“…Presented method may be directly used in factories related to hydraulic systems (Walczak and Sobczyk, 2014;Krawczyk et al, 2018) or special materials (Wawrzala and Korzekwa, 2012;Goroshko et al, 2014) and coatings (Scendo et al, 2014;Klimecka-Tatar et al, 2015;Radek et al, 2018). Such approach often requires special prediction models (Pietraszek et al, 2014;Pietraszek et al, 2017a) with an uncertainty estimated by non-parametric methods (Pietraszek and Gadek-Moszczak, 2013;Gadek-Moszczak et al, 2015;Dwornicka et al, 2017;Pietraszek et al, 2017b). Strong support for this approach is offered by a design of experiments methodology (Montgomery, 2008) which is widely used from artificial neural networks (Pietraszek, 2003) through a biotechnology (Skrzypczak-Pietraszek et al, 2018a), a phytochemistry (Skrzypczak- Pietraszek and Pietraszek, 2009;Skrzypczak-Pietraszek et al, 2018b), a mechanics (Kozien, 2009;Goroshko et al 2014) up to a industry management (Ulewicz et al, 2013;Ulewicz, 2016;Kozien and Kozien, 2017;Maszke et al, 2018).…”