Publications List (R. Ahmed)

Important Note:

The copyright of these papers in all cases belong to the publishers. These online versions are provided by the author for consultation purposes only. They may not be reproduced, printed, copied or distributed in any form without the permission of the appropriate copyright holder.

 

Book Contribution(s)

            R. Ahmed, ASM Handbook, Vol. 11, Section 6E, Failure Analysis and Prevention, Shipley and Becker Edition, ISBN 0-87170-704-7, Nov. 2002.

 

Refereed Publications

 

2009

  1. H. Yu, R. Ahmed, H. de Villiers Lovelock, S. Davies, “Influence of Manufacturing Process and Alloying Element Content on the Tribomechanical Properties of Cobalt-Based Alloys”, ASME Journal of Tribology, 131(1), 2009.

 

  1. N. H. Faisal, J. A. Steel, R. Ahmed, R. L. Reuben, “The Use of Acoustic Emission (AE) to Characterise Vickers Indentation Behaviour of HVOF Thermally Sprayed WC-12%Co Coatings”, Journal of Thermal Spray Technology, 2009.

 

 

  1. R. Ahmed, N. Faisal, R. L. Reuben, A. Paradowska, M. Fitzpatrick, J. Kitamura and S. Osawa, “Neutron Diffraction Residual Strain measurements in Thermally Sprayed Alumina Coatings Deposited Via Air Plasma and High Velocity Oxy-Fuel Techniques”, International Conference on Neutron Scattering, Tennessee, USA, May 2009.

 

2008

  1. R. Ahmed, H. Yu, L. Edwards and J. Santisteban, “Neutron Diffraction Residual Strain Measurements in Post-treated Thermal Spray Cermet Coatings”, Material Science and Engineering-A, 498, 191-202, 2008.

 

  1. M. Salehabadi, M. Jin, SPE, J. Yang, H. Haghighi, R. Ahmed and B. Tohidi, “Finite Element Modelling of Casing in Gas Hydrate Bearing Sediments”, SPE Conference 2008.

 

 

  1. J.P. Parry, F. C. Dear, R. Ahmed, J. D. Shephard, and D. P. Hand, “Fiber Laser Processing of Thick Yttria Stabilized Zirconia”, 27th International Congress on Applications of Lasers & Electro-Optics, CA, USA, October 2008.

 

2007

  1. H. Yu, R. Ahmed, H. de Villiers Lovelock, “A Comparison of the Tribo-Mechanical Properties of Wear-Resistant Cobalt Based Alloys Produced by Different Manufacturing Processes”, ASME Journal of Tribology, 129(3), 586-594, 2007.

 

  1. R. Ahmed, H. Yu, S. Stewart, L. Edwards and J. Santisteban, “Residual Strain Measurement in Thermal Spray Cermet Coatings Via Neutron Diffraction”, ASME Journal of Tribology, 129(2), 411-418, 2007.

 

  1. H. Yu, R. Ahmed, H. de Villiers Lovelock, S. Davies, “Tribo-Mechanical Evaluations of Cobalt-Based (Stellite 4) Alloys Manufactured Via HIPing and Casting”, World Congress on Engineering, ISBN 978-988-98671-2-6, 1385-1390, 2007.

 

  1. R. Ahmed, H. Yu, S. Stewart, L. Edwards and J. Santisteban, “Influence of Vacuum Heat Treatment on the Residual Stress of Thermal Spray Cermet Coatings”, World Congress on Engineering, ISBN 978-988-98671-2-6, 1181-1186, 2007.

 

2006

  1. N. H. Faisal, J. A. Steel, R. Ahmed, R. L. Reuben, G. Heaton, B. Allcock, “Application of Acoustic Emission for Monitoring the HVOF Thermal Spraying Process”, Advanced Materials Research, 13-14, 291-297, 2006.

 

2005

  1. S. Osawa, T. Itsukaichi and R. Ahmed, “Influence of Substrate Properties on the Impact Resistance of WC Cermet Coatings”, Journal of Thermal Spray Technology, 14(4), 495-501, 2005.

 

  1. V. Stoica, R. Ahmed, and T. Itsukaichi, “Influence of Heat Treatment on the Sliding Wear of Thermal Spray Cermet Coatings”, Surface and Coatings Technology, 199(1), 7-21, 2005.

 

  1. S. Stewart, R. Ahmed, and T. Itsukaichi “Rolling Contact Fatigue of Post-treated WC-NiCrBSi Thermal Spray Coatings”, Surface and Coatings Technology, 190 (Issue 2-3), 171-189, 2005.

 

2004

  1. V. Stoica, R. Ahmed, T. Itsukaichi and S. Tobe, “Sliding Wear Evaluation of HIPed Thermal Spray Cermet Coatings, Wear, 257 (Issue 11), 1103-1124, 2004.

 

  1. V. Stoica, R. Ahmed, M. Golshan and S. Tobe, “Sliding Wear Evaluation of Hot Isostatically Pressed (HIPed) Thermal Spray Cermet Coatings”, Journal of Thermal Spray Technology, 13(1), 93-107, 2004.

 

  1. S. Osawa, T. Itsukaichi, R. Ahmed, “Influence of Substrate Properties on the Impact Resistance of WC Cermet Coatings”, International Thermal spray Conference (ITSC2004), Osaka, Japan, ISBN 3-87155-792-7, 2004. Japanese Organising Committee Award (Also invited later for publication in Jr. of Thermal Spray Technology).

 

  1. R. Ahmed, S. Stewart, V. Stoica, T. Itsukaichi, “Influence Of Post-Treatment on the Tribomechanical Properties of Cermet Coatings”, International Thermal Spray Conference (ITSC2004), Osaka, Japan, ISBN 3-87155-792-7, 2004.

 

  1. S. Stewart, R. Ahmed, and T. Itsukaichi “Contact Fatigue Failure Evaluation of Post-treated WC-NiCrBSi Functionally Graded Thermal Spray Coatings”, Wear, 257 (Issue 9-10), 962-983, 2004.

 

2003

1.      S. Stewart and R. Ahmed, “Contact Fatigue Failure Modes in Hot Isostatically Pressed WC-12%Co Coatings”, Surface and Coatings Technology, 172, 204-216, 2003.

 

2.      J. Kang, M. Hadfield and R. Ahmed, “The Effects Of Material Combination and Surface Roughness in Lubricated Silicon Nitride/Steel Rolling Contact Fatigue”, Materials and Design, 24, 1-13, 2003.

 

  1. R. Ahmed and M. Hadfield, “Wear-Mapping to Optimise Overlay Coating Design in Rolling Sliding Contacts”, Tribology in Environmental Design, Second International Conference, Bournemouth, UK, ISBN 1 860584152, 59-70, 2003.

 

  1. S. Tobe, Y. Ando, R. Ahmed and V. Stoica, “Enhancement of Wear and Mechanical Properties of Thermally Sprayed WC-CO Coatings by HIPing Post-Treatment”, Tribology in Environmental Design, Second International Conference, Bournemouth, UK, ISBN 1 860584152, 119-127, 2003.

 

  1. V. Stoica, R. Ahmed, T. Itsukaichi and S. Tobe, “Sliding Wear Evaluation of Hot Isostatically Pressed (Hiped) Thermal Spray Cermet Coatings”, Advancing the Science and Applying the Technology, International Thermal Spray Conference, Florida, USA, 459-466, 2003.

 

  1. T. Itsukaichi, S. Osawa and R. Ahmed, “Influence of Powder Size and Strength on HVOF Spraying - Mapping the Onset of Spitting”, Advancing the Science and Applying the Technology, International Thermal Spray Conference, Florida, USA, 819-824, 2003.

 

  1. S. Stewart, R. Ahmed, T. Itsukaichi and S. Tobe, “Rolling Contact Fatigue of Hot Isostatic Pressed WC-NiCrBSi Thermal Spray Coatings”, Advancing the Science and Applying the Technology, International Thermal Spray Conference, Florida, USA, 1351-1359, 2003.

 

2002

1.      R. Ahmed, “Contact Fatigue Failure Modes of HVOF Coatings”, Wear, 253, 473-487, 2002.

 

2.      R. Ahmed and M. Hadfield, “Mechanisms of Fatigue Failure in Thermal Spray Coatings”, Journal of Thermal Spray Technology, 11(3), 333-349, 2002.

 

  1. S. Stewart and R. Ahmed, “Rolling Contact Fatigue of Surface Coatings-a Review”, Wear, 253, 1132-1144, 2002.

 

  1. V. Stoica, R. Ahmed and S. Tobe, “Wear of Hot Isostatically Pressed (HIPed) Thermal Spray Coatings”, International thermal spray conference, Germany, Thermal Spray: Surface Engineering via Applied Research, ISBN: 0-87170-680-6, 930-937, 2002.

 

2001

1.      M. P. F. Sutcliffe, H. Le and R. Ahmed, “Modelling of Pit Evolution in Rolling or Strip Drawing”, ASME, Journal of Tribology, 123, 791-798, October 2001.

 

2.      R. Ahmed and M. P. F. Sutcliffe, “An Experimental Investigation of Surface Pit Evolution During Cold Rolling or Drawing Of Stainless Steel Strip”, ASME, Journal of Tribology, 123, 1-7, January 2001.

 

3.      R. Ahmed, “Potentials of Post-Processing Thermal Spray Coatings for Tribological Applications”, Publication of TSSEA, January 2001 Issue. Invited Publication.

 

  1. R. Ahmed, M. Hadfield and S. Tobe, “Influence of Coating Thickness and Contact Stress On The Fatigue Failure Of HVOF Coatings”, International thermal spray conference, Singapore, New Surfaces for a New Millennium, ISBN 0871707373, 1009-1016, 2001. Best Paper Award

 

2000

  1. R. Ahmed and M. P. F. Sutcliffe, “Identification of Surface Features on Cold Rolled Stainless Steel Strip”, Wear, 244, 60-70, 2000.

 

  1. R. Ahmed, M. Hadfield and S. Tobe, “HVOF Coatings to Combat Fatigue – The Quest Continues”, Int. Conf. on Tribology in Environmental Design, Bournemouth, UK, ISBN 1-86058-266-4, 121-128, 2000. Keynote Paper

 

  1. R. Ahmed and M. P. F. Sutcliffe, “Analysis of Micro-Plasto-Hydrodynamic Lubrication (MPHL) Using Strip Drawing Rig”, CAPE conference, Edinburgh, UK, ISBN 1-86058263X, 329-342, 2000.

 

  1. R. Ahmed, M. Hadfield and S. Tobe, “Variation in Residual Stress Fields During Fatigue Failure of Thermal Spray Coatings”, International Thermal Spray Conference, Canada, ISBN 0-87170-680-6, 399-406, 2000.

 

1999

  1. R. Ahmed and M. Hadfield, “Failure Modes of Plasma Sprayed WC-Co Coated Rolling Elements”, Wear, 230, 39-55, 1999.

 

  1. R. Ahmed and M. P. F. Sutcliffe, “Evolution of Surface Roughness Within the Roll Bite During Cold Rolling of Stainless Steel”, Modelling of metal rolling processes-III, London, ISBN 1-86125-105-X, 390-399, 1999.

 

1998

  1. R. Ahmed and M. Hadfield, “Rolling Contact Fatigue Performance of Plasma Sprayed Coatings”, Wear, 220(1), 80-91, 1998.

 

  1. R. Ahmed and M. Hadfield, “Fatigue Behaviour of HVOF Coated M-50 Steel Rolling Elements”, Surface Engineering, 14(6), 473-480, 1998.

 

1997

  1. R. Ahmed and M. Hadfield, “Rolling Contact Fatigue Performance of Detonation Gun Coated Elements”, Tribology International, 30(2), 129-137, 1997.

 

  1. R. Ahmed and M. Hadfield, “Experimental Measurement of the Residual Stress Field Within Thermally Sprayed Rolling Elements”, Wear, 209, 84-95, 1997.

 

  1. R. Ahmed and M. Hadfield, “Wear of HVOF Coated Cones in Rolling Contact”, Wear, 203-204, 98-106, 1997.

 

4.      R. Ahmed & M. Hadfield, “Rolling Contact Fatigue Performance of HVOF Coated Elements”, Advances in Surface Engineering, 1,Published by The Royal Society of Chemistry, ISBN 0-85404-747-6, 229-237, 1997.

 

5.      M. Hadfield, R. Ahmed and S. Tobe, “Residual Stress Measurements of Silicon Nitride and Coated Tungsten Carbide Rolling Contact Elements”, Surface Treatment, 319-328, 1997.

 

1996

  1. R. Ahmed and M. Hadfield, “Rolling Contact Fatigue Behaviour of Thermally Sprayed Rolling Elements” Surface & Coatings Technology, 82, 176-186, 1996.

 

2.      R. Ahmed, M. Hadfield & S. Tobe, “Residual Stress Analysis in Thermal Spray Coated Rolling Elements”, National thermal spray conference, USA, ISBN 0-87170-583-4, 875-883, 1996.

 

1995

1.      M. Hadfield, R. Ahmed & S. Tobe, “Rolling Contact Fatigue of Thermal Spray Coated Cones”, International thermal spray conference, Kobe, Japan, ISSN 1241-3074, 1097-1102, 1995.