NAVRÁTIL, Vladislav and Jiřina NOVOTNÁ. Mathematical Models of Indentation Size Effect. In Moderní matematické metody v inženýrství. 2010.
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Basic information
Original name Mathematical Models of Indentation Size Effect
Name in Czech Matematické modely "Indentation Size Effect"
Authors NAVRÁTIL, Vladislav and Jiřina NOVOTNÁ.
Edition Moderní matematické metody v inženýrství, 2010.
Other information
Original language English
Type of outcome Presentations at conferences
Field of Study 10302 Condensed matter physics
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Education
Keywords (in Czech) mikrotvrdost; kadmium; zinek; hliník; měď; artefakt; geometricky nutné dislokace
Keywords in English microhardness; cadmium; zinc; aluminum; copper; artefact; geometrically necessary dislocations
Tags International impact, Reviewed
Changed by Changed by: prof. RNDr. Vladislav Navrátil, CSc., učo 129. Changed: 23/5/2013 15:24.
Abstract
The purpose of the contribution is to study the size dependence of the microhardness. This well known phenomenon is called the Indentation Size Effect (ISE) and was investigated for four sets of specimen: pure copper, aluminum, cadmium and zinc. Variation of the microhardness with depth of indent was compared with various existing models. For the materials investigated the ISE is not artefact and can be explained by the hypothesis of presence of geometrically necessary dislocations, i.e. dislocations produced to accomodate the gradient in strain surrounding indent.
Abstract (in Czech)
Cílem práce je studium tzv. Indentation Size Effect, tj. závislosti naměřené mikrotvrdosti na velikosti zatížení. Tento jev byl studován na čisté mědi, zinku, hliníku a kadmiu. Výsledkem studia je tvrzení, že ISE není artefaktem a že je prevděpodobně způsoben přítomností tzv. gaometricky nutných dislokací, vznikajících kolem vtisku.
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