DETERMINING MECHANICAL PROPERTIES OF O1 TOOL STEEL FROM REVERSE COMPUTATION OF INDENTATION MEASUREMENT

L. Ma, S. Low, J. Song, J. Zhou

Abstract

Besides obtaining the hardness of materials, the indentation test has also been developed as a popular method for investigating mechanical properties. There exist some empirical or semi-analytical methods for determining the hardness, Young’s modulus and work hardening exponent from indentation experiments. In this paper, a reverse computation method is introduced to determine the elastic modulus and stress-strain curve of O1 tool steel from the Rockwell C hardness (HRC) indentation test combined with finite element analysis (FEA) simulation. The forcedepth data from the HRC spheroconical indentation measurement is used to start an iterative FEA simulation procedure to extract the elastic-plastic stress-strain relationship which is consistent with the experimentally measured data. The reverse computation results agree well with HRC test results.

Keywords

finite element analysis (FEA), indentation, material properties

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PWC-2003-TC5-009.pdf

DOI

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IMEKO TC

TC5 - Hardness Measurement

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