Manufacturing Technology 2016, 16(4):771-777 | DOI: 10.21062/ujep/x.2016/a/1213-2489/MT/16/4/771

The Indentation Size Effect (ISE) and the Speed of the Indenter Penetration into Test Piece

Jozef Petrík, Pavol Palfy, Peter Blaško, Lenka Girmanová, Milan Havlík
Faculty of Metallurgy, Technical University of Košice. Letná 9, 042 00 Košice Slovakia

The aim of the submitted paper is to study the influence of the speed of the penetration of the indenter into the test piece ranging from 0.302 μm s-1 to 1.089 μm s-1 and applied load ranging from 10 g to 100 g on measured values of micro-hardness. Whereas certified reference material with defined specified hardness and its uncertainty was used as a test piece, the measurement involved indirect calibration of the tester. The influence of observed factors on measured value of the micro-hardness was evaluated by Meyer's index n, PSR method and by Analysis of Variance (ANOVA). The influence of the load on the measured value of micro-hardness is statistically significant and the relationship between applied load and micro-hardness manifests "reverse" ISE. The velocity has statistically significant effect on the micro-hardness. Meyer's index on average decreases with increasing of the speed.

Keywords: Micro-hardness, ISE, Speed of the indenter in the test piece, Load

Published: August 1, 2016  Show citation

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Petrík J, Palfy P, Blaško P, Girmanová L, Havlík M. The Indentation Size Effect (ISE) and the Speed of the Indenter Penetration into Test Piece. Manufacturing Technology. 2016;16(4):771-777. doi: 10.21062/ujep/x.2016/a/1213-2489/MT/16/4/771.
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