10 Papers
11 Citations
Tomáš Oplt is an academic researcher from Academy of Sciences of the Czech Republic. The author has contributed to research in topics: Crack closure & Curvature. The author has an hindex of 3, co-authored 7 publications. Previous affiliations of Tomáš Oplt include Brno University of Technology.
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Papers
Effect of the free surface on the fatigue crack front curvature at high stress asymmetry
TL;DR: In this paper, the effect of the vertex singularity on the fatigue crack front behavior was investigated, and two methodologies used for the fracture front shape estimation were compared using finite element analysis, one is using stress singularity exponent as a controlling parameter and the second one using stress intensity factor.
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Strategy of plasticity induced crack closure numerical evaluation
Tomáš Oplt,Tomáš Oplt,Marek Šebík,Marek Šebík,Filippo Berto,Luboš Náhlík,Pavel Pokorný,Pavel Hutař +7 more
TL;DR: In this article, a method of closure level determination based on change in specimen stiffness is described, and its performance is compared to the traditional first node displacement method with Load-Debond-Unload (LDU) and load-debond-unload-load-Load-Unloading (LDULU) loading schemes.
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Numerical modelling of fatigue crack closure and its implication on crack front curvature using ΔCTODp
TL;DR: In this paper , the authors presented 3D finite element analyses of the influences of crack front shape, inserted cycles and crack closure on the crack driving force in terms of ΔKeff and ΔCTODp (plastic part of crack tip opening displacement range).
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Microstructure and the fatigue crack propagation in the dissimilar low alloy/stainless steel GMAW welded joints
TL;DR: In this article , two dissimilar joints were prepared by gas metal arc welding (GMAW) using different low alloy steels, and the microstructure of both joints was extensively studied using electron microscopy methods, with the emphasis taken on the interface between low alloy steel and weld metal.
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Classically determined effective ΔK fails to quantify crack growth rates
Tomáš Vojtek,Tomáš Vojtek,Pavel Pokorný,Tomáš Oplt,Tomáš Oplt,Michal Jambor,Luboš Náhlík,Diego Herrero,Pavel Hutař +8 more
TL;DR: In this paper, the authors measured the difference between Kmax values and the effective ΔKeff values (measured at the load ratio R = 0.8) corresponding to the same crack growth rate.
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