On the generality of the relationship between contact stiffness, contact area, and elastic modulus during indentation

Journal Article · Sat Feb 29 23:00:00 EST 1992 · Journal of Materials Research; (United States)

DOI:https://doi.org/10.1557/JMR.1992.0613· OSTI ID:7034784

Pharr, G M ^[1]; Oliver, W C ^[2]; Brotzen, F R ^[1]

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1. Department of Materials Science, Rice University, P. O. Box 1982, Houston, Texas 77251 (United States)
2. Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

Results of Sneddon's analysis for the elastic contact between a rigid, axisymmetric punch and an elastic half space are used to show that a simple relationship exists between the contact stiffness, the contact area, and the elastic modulus that is not dependent on the geometry of the punch. The generality of the relationship has important implications for the measurement of mechanical properties using load and depth sensing indentation techniques and in the measurement of small contact areas such as those encountered in atomic force microscopy.

• DOE Contract Number: AC05-84OR21400; AC05-76OR00033
• OSTI ID: 7034784
• Journal Information: Journal of Materials Research; (United States), Journal Name: Journal of Materials Research; (United States) Vol. 7:3; ISSN JMREE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELASTICITY
FILMS
MEASURING METHODS
MECHANICAL PROPERTIES
SIMULATION
TENSILE PROPERTIES
THIN FILMS