component, while the amount of fiber pull-out and fracture has a considerable influence on the mode I fracture component. The cusp angle was seen to provide a quantitative measure of the fracture surface roughness. A failure criterion that takes the fracture surface appearance into account was evaluated. The cusp angle was subsequently used to modify this failure criterion. As a consequence, this provided improved agreement with the experimental data.||Type of material:||Journal Article||Publisher:||Taylor and Francis||Copyright (published version):||1998 Taylor and Francis||Keywords:||carbon fibre/epoxy laminates;mixed mode||DOI:||10.1080/10759419808945903||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Mechanical & Materials Engineering Research Collection|
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