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In situ quantitative three-dimensional characterisation of sub-indentation cracking in polycrystalline alumina

Abstract:

The three-dimensional deformation beneath a Vickers indentation in polycrystalline alumina has been measured, in situ, by digital volume correlation of high resolution synchrotron X-ray computed tomographs. The displacement fields at the peak indentation load and after unloading are used to study the shape and orientation of sub-surface cracks induced by the indentation; lateral cracking due to residual stresses, bounded by a system of radial cracks, is revealed. For the first time, it is sho...

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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
Publisher:
Elsevier Ltd
Journal:
Journal of the European Ceramic Society
Volume:
34
Issue:
12
Pages:
3127-3132
Publication date:
2014-01-01
DOI:
ISSN:
0955-2219
URN:
uuid:5096e125-299a-4c01-82e5-e592514916a4
Source identifiers:
470015
Local pid:
pubs:470015
Language:
English
Keywords:

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