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Journal Articles

Tribological Behavior of Oil-Lubricated Laser Textured Steel Surfaces in Conformal Flat and Non-Conformal Contacts

A. M. Kovalchenko, A. Erdemir, O. O. Ajayi, I. Etsion
Journal: Materials Performance and Characterization
Publisher: ASTM International
Article Type: Research-Article
Matls. Perf. Charact.. May 2017, 6(2): 1–23.
Paper No: MPC20160013
https://doi.org/10.1520/MPC20160013
Published Online: May 24, 2017
View Article titled, Tribological Behavior of Oil-Lubricated Laser Textured Steel Surfaces in Conformal Flat and Non-Conformal Contacts
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Proceedings Papers

Experimental Investigation of Transition in Lubrication Regime for Thin-Film Coated Surfaces

C. Lorenzo Martin, O. O. Ajayi, S. Torrel, G. R. Fenske, R. A. Erck
Proc. ASME. IJTC2012, ASME/STLE 2012 International Joint Tribology Conference, 251-253, October 7–10, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2012-61171
https://doi.org/10.1115/IJTC2012-61171
View Paper titled, Experimental Investigation of Transition in Lubrication Regime for Thin-Film Coated Surfaces
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Topics: Lubrication, Thin films, Coatings, Friction, Tribology, Bearings, Carbon, Composite materials, Design, Engineers
Proceedings Papers

Effect of Coating Thickness on Tribological Performance of CrN in Dry Sliding Contact

C. Lorenzo Martin, O. O. Ajayi, S. Torrel, N. Demas, A. Erdemir, R. Wei
Proc. ASME. IJTC2012, ASME/STLE 2012 International Joint Tribology Conference, 75-77, October 7–10, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2012-61172
https://doi.org/10.1115/IJTC2012-61172
View Paper titled, Effect of Coating Thickness on Tribological Performance of CrN in Dry Sliding Contact
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Topics: Coatings, Tribology, Friction, Stress, Wear, Cutting, Diluents, Mechanical behavior, Piston rings, Plasmas (Ionized gases)
Proceedings Papers

Integrity Management of Offshore Platforms: A Case Study of a Multinational Company in the Coast of West Africa

O. O. Ajayi
Proc. ASME. IMECE2010, Volume 11: New Developments in Simulation Methods and Software for Engineering Applications; Safety Engineering, Risk Analysis and Reliability Methods; Transportation Systems, 361-366, November 12–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2010-40389
https://doi.org/10.1115/IMECE2010-40389
View Paper titled, Integrity Management of Offshore Platforms: A Case Study of a Multinational Company in the Coast of West Africa
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Topics: Offshore platforms, Shorelines
Proceedings Papers

Frictional Behavior of Boundary Lubricated Contacts: Effect of Tribochemical Surface Films

C. Lorenzo-Martin, O. O. Ajayi, JungKyu Lee, Andreas A. Polycarpou
Proc. ASME. IJTC2009, ASME/STLE 2009 International Joint Tribology Conference, 79-81, October 19–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2009-15098
https://doi.org/10.1115/IJTC2009-15098
View Paper titled, Frictional Behavior of Boundary Lubricated Contacts: Effect of Tribochemical Surface Films
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Topics: Thin films, Friction, Lubricants, Fluid films, Shear (Mechanics), Contact mechanics, Die cutting, Fluids, Gears, Lubrication
Proceedings Papers

The Effect of Lubricant Chemistry on Wear and Scuffing of Coated Surfaces

K. Cheenkachorn, J. M. Perez, O. O. Ajayi, G. R. Fenske
Proc. ASME. ICES2003, Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components, 409-413, May 11–14, 2003
Publisher: American Society of Mechanical Engineers
Paper No: ICES2003-0659
https://doi.org/10.1115/ICES2003-0659
View Paper titled, The Effect of Lubricant Chemistry on Wear and Scuffing of Coated Surfaces
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Topics: Chemistry, Coatings, Friction, Lubricants, Wear
Proceedings Papers

Laser Glazing Process Development and Optimization for Railroad Applications

S. H. Aldajah, O. O. Ajayi, G. R. Fenske
Proc. ASME. IJTC2006, Part B: Magnetic Storage Tribology; Manufacturing/Metalworking Tribology; Nanotribology; Engineered Surfaces; Biotribology; Emerging Technologies; Special Symposia on Contact Mechanics; Special Symposium on Nanotribology, 1081-1107, October 23–25, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2006-12095
https://doi.org/10.1115/IJTC2006-12095
View Paper titled, Laser Glazing Process Development and Optimization for Railroad Applications
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Topics: Lasers, Optimization, Railroads, Rails, Friction, Wheels, Fuels, Gages, Lubricants, Trains
Proceedings Papers

Full Scale Friction and Durability Testing of Laser Glazed Rail

S. H. Aldajah, O. O. Ajayi, G. R. Fenske
Proc. ASME. IJTC2006, Part B: Magnetic Storage Tribology; Manufacturing/Metalworking Tribology; Nanotribology; Engineered Surfaces; Biotribology; Emerging Technologies; Special Symposia on Contact Mechanics; Special Symposium on Nanotribology, 1109-1144, October 23–25, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2006-12096
https://doi.org/10.1115/IJTC2006-12096
View Paper titled, Full Scale Friction and Durability Testing of Laser Glazed Rail
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Topics: Durability, Friction, Lasers, Rails, Testing, Adhesion, Wheels, Cracking (Materials), Energy dissipation, Force measurement
Journal Articles

Effect of Laser Surface Modifications Tribological Performance of 1080 Carbon Steel

S. H. Aldajah, O. O. Ajayi, G. R. Fenske, Z. Xu
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2005, 127(3): 596–604.
https://doi.org/10.1115/1.1924461
Published Online: January 18, 2005
View Article titled, Effect of Laser Surface Modifications Tribological Performance of 1080 Carbon Steel
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Topics: Carbon steel, Friction, Lasers, Wear, Tribology, Steel, Shot peening, Laser hardening, Surface finishing
Journal Articles

Natural Convection in a Hemispherical Bowl With a Free Surface

O. O. Ajayi
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. November 1986, 108(4): 970–973.
https://doi.org/10.1115/1.3247043
Published Online: November 1, 1986
View Article titled, Natural Convection in a Hemispherical Bowl With a Free Surface
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Topics: Natural convection
Journal Articles

Time-Dependent Stokes Flow Induced by Instantaneous Sources

O. O. Ajayi, A. Falade
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. September 1985, 52(3): 718–724.
https://doi.org/10.1115/1.3169128
Published Online: September 1, 1985
View Article titled, Time-Dependent Stokes Flow Induced by Instantaneous Sources
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Topics: Creeping flow, Flow (Dynamics), Fluids, Prandtl number, Approximation, Buoyancy, Cooling, Explosions, Fluid dynamics, Heat