VERIFICATION RESULTS OF LEEB HARDNESS INDICATING DEVICES FROM DIFFERENT MANUFACTURERS USING THE LEEB HARDNESS REFERENCE VOLTAGE SIGNAL

Nae Hyung Tak, Gun Woong Bahng, Tag Gyu Kim

Abstract

The indicating device of a Leeb hardness tester is an important device that determines the performance of tester. As such, the indicating device needs verification just like the depth-measuring system of a Rockwell hardness tester. This paper presents the verification results of indicating devices from different manufacturers. For the verification, a calibrator to output the reference voltage signal was designed and used for the test. The results showed that the maximum deviation was 24 HLD.

Keywords

hardness, Leeb Hardness, verification of indicating device

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IMEKO-WC-2015-TC5-170.pdf

DOI

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IMEKO TC

TC5 - Hardness Measurement

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