The principal component analysis of tribological tests of surface layers modified with IF-WS2 nanoparticles / Jacek Pietraszek, Joanna Korzekwa, Andrii Goroshko // W: Parametric and non-parametric methods ... więcej

The principal component analysis of tribological tests of surface layers modified with IF-WS2 nanoparticles / Jacek Pietraszek, Joanna Korzekwa, Andrii Goroshko // W: Parametric and non-parametric methods of data analysis at multiscale modeling / ed. by Agnieszka Szczotok, Jacek Pietraszek, Norbert Radek. – Pfäffikon : Trans Tech Publications Ltd, 2015. – (Solid State Phenomena, ISSN 1012-0394 ; 235). – S. 9-15 : rys., tab., wykr. – Bibliogr. 15 poz., Abstr. – Seria gł.: Diffusion and Defect Data, ISSN 0377-6883. – doi: 10.4028/www.scientific.net/SSP.235.9. – ISBN 978-3-03835-503-8

The investigation described in this paper resulted in some complicated statistical analysis. The first level was an experimental design with technological parameters as factorials input and geometrical ... więcej

The investigation described in this paper resulted in some complicated statistical analysis. The first level was an experimental design with technological parameters as factorials input and geometrical surface layer properties as quantitative outputs. The second level was an analysis generally leading to an optimization inverse problem: what parameters result in desired surface layer properties. The principal component analysis was made to identify possibility of a dimensionality reduction and simplify the optimization. Obtained results showed that the experimental dataset is practically two-dimensional but PCA projection involves all factors into the skewed hyper-plane. This paper contains a description of the problem, obtained results, analysis and conclusions.