Stefanescu, D.; Steuwer, A.; Owen, R. A.; Nadri, B.; Edwards, L.; Fitzpatrick, M. E. and Withers, P. J.
|DOI (Digital Object Identifier) Link:||http://doi.org/10.1243/0309324041896470|
|Google Scholar:||Look up in Google Scholar|
In this work, the capability of the synchrotron X-ray diffraction technique to measure changes in the residual strains caused by fatigue crack growth from cold-expanded holes in an aluminium alloy plate has been investigated. The measurement technique was validated by comparing the synchrotron measurements around uncracked holes with those obtained on similar specimens using the neutron diffraction and Sachs' techniques. Measurements were performed with and without superimposed tensile mechanical loading and the results compared with analytical results. The improved spatial resolution of the synchrotron technique relative to the other methods has allowed the strain fields around a fatigue crack growing from a cold-expanded hole to be evaluated in the unloaded state and at two loading levels. Only at the higher load does the crack appear to open along its full length.
|Item Type:||Journal Article|
|Academic Unit/Department:||Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
|Depositing User:||Michael E. Fitzpatrick|
|Date Deposited:||11 Jul 2006|
|Last Modified:||02 Aug 2016 12:59|
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