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Method and apparatus for determination of mechanical properties of functionally-graded materials

United States Patent

5,999,887
December 7, 1999
View the Complete Patent at the US Patent & Trademark Office
Techniques for the determination of mechanical properties of homogenous or functionally-graded materials from indentation testing are presented. The technique is applicable to indentation on the nano-scale through the macro-scale including the geological scale. The technique involves creating a predictive load/depth relationship for a sample, providing an experimental load/depth relationship, comparing the experimental data to the predictive data, and determining a physical characteristic from the comparison.
Giannakopoulos; Antonios E. (Somerville, MA), Suresh; Subra (Wellesley, MA)
Massachusetts Institute of Technology (Cambridge, MA)
08/ 805,624
February 26, 1997
GOVERNMENT LICENSE RIGHTS This invention was made with support of the government of the United States of America under grant number DE-FG02-93ER45506 awarded by the U.S. Department of Energy. The U.S. government has certain rights in the invention.