Currently browsing: Items authored or edited by Lyndon Edwards

Bacon, D.H.; Edwards, L.; Moffatt, J. E. and Fitzpatrick, M. E. (2013). Fatigue and fracture of a 316 stainless steel metal matrix composite reinforced with 25% titanium diboride. International Journal of Fatigue, 48 pp. 39–47.

• Download Accepted Manuscript (PDF / 1MB)

Moffatt, J. E.; Fitzpatrick, M. E. and Edwards, L. (2013). Effect of frequency on high-temperature fatigue crack growth in a silicon carbide reinforced silicon nitride composite. International Journal of Fatigue, 47 pp. 319–329.

Liljedahl, C. D. M.; Fitzpatrick, M. E.; Zanellato, O. and Edwards, L. (2011). Effect of temperature on the residual stresses in an integral structure with a crack-retarding patch. Strain, 47(S2) pp. 293–298.

Khan, M. K.; Fitzpatrick, M. E.; Hainsworth, S. V.; Evans, A. D. and Edwards, L. (2011). Application of synchrotron X-ray diffraction and nanoindentation for the determination of residual stress fields around scratches. Acta Materialia, 59(20) pp. 7508–7520.

Bacon, D. H.; Edwards, L.; Moffatt, J. E. and Fitzpatrick, M. E. (2011). Synchrotron X-ray diffraction measurements of internal stresses during loading of steel-based metal matrix composites reinforced with TiB₂ particles. Acta Materialia, 59(9) pp. 3373–3383.

Khan, M. K.; Hainsworth, S. V.; Fitzpatrick, M. E. and Edwards, L. (2010). A combined experimental and finite element approach for determining mechanical properties of aluminium alloys by nanoindentation. Computational Materials Science, 49(4) pp. 751–760.

Steuwer, A.; Rahman, M; Shterenlikht, A.; Fitzpatrick, M. E.; Edwards, L. and Withers, P.J. (2010). The evolution of crack-tip stresses during a fatigue overload event. Acta Materialia, 58(11) pp. 4039–4052.

Liljedahl, C. D. M.; Zanellato, O.; Fitzpatrick, M. E.; Lin, J. and Edwards, L. (2010). The effect of weld residual stresses and their re-distribution with crack growth during fatigue under constant amplitude loading. International Journal of Fatigue, 32(4) pp. 735–743.

• Download Accepted Manuscript (PDF / 1MB)

Ganguly, S.; Edwards, L. and Fitzpatrick, M. E. (2010). Problems in using a comb sample as a stress-free reference for the determination of welding residual stress by diffraction. Materials Science and Engineering A, 528(3) pp. 1226–1232.

• Download Accepted Manuscript (PDF / 852kB)

Turski, M.; Smith, M. C.; Bouchard, P. J.; Edwards, L. and Withers, P. J. (2009). Spatially resolved materials property data from a uniaxial cross-weld tensile test. Journal of Pressure Vessel Technology, 131(6) pp. 1–7.

Liljedahl, C. D. M.; Fitzpatrick, M. E. and Edwards, L. (2009). Evolution of residual stresses with fatigue crack growth in integral structures with crack retarders. Materials Science and Engineering A, 523(1-2) pp. 152–159.

• Download Accepted Manuscript (PDF / 1MB)

Liljedahl, C. D. M.; Brouard, J.; Zanellato, O.; Lin, J.; Tan, M. L.; Ganguly, S.; Irving, P. E.; Fitzpatrick, M. E.; Zhang, X. and Edwards, L. (2009). Weld residual stress effects on fatigue crack growth behaviour of aluminium alloy 2024-T351. International Journal of Fatigue, 31(6) pp. 1081–1088.

Khan, M. K.; Hainsworth, S. V.; Fitzpatrick, M. E. and Edwards, L. (2009). Application of the work of indentation approach for the characterization of aluminium 2024-T351 and Al cladding by nanoindentation. Journal of Materials Science, 44(4) pp. 1006–1015.

Turski, M. and Edwards, L. (2009). Residual stress measurement of a 316l stainless steel bead-on-plate specimen utilising the contour method. International Journal of Pressure Vessels and Piping, 86(1) pp. 126–131.

Pratihar, S.; Turski, M.; Edwards, L. and Bouchard, P. J. (2009). Neutron diffraction residual stress measurements in a 316L stainless steel bead-on-plate weld specimen. International Journal of Pressure Vessels and Piping, 86(1) pp. 13–19.

Khan, M. K.; Fitzpatrick, M. E.; Hainsworth, S. V. and Edwards, L. (2009). Effect of tool profile and fatigue loading on the local hardness around scratches in clad and unclad aluminium alloy 2024. Materials Science and Engineering A, 527(1-2) pp. 297–304.

• Download Accepted Manuscript (PDF / 952kB)

Liljedahl, C. D. M.; Fitzpatrick, M. E. and Edwards, L. (2008). Residual stresses in structures reinforced with adhesively bonded straps designed to retard fatigue crack growth. Composite Structures, 86(4) pp. 344–355.

Liljedahl, C. D. M.; Zanellato, O.; Edwards, L. and Fitzpatrick, M. E. (2008). Evolution of Residual Stresses with Fatigue Crack Growth in a Variable Polarity Plasma Arc–Welded Aluminum Alloy Compact Tension Specimen. Metallurgical and Materials Transactions A, 39(10) pp. 2370–2377.

Kartal, M. E.; Liljedahl, C. D. M.; Gungor, S.; Edwards, L. and Fitzpatrick, M. E. (2008). Determination of the profile of the complete residual stress tensor in a VPPA weld using the multi-axial contour method. Acta Materialia, 56(16) pp. 4417–4428.

Ganguly, S.; Stelmukh, V.; Fitzpatrick, M. E. and Edwards, L. (2008). Analysis of residual stress in metal-inert-gas-welded Al-2024 using neutron and synchrotron X-ray diffraction. Materials Science and Engineering A, 491(1-2) pp. 248–257.

Liljedahl, C. D. M.; Tan, M. L.; Zanellato, O.; Ganguly, S.; Fitzpatrick, M. E. and Edwards, L. (2008). Evolution of residual stresses with fatigue loading and subsequent crack growth in a welded aluminium alloy middle tension specimen. Engineering Fracture Mechanics, 75(13) pp. 3881–3894.

Liljedahl, C. D. M.; Fitzpatrick, M. E. and Edwards, L. (2008). Distortion and residual stresses in structures reinforced with titanium straps for improved damage tolerance. Materials Science and Engineering A, 486(1-2) pp. 104–111.

Moffatt, J. E. and Edwards, L. (2008). Effect of frequency on ambient temperature fatigue crack growth in a silicon carbide reinforced silicon nitride composite. International Journal of Fatigue, 30(7) pp. 1289–1297.

Withers, P. J.; Turski, M.; Edwards, L.; Bouchard, P. J. and Buttle, D. J. (2008). Recent advances in residual stress measurement. International Journal of Pressure Vessels and Piping, 85(3) pp. 118–127.

Rahman, M.; Fitzpatrick, M.E.; Edwards, L.; Pratihar, S.; Peel, M.E.; Steuwer, A. and Buslaps, T. (2008). Investigation of the stress fields around a fatigue crack in aluminium alloy 5091. Materials Science Forum, 571-572 pp. 119–124.

Ganguly, S.; Pratihar, S.; Fitzpatrick, M.E. and Edwards, L. (2008). Study of residual stress distribution in a stainless steel bead-on-plate simulation benchmark sample. Materials Science Forum, 571-572 pp. 367–373.

Edwards, Lyndon; Smith, Mike C.; Turski, Mark; Fitzpatrick, Mike E and Bouchard, P. John (2008). Advances in residual stress modeling and measurement for the structural integrity assessment of welded thermal power plant. Advanced Materials Research, 41-42 pp. 391–400.

Zanellato, O.; Fitzpatrick, M.E.; Daymond, M.R.; Edwards, L. and Turski, M. (2008). Development of Intergranular Stresses during In-situ Compression Tests in Zircaloy-4. Materials Science Forum, 571-572 pp. 149–154.

Ganguly, S.; Turski, M.; Fitzpatrick, M. E.; Edwards, L.; Smith, M. C. and Bouchard, P. J. (2008). Full field measurement of plastic flow properties in a multi-pass austenitic stainless steel weld specimen. In: O'Dowd, N. P. ed. Proceedings of the ASME Pressure Vessels and Piping Conference (PVP2008), Volume Vol 6,. ASME, pp. 403–414.

Ahmed, R.; Yu, H. Q.; Stoica, V.; Edwards, L. and Santisteban, J. R. (2008). Neutron diffraction residual strain measurements in post-treated thermal spray cermet coatings. Materials Science and Engineering A, 498(1-2) pp. 191–202.

Mulyadi, M.; Rist, M.; Edwards, L.; Brooks, J. W. and Wilson, A. F. (2007). A hot deformation model for two-phase titanium alloys based on an internal state-variable approach. In: Niinomi, M.; Akiyama, S.; Ikeda, M.; Hagiwara, M. and Maruyama, K. eds. Ti-2007 Science and Technology, Volume 1. Sendai, Japan: The Japan Institute of Metals, pp. 315–318.

Tan, Jeffrey Meng-Lee; Fitzpatrick, Michael E. and Edwards, Lyndon (2007). Stress intensity factors for through-thickness cracks in a wide plate: Derivation and application to arbitrary weld residual stress fields. Engineering Fracture Mechanics, 74(13) pp. 2030–2054.

Pratihar, S.; Ganguly, S.; James, J. A.; Fitzpatrick, M. E. and Edwards, L. (2007). Non-destructive determination of the 3D residual stress in a AA7050 upper wing skin-stringer panel using neutron diffraction. Journal of Neutron Research, 15(3-4) pp. 293–301.

James, Jonathan A. and Edwards, Lyndon (2007). Application of robot kinematics methods to the simulation and control of neutron beam line positioning systems. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 571(3) pp. 709–718.

Kartal, M.; Molak, R.; Turski, M.; Gungor, S.; Fitzpatrick, M. E. and Edwards, L. (2007). Determination of weld metal mechanical properties utilising novel tensile testing methods. Applied Mechanics and Materials, 7-8 pp. 127–132.

Ahmed, R.; Yu, H.; Stewart, S.; Edwards, L. and Santisteban, J. R. (2007). Residual strain measurements in thermal spray cermet coatings via neutron diffraction. Journal of Tribology, 129(2) pp. 411–418.

Molak, R. M.; Kartal, M.; Pakiela, Z.; Manaj, W.; Turski, M.; Hiller, S.; Gungor, S.; Edwards, L. and Kurzydłowski, K. J. (2007). Use of micro tensile test samples in determining the remnant life of pressure vessel steels. Applied Mechanics and Materials, 7-8 pp. 187–194.

Santisteban, J.R.; Daymond, M.R.; James, J.A. and Edwards, L. (2006). ENGIN-X: A third-generation neutron strain scanner. Journal of Applied Crystallography, 39(6) pp. 812–825.

Santisteban, J. R.; Oliver, E. C.; Daymond, M. R.; Alianelli, L. and Edwards, L. (2006). Tensile deformation of a Cu mosaic crystal along the [110] direction studied by time of flight neutron transmission. Materials Science and Engineering A, 437(1) pp. 151–156.

Mulyadi, M.; Rist, M.A.; Edwards, L. and Brooks, J.W. (2006). Parameter optimisation in constitutive equations for hot forging. Journal of Materials Processing Technology, 177(1-3) pp. 311–314.

Turski, M.; Edwards, L.; James, J.; Bouchard, P. J.; Smith, M. C. and Withers, P. J. (2006). Residual stress measurement within a single pass groove weld specimen utilising neutron diffraction and the contour method. In: ASME 2006 Pressure Vessels and Piping Conference (PVP2006), 23-27 Jul 2006, Vancouver, BC, Canada, American Society of Mechanical Engineers, New York.

• Published Version (PDF) This file is not available for public download

Bouchard, P. J.; Edwards, L.; Youtsos, A. G. and Dennis, R. J. (2006). Development of a residual stress simulation benchmark for a single bead-on-plate benchmark. In: ASME 2006 Pressure Vessels and Piping Conference (PVP2006), 23-27 Jul 2006, Vancouver, BC, Canada, American Society of Mechanical Engineers, New York.

Steuwer, A.; Edwards, L.; Pratihar, S.; Ganguly, S.; Peel, M.; Fitzpatrick, M. E.; Marrow, T. J.; Withers, P. J.; Sinclair, I.; Singh, K. D.; Gao, N.; Buslaps, T. and Buffière, J.-Y. (2006). In situ analysis of cracks in structural materials using synchrotron X-ray tomography and diffraction. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 246(1) pp. 217–225.

Ganguly, S.; Fitzpatrick, M.E. and Edwards, L. (2006). Use of neutron and synchrotron X-ray diffraction for evaluation of residual stresses in a 2024-T351 Aluminum Alloy Variable-Polarity Plasma-Arc weld. Metallurgical and Materials Transactions A, 37(2) pp. 411–420.

Ferrie, Emilie; Buffiere, Jean-Yves; Ludwig, Wolfgang; Gravouil, Anthony and Edwards, Lyndon (2006). Fatigue crack propagation: in situ visualization using X-ray microtomography and 3D simulation using the extended finite element method. Acta Materialia, 54(4) pp. 1111–1122.

Tan, Jeffrey Meng-Lee; Fitzpatrick, Michael E. and Edwards, Lyndon (2006). A Novel Closed-Form Calculation of the Stress Intensity Factor for a Crack in a Residual Stress Field. Materials Science Forum, 524-525 pp. 83–88.

Turski, M.; Pratihar, S.; Edwards, L.; Daymond, M.R. and Fitzpatrick, M.E. (2006). The Effect of Plastic Anisotropy on the Residual Stress within a 316L Stainless Steel Bead-on-Plate Specimen. Materials Science Forum, 524-525 pp. 679–684.

Kartal, M.; Turski, M.; Johnson, G.; Fitzpatrick, M. E.; Gungor, S.; Withers, P.J. and Edwards, L. (2006). Residual stress measurements in single and multi-pass groove weld specimens using neutron diffraction and the contour method. Materials Science Forum, 524-525 pp. 671–676.

Pratihar, S.; Stelmukh, V.; Hutchings, Michael; Fitzpatrick, M.E.; Stuhr, U. and Edwards, L. (2006). Measurement of the residual stress field in MIG-welded Al-2024 and Al-7150 aluminium alloy compact tension specimens. Materials Science and Engineering A, 437(1) pp. 46–53.

Edwards, Lyndon (2006). Influence of residual stress redistribution on fatigue crack growth and damage tolerant design. Materials Science Forum, 524-525 pp. 363–372.

Santisteban, J. R.; Fernandez, L.; Corsco, H.; Martinez, R. L.; Boccanera, L.; Edwards, L.; James, J. A. and Turski, M. (2006). Post-weld heat treatment stress relaxation in Zircaloy 4 plasma welds. Materials Science Forum, 524-525 pp. 491–496.

Edwards, L; Fitzpatrick, M. E.; Irving, P. E.; Sinclair, I; Zhang, X and Yapp, D (2005). An integrated approach to the determination and consequences of residual stress on the fatigue performance of welded aircraft structures. Journal of ASTM International

Zhang, Y.; Fitzpatrick, M. E. and Edwards, L. (2005). Analysis of the residual stress around a cold-expanded fastener hole in a Finite Plate. Strain, 41(2) pp. 59–70.

Edwards, L.; Bouchard, P.J.; Dutta, M.; Wang, D.Q.; Santisteban, J.R.; Hiller, S. and Fitzpatrick, M.E. (2005). Direct measurement of the residual stresses near a 'boat-shaped' repair in a 20 mm thick stainless steel tube butt weld. International Journal of Pressure Vessels and Piping, 82(4) pp. 288–298.

Bouchard, P. J.; George, D.; Santisteban, J. R.; Bruno, G.; Dutta, M.; Edwards, L.; Kingston, E. and Smith, D. J. (2005). Measurement of the residual stresses in a stainless steel pipe girth weld containing long and short repairs. International Journal of Pressure Vessels and Piping, 82(4) pp. 299–310.

Rist, Martin; Mulyadi, M.; Edwards, Lyndon and Brooks, J.W. (2005). Optimisation and confidence region estimation of constitutive parameters in equations for hot metal deformation. In: Banabic, D. ed. Proceedings of the 8th Esaform Conference on Material Forming, Volume 1. Bucuresti, Romania: The Publishing House of the Romanian Academy, pp. 61–64.

Polido Gomes, J.; Kowal, J. and Edwards, L. (2005). An electrostatic actuated micro-structure for high-cycle fatigue testing. In: Proceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 7-9 Jun 2005, Portland, Oregon, USA.

Steuwer, A.; Withers, P. J.; Santisteban, J. R. and Edwards, L. (2005). Using pulsed neutron transmission for crystalline phase imaging and analysis. Journal of Applied Physics, 97(7), article no. 074903.

• Download Published Version (PDF / 509kB)

Zhang, Y.; Ganguly, S.; Edwards, L. and Fitzpatrick, M.E. (2004). Cross-sectional mapping of residual stresses in a VPPA weld using the contour method. Acta Materialia, 52(17) pp. 5225–5232.

Stefanescu, D.; Steuwer, A.; Owen, R. A.; Nadri, B.; Edwards, L.; Fitzpatrick, M. E. and Withers, P. J. (2004). Elastic strains around cracked cold-expanded fastener holes measured using the synchrotron X-ray diffraction technique. Journal of Strain Analysis for Engineering Design, 39(5) pp. 459–469.

Dutta, M.; Bruno, G.; Edwards, L. and Fitzpatrick, M.E. (2004). Neutron diffraction measurement of the internal stresses following heat treatment of a plastically deformed Al/SiC particulate metal-matrix composite. Acta Materialia, 52(13) pp. 3881–3888.

James, J.A.; Santisteban, J.R.; Edwards, L. and Daymond, M.R. (2004). A virtual laboratory for neutron and synchrotron strain scanning. Physica B: Condensed Matter, 350(1-3, Suppl) E743-E746.

Dann, J.A.; Daymond, M.R.; Edwards, L.; James, J. and Santisteban, J.R. (2004). A comparison between Engin and Engin-X, a new diffractometer optimized for stress measurement. Physica B: Condensed Matter, 350(1-3) pp. 511–514.

Stefanescu, D.; Santisteban, J.R.; Edwards, L. and Fitzpatrick, M. E. (2004). Residual stress measurement and fatigue crack growth prediction after cold expansion of cracked fastener holes. Journal of Aerospace Engineering, 17(3) pp. 917–97.

Ganguly, Supriyo; Fitzpatrick, MIchael E. and Edwards, Lyndon (2004). Comparative neutron and synchrotron X-ray diffraction studies to determine residual stress on an as-welded AA2024 plate. In: Residual Stresses VII, ICRS7 . Proceedings of the 7th International Conference on Residual Stresses, ICRS-7, X’ian, China, 14-17 June 2004 (Denis, S.; Hanabusa, T.; He, B.P.; Mittemeijer, E.; Nan, J.; Noyan, I.C.; Scholtes, B.; Tanaka, K. and Xu, K.W. eds.), pp. 223–228.

Balart, M.J.; Bouzina, A.; Edwards, L. and Fitzpatrick, M.E. (2004). The onset of tensile residual stresses in grinding of hardened steels. Materials Science and Engineering: A, 367(1-2) pp. 132–142.

Nadri, B.; Edwards, L.; Fitzpatrick, M.E. and Lodini, A. (2004). Measurement of residual stresses following overloading of cold expanded holes using the X-ray diffraction technique and finite element method. Journal of Neutron Research, 12(1-3) pp. 219–224.

Stelmukh, V.; Edwards, L. and Ganguly, S. (2004). Full stress tensor determination in a textured aerospace aluminium alloy plate using synchrotron X-ray diffraction. Textures and Microstructures, 35(3-4) pp. 175–183.

Zhang, Ying; Pratihar, S.; Fitzpatrick, Michael E. and Edwards, Lyndon (2004). Residual stress mapping in welds using the contour method. In: Materials Science Forum (Denis, S.; Hanabusa, T.; He, B. P.; Mittemeijer, E.; Nan, J.; Noyan, I. C.; Scholtes, B.; Tanaka, K. and Xu, K. W. eds.), 490-491 pp. 294–299.

Steuwer, A.; Santisteban, J. R.; Withers, P. J. and Edwards, L. (2004). Pattern decomposition and quantitative-phase analysis in pulsed neutron transmission. Physica B: Condensed Matter, 350(1-3) pp. 159–161.

Özdemir, A. Tamer and Edwards, Lyndon (2004). Through-thickness residual stress distribution after the cold expansion of fastener holes and its effect on fracturing. Journal of Engineering Materials and Technology, 126(1) pp. 129–136.

Zhang, Y.; Ganguly, S.; Stelmukh, V.; Fitzpatrick, M. E. and Edwards, L. (2003). Validation of the Contour Method of Residual Stress Measurement in a MIG 2024 Weld by Neutron and Synchrotron X-ray Diffraction. Journal of Neutron Research, 11(4) pp. 181–185.

Steuwer, A.; Santisteban, J. R.; Withers, P. J.; Edwards, L. and Fitzpatrick, M. E. (2003). In situ determination of stresses from time-of-flight neutron transmission spectra. Journal of Applied Crystallography, 36(5) pp. 1159–1168.

Stefanescu, D.; Dutta, M; Wang, D. Q.; Edwards, L. and Fitzpatrick, M. E. (2003). The effect of high compressive loading on residual stresses and fatigue crack growth at cold expanded holes. Journal of Strain Analysis for Engineering Design, 38(5) pp. 419–427.

Stefanescu, D.; Edwards, L. and Fitzpatrick, M.E. (2003). Stress intensity factor correction for asymmetric through-thickness fatigue cracks at holes. International Journal of Fatigue, 25(7) pp. 569–576.

Santisteban, J.R.; Edwards, L.; Fitzpatrick, M.E.; Steuwer, A. and Withers, P.J. (2002). Engineering applications of Bragg-edge neutron transmission. Applied Physics A: Materials Science & Processing, 74(1) s1433-s1436.

Santisteban, J. R.; Steuwer, A.; Edwards, L.; Withers, P. J. and Fitzpatrick, M. E. (2002). Mapping of unstressed lattice parameters using pulsed neutron transmission diffraction. Journal of Applied Crystallography, 35(4) pp. 497–504.

Santisteban, J. R.; Edwards, L.; Fitzpatrick, M. E.; Steuwer, A.; Withers, P. J.; Daymond, M. R.; Johnson, M. W.; Rhodes, N. and Schooneveld, E. M. (2002). Strain imaging by Bragg edge neutron transmission. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 481(1-3) pp. 765–768.

Wei, L. W.; Edwards, L. and Fitzpatrick, M. E. (2002). FE analysis of stresses and stress intensity factors of interfacial cracks in a CTS specimen. Engineering Fracture Mechanics, 69(1) pp. 85–90.

Santisteban, J.R.; Edwards, L.; Steuwer, A. and Withers, P. J. (2001). Time-of-flight neutron transmission diffraction. Journal of Applied Crystallography, 34(3) pp. 289–297.

Fitzpatrick, M. E. and Edwards, L. (1998). Fatigue Crack/Residual Stress Field Interactions and Their Implications for Damage-Tolerant Design. Journal of Materials Engineering and Performance, 7(2) pp. 190–198.

Fitzpatrick, M. E.; Dutta, M. and Edwards, L. (1998). Determination by neutron diffraction of effect of plasticity on crack tip strains in a metal matrix composite. Materials Science and Technology, 14(9-10) pp. 980–986.

Ahmad, H. Y.; Fitzpatrick, M. E. and Edwards, L. (1997). Discussion on the method of caustics in conjunction with the method of birefringent coatings for the solution of fracture mechanics problems. International Journal of Fracture, 87(4) L97-L99.

Ahmad, H. Y.; Fitzpatrick, M. E.; Wallhead, I. R. and Edwards, L. (1996). Measurements of stress intensity factors of an interface crack under mixed mode loading. Journal of Adhesion, 56(1-4) pp. 187–204.