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High strain rate indentation-induced deformation in alumina ceramics measured by Cr3+ fluorescence mapping
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Dancer, Claire E. J., Curtis, H. M., Bennett, S. M., Petrinic, N. and Todd, R. I. (2011) High strain rate indentation-induced deformation in alumina ceramics measured by Cr3+ fluorescence mapping. Journal of the European Ceramic Society, Vol.31 (No.13). pp. 2177-2187. doi:10.1016/j.jeurceramsoc.2011.06.002 ISSN 0955-2219.
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Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2011.06.0...
Abstract
Alumina materials with a range of grain sizes and purities were subjected to small-scale dynamic impact by sharpened tungsten carbide projectiles at sub-ballistic velocities. The resistance of the materials to fracture was recorded by visual examination of the cracking on the impacted surface and the damage in the subsurface region. The residual stress and plastic deformation induced in each material were examined using Cr3+ fluorescence mapping. A modified Hertzian indentation model of the stress state in the material with the addition of a blister field representing the stress induced by the presence of the subsurface plastic zone was found accurately describe the observed cracks beneath the surface of the material, as well as the radial cracks on the surface.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Journal of the European Ceramic Society | ||||
Publisher: | Elsevier Ltd | ||||
ISSN: | 0955-2219 | ||||
Official Date: | November 2011 | ||||
Dates: |
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Volume: | Vol.31 | ||||
Number: | No.13 | ||||
Page Range: | pp. 2177-2187 | ||||
DOI: | 10.1016/j.jeurceramsoc.2011.06.002 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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