SYMPOSIA PAPER Published: 01 January 2007
STP45330S

An Integrated Approach to the Determination and Consequences of Residual Stress on the Fatigue Performance of Welded Aircraft Structures

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Although residual stress in welded structures and components has long been known to have an effect on their fatigue performance, access to reliable, spatially accurate residual stress .eld data has been limited. Recent advances in neutron and synchrotron X-ray diffraction allow a far more detailed picture of weld residual stress .elds to be obtained that permits the development and use of predictive models that can be used for accurate design against fatigue in aircraft structures. This paper describes a fully integrated study of the three-dimensional residual stress distribution accompanying state-of-the-art fusion welds in 2024-T4 aluminum alloy, and how it is affected by subsequent machining and service loading. A particular feature of this work has been the development of techniques allowing the nondestructive evaluation of the residual stress field in the full range of specimens used to provide the design data required for welded aircraft structures and the integration of this information into all aspects of damage tolerant design.

Author Information

Edwards, L.
Dept of Materials Engineering, Open University, Milton Keynes, UK
Fitzpatrick, M., E.
Dept of Materials Engineering, Open University, Milton Keynes, UK
Irving, P., E.
School of Industrial and Manufacturing Sciences, Cranfield University, Cranfield, Bedfordshire
Sinclair, I.
School of Engineering, Southampton University, Southampton, UK
Zhang, X.
School of Engineering, Cranfield University, Cranfield, Bedfordshire, UK
Yapp, D.
School of Industrial and Manufacturing Sciences, Cranfield University, Cranfield, Bedfordshire, UK
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Details
Developed by Committee: E08
Pages: 116–132
DOI: 10.1520/STP45330S
ISBN-EB: 978-0-8031-6238-9
ISBN-13: 978-0-8031-4472-9