Ductile crack initiation and propagation assessed via in situ synchrotron radiation-computed laminography

Ductile crack initiation and propagation assessed via in situ synchrotron radiation-computed laminography

Ductile crack initiation and propagation within a naturally aged aluminium alloy sheet has been observed in situ via synchrotron radiation-computed laminography, a technique specifically adapted to three-dimensional imaging of thin objects that are laterally extended. Voids and intermetallic particl...

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Bibliographic Details
Published in:Scripta materialia Vol. 65; no. 11; pp. 1010 - 1013
Main Authors: Morgeneyer, T.F., Helfen, L., Sinclair, I., Proudhon, H., Xu, F., Baumbach, T.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-12-2011
Elsevier
Subjects:
Aluminium
Crack initiation
Crack propagation
Ductile fracture
Engineering Sciences
Evolution
Fracture mechanics
In situ laminography
Materials
Synchrotron radiation
Synchrotrons
Three dimensional
Tomography
Void growth
In situ laminography
Aluminium
Ductile fracture
Void growth
Synchrotron radiation
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Summary:Ductile crack initiation and propagation within a naturally aged aluminium alloy sheet has been observed in situ via synchrotron radiation-computed laminography, a technique specifically adapted to three-dimensional imaging of thin objects that are laterally extended. Voids and intermetallic particles, and their subsequent evolution during ductile crack extension at different associated levels of stress triaxiality, were clearly observed within fracture coupons of a reasonable engineering length-scale, overcoming the conventional sample size limitation of computed tomography at high resolutions.
Bibliography:ObjectType-Article-2
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ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2011.09.005