Determination of the individual phase properties from the measured grid indentation data

0467173 - ÚFP 2017 RIV US eng J - Článek v odborném periodiku
Haušild, P. - Materna, A. - Kocmanová, L. - Matějíček, Jiří
Determination of the individual phase properties from the measured grid indentation data.
Journal of Materials Research. Roč. 31, č. 22 (2016), s. 3538-3548. ISSN 0884-2914. E-ISSN 2044-5326
Grant CEP: GA ČR GB14-36566G
Institucionální podpora: RVO:61389021
Klíčová slova: Composite * Tungsten * Steel * indentation
Kód oboru RIV: JI - Kompozitní materiály
Impakt faktor: 1.673, rok: 2016
http://dx.doi.org/10.1557/jmr.2016.375

Statistical distribution of grid indentation data measured in multiphase materials can be significantly affected by the presence of an interface between adjacent materials. The influence of an interface on the distribution of measured indentation moduli was therefore characterized in model metal–metal, ceramic–ceramic, and metal-ceramic composites. The change of properties near the interface was simulated by finite element method and experimentally verified by indentation in proximity of the boundary between two phases with distinctly different mechanical properties varying the depth of penetration and the distance from the interface. Subsequently, the conditional probability of measuring near the interface was quantified by beta distribution function with parameters dependent on the size of the volume/area affected by the presence of the interface. Using this approach, the intrinsic properties of the individual materials were successfully extracted from the experimental grid indentation data.
Trvalý link: http://hdl.handle.net/11104/0265283