A novel two-parameter area function for determination of near surface properties of Young’s modulus of elasticity and hardness has shown promise for compensating for the imperfection of the tip-end in an instrumented indentation measurement. This paper provides a comprehensive study involving a Berkovitch tip. The tip is utilized in an MTS nanoindentation measurement machine and used to establish load indentation information for fused silica samples. The geometry of the tip is then characterized independently using a highly accurate Atomic Force Microscope. Using the indentation data along with the two-parameter area function methodology, the tip-end radius of curvature is found to provide the most consistent value of modulus of elasticity. Independently, the data from the SEM measurement of the same tip is used to obtain the least squares estimation of the tip curvature. The two approaches yield favorable agreement in the estimation of tip-end radius of curvature. Therefore, the validity of the two-parameter area function method is proved. The method is shown to provide a robust, reliable and accurate measurement of modulus of elasticity and hardness in the nanoscale proximity of a surface.
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STLE/ASME 2006 International Joint Tribology Conference
October 23–25, 2006
San Antonio, Texas, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4259-2
PROCEEDINGS PAPER
Assessment and Verification of a Novel Method for Near Surface Measurement of Mechanical Properties
S. Ozcan,
S. Ozcan
Southern Illinois University at Carbondale, Carbondale, IL
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K. Farhang,
K. Farhang
Southern Illinois University at Carbondale, Carbondale, IL
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P. Filip
P. Filip
Southern Illinois University at Carbondale, Carbondale, IL
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S. Ozcan
Southern Illinois University at Carbondale, Carbondale, IL
K. Farhang
Southern Illinois University at Carbondale, Carbondale, IL
P. Filip
Southern Illinois University at Carbondale, Carbondale, IL
Paper No:
IJTC2006-12242, pp. 49-57; 9 pages
Published Online:
October 2, 2008
Citation
Ozcan, S, Farhang, K, & Filip, P. "Assessment and Verification of a Novel Method for Near Surface Measurement of Mechanical Properties." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics. San Antonio, Texas, USA. October 23–25, 2006. pp. 49-57. ASME. https://doi.org/10.1115/IJTC2006-12242
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