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Proceedings Paper

The analysis of affecting nanoindentation test result factors
Author(s): M. H. Liu; H. W. Ji; H. Miao; H. Q. Li
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Paper Abstract

The Value for material elastic modulus obtained from the indentation loading and unloading history of 45 carbon steel was compared to the value for 45 carbon steel elastic modulus tested by conventional tensile tester. The result indicates that the former was larger than the latter, increasing about 11.5%. The indenting process has been discussed along with a cone of semi-apical angle, α, with a spherical cap of radius, R. As a result, it is clear that the determination of the indentation contact depth hc tested in the measure process is very important factor to calculate elastic modulus of the materials. It is shown that the effects of the pile-up or sink-in factors on the test data are obvious for the micro/submicro scale, especially for the nano scale. Therefore the reliability of data using indentation test should be noted.

Paper Details

Date Published: 24 August 2009
PDF: 6 pages
Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737530 (24 August 2009); doi: 10.1117/12.839237
Show Author Affiliations
M. H. Liu, Tianjin Univ. of Commerce (China)
H. W. Ji, Tianjin Univ. of Commerce (China)
H. Miao, Tianjin Univ. of Commerce (China)
H. Q. Li, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7375:
ICEM 2008: International Conference on Experimental Mechanics 2008
Xiaoyuan He; Huimin Xie; YiLan Kang, Editor(s)

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