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Petrík J., Mikloš V., Tompoš T, Jakub M. |
THE EVALUATION OF THE HARDNESS TESTER CALIBTATION QUALITY |
Abstract
The aim of the article is evaluation the quality of Vickers hardness tester calibration (HV5, 10, 30, 50 and 100) by uncertainty and capability utilization. Methods according standards ISO 6507-2, DIN EN V 13 005 and tolerances analyze method, were used for calculation. According to maximal permissible error (or Urel) the tester is convenient to standard only for test force 50 kg and partly convenient for 100 kg. Using the threshold tolerance leads to overestimation of uncertainty, above all for higher test forces.
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Keywords: Vickers hardness test|calibration|uncertainty| |
No 3 (2008), p. 405-413 |
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Ivanišin P., Hirjak M. |
BLAST FURNACE SLAG, PROCESSING AND UTILIZATION |
Keywords: blast furnace slag|processing of slag|granulated blast furnace slag|blast furnace gravel and blast furnace pumice|utilization of blast furnace slag| |
No 3 (2008), p. 414-418 |
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