Description
general research area:
1. IoP ASCR, P. Sittner,
V. Novak, J. Gemperlova
Deformation
and transformation processes in solids -
experiment and theory, martensitic transformations,
shape memory alloys, single crystal growth
and characterization, thermomechanical experiments,
TEM, micromechanics modelling.
Experimental equipment: Optical Floating zone furnace CRYSTAL
SYSTEMS, INSTRON testing machines - 1362
and Fast Track 8870, Rotating anode X-ray
source RIGAKU RU-300, TEM JEOL 1200EX with
double tilt in-situ straining holder and
MEGAVIEW III camera, DSC PERKIN-ELMER, optical
microscope OPTON with image analyser LUCIA.
2.
IT ASCR, M. Landa,
F. Marsik, A. Machova
Acoustic
emission and ultrasonic investigation of
solids and solid-solid transformations in-situ
during thermomechanical loads, evaluation
of elastic constants on single crystals,
thermodynamics of solids, atomistic modelling
by molecular dynamics, continuum mechanics.
Experimental
equipment
: equipment for Resonant Ultrasound
Spectroscopy and Pulse-echo ultrasonic measurements
including: two channel Ultrasonic Pulser/Receiver
Sofratest SFT4003B (13MHz bandwidth), Pulser/Receiver
system JSR Ultrasonics DPR50+ (50MHz bandwidth),
DSO LeCroy 9304AM (200MHz, 100MS/s), Waverunner
2 (350MHz,1GS/s), purpose made ultrasound
scanning device for plate or tube specimens.
The pulse acoustic microscope OLYMPUS UH
Pulse100 (frequency range 5-200MHz, scanning
width 1-80mm), testing machines TIRATEST2300
(100kN) and INSTRON 1193/58 (tension, compression,
bending).
3. NPI ASCR, P. Lukas
Neutron
diffraction methods applied to study deformation
and transformation processes in solids -
in-situ studies of lattice strains and phase
fractions in solids exposed to stress and
temperature loads, residual stress mapping
in materials, texture measurements under
stress.
Experimental
equipment
: dedicated neutron diffractometers
at medium power reactor LWR-15 in Rez near
Prague including 1) high resolution in-situ
stress/strain diffractometer TKSN400, 2)
multi purpose two-axis diffractometer SPN100,
3) texture diffractometer TEXDIF and 4)
double crystal SANS difractometer DN-2 suitable
for applications in the field of phase transformations
in solids.
4.
IITA ASCR, T. Roubicek,
M. Kruzik
Multiscale
modelling based on the theory of nonlinear
partial differential equations in continuum
physics, rate-independent processes, mathematical
and numerical analysis, computational simulations,
applications to shape memory alloys and
ferromagnetics in case of bulks, relaxation
non(quasi)convex problems from the viewpoint
of both analysis and numerical realization
5.
MI ASCR, M. Silhavy
Thermodynamics
of phase transformations in solids, lattice
geometry of martensitic transformations,
deffective crystals, relaxed energies; general
continuum mechanics.
6.
CTU, J. Kratochvil
Continuum
mechanics of solid phase, instability
modes of the crystal lattice at large
strain, nonlocal models of crystal
lattice plasticity, formation of microstructure
with a length scale controlled by the
interaction among crystal lattice defects,
variational formulation of the problem,
detailed study of fcc and bcc lattices.
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