24 August 2009 The analysis of affecting nanoindentation test result factors
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Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 737530 (2009) https://doi.org/10.1117/12.839237
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China
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.
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M. H. Liu, H. W. Ji, H. Miao, H. Q. Li, "The analysis of affecting nanoindentation test result factors", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737530 (24 August 2009); doi: 10.1117/12.839237; https://doi.org/10.1117/12.839237
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