Ludvík Kunz
Academy of Sciences of the Czech Republic
86 Papers
526 Citations
Ludvík Kunz is an academic researcher from Academy of Sciences of the Czech Republic. The author has contributed to research in topics: Fatigue limit & Crack closure. The author has an hindex of 22, co-authored 82 publications.
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Papers
Fatigue strength, microstructural stability and strain localization in ultrafine-grained copper
TL;DR: In this article, the authors used the electron back scattering diffraction technique to reveal changes of bulk microstructure due to cyclic loading and minor changes of dislocation microstructures were detected by transmission electron microscopy, which was attributed to high stability of the grain structure and lower purity of the examined ultrafine-grained copper.
169
Role of persistent slip bands in fatigue
Petr Lukáš,Ludvík Kunz +1 more
TL;DR: In this paper, the authors delimit the conditions for the occurrence of persistent slip bands and discuss their role in the fatigue process in all its stages, that is in cyclic hardening resulting in a saturated stress-strain response, in initiation of fatigue microcracks and in propagation of fatigue cracks.
109
Microstructure and directional fatigue behavior of Inconel 718 produced by selective laser melting
TL;DR: In this article, the performance of the selective laser melting (SLM) process on Inconel 718 (IN 718) parts was investigated and it was shown that the direction parallel to the build direction is associated with the lowest fatigue strength.
94
High-cycle fatigue of Ni-base superalloy Inconel 713LC
TL;DR: In this paper, the mean stress effect on high-cycle fatigue life was evaluated for three nominally identical batches of cast Ni-base superalloy Inconel 713LC under load symmetrical cycling and cycling with tensile mean load.
81
Casting defects and high temperature fatigue life of IN 713LC superalloy
TL;DR: In this article, the authors used optical microscopy on metallographic sections and an analysis of the size distribution by extreme value statistics indicates two types of defects: (i) small isolated defects and (ii) defect clusters consisting of complicated interconnected shrinkages.
71