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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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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1016/j.jeurceramsoc.2014.04.002

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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
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Funding agency for:
Vertyagina, Y
Publisher:
Elsevier Ltd Publisher's website
Journal:
Journal of the European Ceramic Society Journal website
Volume:
34
Issue:
12
Pages:
3127-3132
Publication date:
2014-10-05
DOI:
ISSN:
0955-2219
URN:
uuid:a629b668-f82b-4baa-8c41-d3e02df6e76b
Source identifiers:
466614
Local pid:
pubs:466614

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