Shape Effects of Indenter on the Depth-Sensing Indentation

Abstract:

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It is revealed that the conventional reduced modulus used in depth-sensing indentation tests is invalid for a flat-ended cylindrical indenter due to the fact that the contact area during the loading is a constant irrelative to load. The load-displacement curve of flat punch is related to the length of the punch and the ratio of the elastic modulus of the indenter to the specimen (the modulus ratio Ei/E). Furthermore, theoretic analysis and finite element simulation demonstrated that, for conical indenter, the measured hardness from depth-sensing indentation tests would increase with increasing modulus ratio because the load increased with the ratio for the same displacement.

Info:

Periodical:

Edited by:

Yiwang Bao, Li Tian and Jianghong Gong

Pages:

105-108

DOI:

10.4028/www.scientific.net/AMR.177.105

Citation:

X. Y. Shi et al., "Shape Effects of Indenter on the Depth-Sensing Indentation", Advanced Materials Research, Vol. 177, pp. 105-108, 2011

Online since:

December 2010

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$35.00

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