Investigation of Testing Parameters Influencing the Permanent Linear Change Testing Results of Dense Refractory Bricks

D. Castaño-Laviana, M. Miranda-Martínez, J. R. Campello-García

ITMA Materials Technology, 33428 Llanera, Asturias/Spain

Revision

Volume 7, Issue 3, Pages 113 - 118

Abstract

Current standards for the determination of physical and chemical properties of refractory materials disclose little or no data on precision values. But, such data are basic information for communication between refractory producer and final user. Sometimes differences between the values of properties reported by specialized testing laboratories and those provided by the refractory suppliers lead to discussions, or even claims. This paper reports some results on permanent linear change (PLC) testing of refractory materials, carried out according to EN 993-10. These data were obtained within the frame of the European funded research project known as ReStaR which included a multinational consortium of 13 partners including six independent laboratories. A factorial design of the experiments, followed by an ANOVA analysis, was carried out in order to identify the influencing factors. In the case of Permanent Linear Change (PLC) up to five influencing factors were investigated.

Keywords

permanent linear change, testing standard, interlaboratory tests

References

[1] Montgomery, D.C.; Runger, G.C.: Probabilidad y estadística aplicadas a la ingeniería. 1st ed.,Mexico 2005 [2] Montgomery, D.C.: Design and analysis of experiments. 6th ed., New York 2004 [3] Plackett, R.L.; Burman, J.P.: The design of optimum multifactorial experiments. Biometrika 34 (1946) 255–272

Copyright

Göller Verlag GmbH