Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation
This paper aims to identify architectural features which lead to damage initiation and failure in discontinuous carbon fibre composites formed from randomly orientated bundles. A novel multi-camera digital image correlation system was used to simultaneously view strain fields from opposing surfaces...
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| Format: | Article |
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Elsevier
2015
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| Online Access: | https://eprints.nottingham.ac.uk/44612/ |
| _version_ | 1848796957922820096 |
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| author | Johanson, K. Harper, L.T. Johnson, Michael S. Warrior, N.A. |
| author_facet | Johanson, K. Harper, L.T. Johnson, Michael S. Warrior, N.A. |
| author_sort | Johanson, K. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This paper aims to identify architectural features which lead to damage initiation and failure in discontinuous carbon fibre composites formed from randomly orientated bundles. A novel multi-camera digital image correlation system was used to simultaneously view strain fields from opposing surfaces of coupons, in order to map progression of failure.
The highest strain concentrations were found to occur when the ends of fibre bundles aligned in the direction of loading coincided with underlying transverse bundles. The failure plane was observed to grow between a number of strain concentrations at critical features, coalescing sites of damage to create the final fracture surface. Although potential failure sites can be detected at low global strains in the form of strain concentrations, the strain field observed at low applied loads cannot be extrapolated to reliably predict final failure. |
| first_indexed | 2025-11-14T19:56:14Z |
| format | Article |
| id | nottingham-44612 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:56:14Z |
| publishDate | 2015 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-446122020-05-04T16:59:45Z https://eprints.nottingham.ac.uk/44612/ Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation Johanson, K. Harper, L.T. Johnson, Michael S. Warrior, N.A. This paper aims to identify architectural features which lead to damage initiation and failure in discontinuous carbon fibre composites formed from randomly orientated bundles. A novel multi-camera digital image correlation system was used to simultaneously view strain fields from opposing surfaces of coupons, in order to map progression of failure. The highest strain concentrations were found to occur when the ends of fibre bundles aligned in the direction of loading coincided with underlying transverse bundles. The failure plane was observed to grow between a number of strain concentrations at critical features, coalescing sites of damage to create the final fracture surface. Although potential failure sites can be detected at low global strains in the form of strain concentrations, the strain field observed at low applied loads cannot be extrapolated to reliably predict final failure. Elsevier 2015-01-31 Article PeerReviewed Johanson, K., Harper, L.T., Johnson, Michael S. and Warrior, N.A. (2015) Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation. Composites Part A: Applied Science and Manufacturing, 68 . pp. 304-312. ISSN 1359-835X Discontinuous reinforcement Preform Stress concentrations Damage initiation http://www.sciencedirect.com/science/article/pii/S1359835X14003261 doi:10.1016/j.compositesa.2014.10.014 doi:10.1016/j.compositesa.2014.10.014 |
| spellingShingle | Discontinuous reinforcement Preform Stress concentrations Damage initiation Johanson, K. Harper, L.T. Johnson, Michael S. Warrior, N.A. Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation |
| title | Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation |
| title_full | Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation |
| title_fullStr | Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation |
| title_full_unstemmed | Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation |
| title_short | Heterogeneity of discontinuous carbon fibre composites: damage initiation captured by Digital Image Correlation |
| title_sort | heterogeneity of discontinuous carbon fibre composites: damage initiation captured by digital image correlation |
| topic | Discontinuous reinforcement Preform Stress concentrations Damage initiation |
| url | https://eprints.nottingham.ac.uk/44612/ https://eprints.nottingham.ac.uk/44612/ https://eprints.nottingham.ac.uk/44612/ |