Int. J. Metrol. Qual. Eng.
Volume 10, 2019
|Number of page(s)||8|
|Published online||26 April 2019|
Coefficients of static and dynamic friction of ceramic floor tiles: proposal of new method of surface roughness determination
Universidade do Extremo Sul Catarinense − UNESC, Av. Universitária, 1105 – Bairro Universitário, 88806-000 Criciúma, SC, Brazil
2 Eliane Revestimentos Cerâmicos, R. Maximiliano Gaidzinski, 245 - Centro, 88845-000 Cocal do Sul, SC, Brazil
* Corresponding author: email@example.com
Accepted: 16 March 2019
Among the most important properties of ceramic floor tiles, the static and dynamic coefficients of friction assume an important role. The literature and current standards regarding ceramic floor tiles suggest different methods for determining the values of the coefficients of static and dynamic friction; however, all methods present limitations of implementation, and it is common for them to produce different values and hence specifications for different applications. In the present study, tests were conducted on the products with different topcoats and roughness to determine the coefficient of friction using the standards NBR 13818, ANSI A137.1, DIN 51130, and UNE-ENV 12633 and our proposed methodology. These values were compared with the roughness measurements obtained by mechanical contact profilometry. Additionally, empirical human evaluation of the roughness was performed. The trials indicated very different results on different experimental equipment for the same type of surface. The roughness test yielded parameters that correlate well with the empirical evaluation. The study shows the need for searching the uniformity of standards because each methodology produces different (even uncorrelated) results.
Key words: Coefficient of static and dynamic friction / slip resistance / roughness of ceramic floor tiles / human empirical evaluation of roughness
© A. Demarch et al., published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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