75 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Czech Academy of SciencesCZ23 papers
- Charles UniversityCZ19 papers
- Czech Technical University in PragueCZ18 papers
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ11 papers
- University of Colorado DenverUS7 papers
- Czech Academy of Sciences, Institute of Information Theory and AutomationCZ4 papers
- Czech Academy of Sciences, Institute of MathematicsCZ4 papers
- University of Southern CaliforniaUS4 papers
- Brno University of TechnologyCZ3 papers
- Universidad de SevillaES3 papers
- University of Maryland, College ParkUS3 papers
- University of West Bohemia in PilsenCZ3 papers
20 papers · 1 filter
A high-dimensional neural network potential for finite-temperature phenomena in NiTi martensite
Petr Jaroš, Petr Sedlák, Petr Šesták +3
We present a high-dimensional neural network potential (HDNNP) for the martensitic phase of the NiTi shape-memory alloy trained to density functional theory (DFT) data. A central a…
Anomalous thermal and elastic properties of an epitaxial NiTi film exhibiting R-phase
Kristýna Repček, Tomáš Grabec, David Mareš +8
Shape memory alloys like NiTi are at the core of emerging thermal management applications, including elastocaloric refrigeration, thermoelastic harvesting, and latent heat storage.…
Monitoring Gallium-Induced Damage in Aluminum Alloys Using Nonlinear Resonant Ultrasound Spectroscopy
Jan Kober, Radovan Zeman, Josef Krofta +2
Nonlinear Resonant Ultrasound Spectroscopy is a nonlinear ultrasonic technique which allows monitoring small variations in the microstructure of a medium and thus allows materials…
Study of the acoustic and thermal response of an elastically anisotropic solid to a sub-nanosecond laser pulse in transient grating spectroscopy
Jakub Kušnír, Tomáš Grabec, Petr Sedlák +2
Transient grating spectroscopy (TGS) is a material characterization technique based on laser-induced thermoelastic excitation of thermal and acoustic gratings. On opaque samples, t…
Ultra-transient grating spectroscopy for visualization of surface acoustics
Tomáš Grabec, Pavla Stoklasová, Kristýna Repček +5
Ultrasonic wave propagation across material surfaces reveals essential information about the materials' elastic behavior. All direction- and frequency-dependent features of the pro…
Magneto-elastic softening in cold-sprayed polycrystalline nickel studied by resonant ultrasound spectroscopy
Michaela Janovská, Petr Sedlák, Martin Ševčík +5
Cold-sprayed metallic deposits are additively manufactured materials containing high levels of compressive residual stress. Here we show that the presence and intensity of this str…
In-situ observation of elastic instability of stress-induced B19 martensite in thin NiTi wires
Petr Sedlák, Miroslav Frost, Martin Ševčík +2
A laser-ultrasonic approach was used to measure elastic properties of a superelastic nickel-titanium wire with the aim to evaluate their evolution with stress and temperature in st…
Finite-strain constitutive model for shape memory alloys formulated in the logarithmic strain space
Alexej Moskovka, Martin Horák, Jan Valdman +4
This work presents a finite-strain version of an established three-dimensional constitutive model for polycrystalline shape memory alloys (SMA) that is able to account for the larg…
Elastic constants of single-crystalline NiTi studied by resonant ultrasound spectroscopy
Lucie Bodnárová, Michaela Janovská, Martin Ševčík +6
Contactless, laser-based resonant ultrasound spectroscopy was utilized to monitor changes in elastic properties in single-crystalline NiTi shape memory alloy. It was observed that…
Shear Deformation of Nonmodulated NiMnGa Martensite: An Ab Initio Study
Martin Heczko, Petr Šesták, Hanuš Seiner +1
The impact of shear deformation in system of non-modulated (NM) martensite in NiMnGa ferromagnetic shape memory alloy is investigated by means of ab…
Compliant Lattice Modulations Enable Anomalous Elasticity in Ni-Mn-Ga Martensite
Kristýna Repček, Pavla Stoklasová, Tomáš Grabec +8
High mobility of twin boundaries in modulated martensites of Ni-Mn-Ga-based ferromagnetic shape memory alloys holds a promise for unique magnetomechanical applications. This featur…
Scanning acoustic microscopy characterization of cold sprayed coatings deposited on grooved substrates
Martin Koller, Jan Cizek, Michaela Janovská +4
The effect of non-planar substrate surface on homogeneity and quality of cold sprayed (CS) deposits was studied by scanning acoustic microscopy (SAM). Fe coatings were cold sprayed…
Kwinking as the plastic forming mechanism of B19' NiTi martensite
Hanuš Seiner, Petr Sedlák, Miroslav Frost +1
Irreversible plastic forming of B19 martensite of the NiTi shape memory alloy is discussed within the framework of continuum mechanics. It is suggested that the main mecha…
Building hierarchical martensite
Stefan Schwabe, Robert Niemann, Anja Backen +7
Martensitic materials show a complex, hierarchical microstructure containing structural domains separated by various types of twin boundaries. Several concepts exist to describe th…
Thermomechanical model for NiTi-based shape memory alloys covering macroscopic localization of martensitic transformation
M. Frost, B. Benešová, H. Seiner +3
The work presents a thermomechanical model for polycrystalline NiTi-based shape memory alloys developed within the framework of generalized standard solids, which is able to cover…
Branching of twins in shape memory alloys revisited
Hanus Seiner, Paul Plucinsky, Vivekanand Dabade +2
We study the branching of twins appearing in shape memory alloys at the interface between austenite and martensite. In the framework of three-dimensional non-linear elasticity theo…
Graphene under direct compression: stress effects and interlayer coupling
Elena del Corro, Miriam Pena-Alvarez, Michal Mracko +4
In this work we explore mechanical properties of graphene samples of variable thickness. For this purpose, we coupled a high pressure sapphire anvil cell to a micro-Raman spectrome…
Nucleation and growth of hierarchical martensite in epitaxial shape memory films
Robert Niemann, Anja Backen, Sandra Kauffmann-Weiss +7
Shape memory alloys often show a complex hierarchical morphology in the martensitic state. To understand the formation of this twin-within-twins microstructure, we examine epitaxia…
Thermally induced changes of structure in NiMnGa magnetic shape memory single crystals with very low twinning stress
Ladislav Straka, Jan Drahokoupil, Oliva Pacherová +4
In search for the origins of the extraordinary low twinning stress of Ni-Mn-Ga magnetic shape memory alloys we studied the thermally induced changes of structure in NiMn$_{2…
Thermo-mechanical FE model with memory effect for 304L austenitic stainless steel presenting microstructure gradient
Anne Le Pécheur, Francois Curtit, Michel Clavel +3
The main purpose of this study is to determine, via a three dimensions Finite Element analysis (FE), the stress and strain fields at the inner surface of a tubular specimen submitt…