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Keywords: functionally graded materials
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Journal Articles

On the Effect of Grading Elastic Modulus in Frictional Line Contacts

Michele Ciavarella, Emanuel Willert
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2025, 147(7): 071502.
Paper No: TRIB-24-1483
https://doi.org/10.1115/1.4067815
Published Online: February 24, 2025
... solutions are not possible in closed form, in contrast to the power-law, which explains the popularity of power-law grading in the respective literature. Several other authors have been studying frictional contact problems in the presence of functionally graded materials (FGMs) ([ 10 – 16 ]), but none...
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Topics: Density, Friction, Stress, Pressure, Tension, Shear stress, Poisson ratio
Journal Articles

Elastohydrodynamic Lubrication Line Contact of a Functionally Graded Material Coated Half-Plane

Jie Su, Liao-Liang Ke
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2020, 142(10): 101601.
Paper No: TRIB-20-1028
https://doi.org/10.1115/1.4046814
Published Online: April 27, 2020
...Jie Su; Liao-Liang Ke The elastohydrodynamic lubrication line contact problem between a functionally graded material (FGM) coated half-plane and a rigid cylindrical punch is investigated. The inhomogeneous elastic properties of the FGM coating are expressed by the exponential model. The lubricant...
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Topics: Coatings, Elastohydrodynamic lubrication, Film thickness, Fluid pressure, Functionally graded materials, Iterative methods, Stress, Pressure, Stiffness, Lubricants
Journal Articles

Determination of Subsurface Hardness Gradients in Plastically Graded Materials via Surface Indentation

Michael A. Klecka, Ghatu Subhash, Nagaraj K. Arakere
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031403.
https://doi.org/10.1115/1.4003859
Published Online: July 7, 2011
...). 21 11 2010 07 03 2011 07 07 2011 07 07 2011 ductility fatigue functionally graded materials hardness indentation machine bearings materials testing plasticity steel surface hardening wear resistance plastically graded material (PGM) hardness gradient case...
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Topics: Bearings, Platinum group metals, Steel, Stress, Surface hardening, Heat treating (Metalworking), Plasticity, Wear, Fatigue damage, Machinery