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Observation of crack growth in a polycrystalline ferroelectric by synchrotron X-ray diffraction

Abstract:

Pre-cracked samples of unpoled, polycrystalline, soft ferroelectric lead zirconate titanate were subjected to electrical and mechanical loading whilst using synchrotron X-ray diffraction to map strain-fields. Clear evidence is found of switching around the crack tip and development of a crack-wake. A J-integral estimate based on strain-field data provided a sensitive measure of strain changes during loading. Electrical loading did not cause crack advance or crack-tip switching; this provides ...

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

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Publisher copy:
10.1016/j.scriptamat.2017.06.053

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Department:
Keble College
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Department:
Oxford, MPLS, Engineering Science
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Department:
Oxford, MPLS, Materials
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Department:
Oxford, MPLS, Materials
Hildersley, C More by this author
Publisher:
Elsevier Publisher's website
Journal:
Scripta Materialia Journal website
Volume:
140
Pages:
23–26
Publication date:
2017-07-07
Acceptance date:
2017-06-29
DOI:
ISSN:
1359-6454
Pubs id:
pubs:702936
URN:
uri:6f24e36c-8a12-45f5-80a9-4c09695f168c
UUID:
uuid:6f24e36c-8a12-45f5-80a9-4c09695f168c
Local pid:
pubs:702936

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