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
60 papers
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…
Sequential topology optimization: SIMP initialization for level-set boundary refinement
Ondřej Ježek, Ján Kopačka, Martin Isoz +1
Density-based topology optimization methods such as SIMP enable efficient topological exploration but produce diffuse material boundaries that require interpretation before manufac…
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.…
Fixed-phase Resonance Tracking for Fast Nonlinear Resonant Ultrasound Spectroscopy
Jan Kober, Radovan Zeman, Marco Scalerandi
Nonlinear Resonant Ultrasound Spectroscopy (NRUS) experiments that rely on repeated sampling of resonance curves are inherently sensitive to measurement protocol due to evolution o…
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…
Anisotropic Minimum Dissipation Subgrid-Scale Model in Hybrid Aeroacoustic simulations of Human Phonation
Martin Lasota, Petr Šidlof, Paul Maurerlehner +2
This article deals with large-eddy simulations of 3D incompressible laryngeal flow followed by acoustic simulations of human phonation of five cardinal english vowels /u, i, \texti…
Quasistatic hypoplasticity at large strains Eulerian
Tomáš Roubíček
The isothermal quasistatic (i.e.\ acceleration neglected) hardening-free plasticity at large strains is considered, based on the standard multiplicative decomposition of the total…
A convective model for poro-elastodynamics with damage and fluid flow towards Earth lithosphere modelling
Tomáš Roubíček, Giuseppe Tomassetti
Devised towards geophysical applications for various processes in the lithosphere or the crust, a model of poro-elastodynamics with inelastic strains and other internal variables l…
A thermodynamical model for paleomagnetism in Earth's crust
Tomáš Roubíček
A thermodynamically consistent model for soft deformable viscoelastic magnets is formulated in actual space (Eulerian) coordinates. The possibility of a ferro-paramagnetic-type (or…
Thermodynamically consistent model for poroelastic rocks towards tectonic and volcanic processes and earthquakes
Tomáš Roubíček
A general-purpose model combining concepts from rational continuum mechanics, fracture and damage mechanics, plasticity, and poromechanics is devised in Eulerian coordinates, invol…
Visco-elastodynamics at large strains Eulerian
Tomáš Roubíček
Isothermal visco-elastodynamics in the Kelvin-Voigt rheology is formulated in the spatial Eulerian coordinates in terms of velocity and deformation gradient. A generally nonconvex…
The Stefan problem in a thermomechanical context with fracture and fluid flow
Tomáš Roubíček
The classical Stefan problem, concerning mere heat-transfer during solid-liquid phase transition, is here enhanced towards mechanical effects. The Eulerian description at large dis…
Coupled time discretisation of dynamic damage models at small strains
Tomáš Roubíček
The dynamic damage model in viscoelastic materials in Kelvin-Voigt rheology is discretised by a scheme which is coupled, suppresses spurious numerical attenuation during vibrations…
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…