Browsing Staff publications (SAS) by Author "Fitzpatrick, M. E."

Now showing items 1-6 of 6

The effect of weld residual stresses and their re-distribution with crack growth during fatigue under constant amplitude loading

Liljedahl, C. D. M.; Zanellato, O.; Fitzpatrick, M. E.; Lin, J.; Edwards, L. (Elsevier, 2010-04)

In this work the evolution of the residual stresses in a MIG-welded 2024-T3 aluminium alloy M(T) specimen during in situ fatigue crack growth at constant load amplitude has been measured with neutron diffraction. The plastic ...
An Integrated Approach to the Determination and Consequences of Residual Stress on the Fatigue Performance of Welded Aircraft Structures.

Edwards, L.; Fitzpatrick, M. E.; Irving, Phil E.; Sinclair, I.; Zhang, X.; Yapp, David (2006-02-01)

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 ...
Life extension techniques for aircraft structures-Extending durability and promoting damage tolerance through bonded crack retarders

Irving, Phil E.; Zhang, Xiang; Doucet, J.; Figueroa-Gordon, Douglas J.; Boscolo, M.; Heinimann, M.; Shepherd, G.; Fitzpatrick, M. E.; Liljedahl, D. (2011-12-31)

This paper explores the viability of the bonded crack retarder concept as a device for life extension of damage tolerant aircraft structures. Fatigue crack growth behaviour in metallic substrates with bonded straps has ...
Problems in using a comb sample as a stress-free reference for the determination of welding residual stress by diffraction

Ganguly, Supriyo; Edwards, L.; Fitzpatrick, M. E. (Elsevier Science B.V., Amsterdam., 2010-12-31)

Precise measurement of a stress-free reference lattice parameter is vital in the determination of residual stress by diffraction techniques using θ/2θ-based analyses. For the evaluation of the residual strain profile in ...
Variation of mechanical properties in a multi-pass weld measured using digital image correlation

Acar, M.; Gungor, S.; Ganguly, Supriyo; Bouchard, P. J.; Fitzpatrick, M. E. (2009-06-04)

As part of a programme investigating the structural integrity of welds, the Digital Image Correlation (DIC)technique was used to obtain the full-field strain distribution during tensile testing of cross-weld specimens ...
Weld residual stress effects on fatigue crack growth behaviour of aluminium alloy 2024-T351

Liljedahl, C. D. M.; Brouard, J.; Zanellato, O.; Lin, J.; Tan, M. L.; Ganguly, Supriyo; Irving, Phil E.; Fitzpatrick, M. E.; Zhang, X.; Edwards, L. (Elsevier Science B.V., Amsterdam., 2009-06-30)

The interaction between residual stress and fatigue crack growth rate has been investigated in middle tension and compact tension specimens machined from a variable polarity plasma arc welded aluminium alloy 2024-T351 ...

Browsing Staff publications (SAS) by Author "Fitzpatrick, M. E."

Browsing Staff publications (SAS) by Author "Fitzpatrick, M. E."

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