An Integrated Approach to the Determination and Consequences of Residual Stress on the Fatigue Performance of Welded Aircraft Structures
- 1 February 2006
- journal article
- other
- Published by ASTM International in Journal of ASTM International
- Vol. 3 (2), 1-17
- https://doi.org/10.1520/jai12547
Abstract
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 field data has been limited. Recent advances in neutron and synchrotron X-ray diffraction allow a far more detailed picture of weld residual stress fields 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.Keywords
This publication has 10 references indexed in Scilit:
- Comparative Neutron and Synchrotron X-Ray Diffraction Studies to Determine Residual Stress on an As-Welded AA2024 PlateMaterials Science Forum, 2005
- Damage Tolerance and Fail Safety of Welded Aircraft Wing PanelsAIAA Journal, 2005
- Micromechanical aspects of fatigue in a MIG welded aluminium airframe alloy: Part 1. Microstructural characterizationMaterials Science and Engineering: A, 2005
- Cross-sectional mapping of residual stresses in a VPPA weld using the contour methodActa Materialia, 2004
- Scientific Review: ENGIN-X: A Fully Refined Diffractometer Designed Specifically for Measurement of StressNeutron News, 2004
- Full Stress Tensor Determination in A textured Aerospace Aluminium Alloy Plate Using synchrotron X-Ray DiffractionTextures and Microstructures, 2003
- Neutron and Synchrotron X‐ray Strain ScanningStrain, 2001
- Recent development in aluminium alloys for aerospace applicationsMaterials Science and Engineering: A, 2000
- Fatigue Crack/Residual Stress Field Interactions and Their Implications for Damage-Tolerant DesignJournal of Materials Engineering and Performance, 1998
- Investigation of small fatigue cracks—II. A plasticity based model of small fatigue crack growthActa Metallurgica et Materialia, 1994