Varnik, F.: Can microscale wall roughness trigger unsteady/chaotic flows ? 5th International Workshop on Complex Systems, American Institute of Physics, Sendai, Japan (2007)
Varnik, F.: Two-dimensional lattice Boltzmann studies of the effects of wall roughness/channel design on the flow at moderate Reynolds numbers. IUTAM Symposium on Advances in Micro-& Nanofluidics, Dresden, Germany (2007)
Varnik, F.: Lattice Boltzmann studies of binary liquids and liquid-vapor systems beyond equilibrium. Leibniz Institute for Polymer Research, Dresden, Germany (2007)
Varnik, F.: A comprehensive introduction to lattice Boltzmann methods in materials science and engineering. Fritz-Haber Institut der Max-Planck Gesellschaft, Berlin, Germany (2007)
Varnik, F.: Non linear rheology and dynamic yielding in a simple glass: A molecular dynamics study. School of Physics, University of Edinburgh, UK (2006)
Varnik, F.: Chaotic lubricant flows in metal forming: Some new insights from lattice Boltzmann simulations. Seminar Talk at MPI für Eisenforschung GmbH, Düsseldorf, Germany (2006)
Varnik, F.: Lattice Boltzmann simulations of moderate Reynolds number flows in strongly confined channels: The role of the wall roughness. Massachussets Institute of Technology (MIT), Boston, MA, USA (2006)
Varnik, F.: MD simulations of steady state yielding in a simple glass. 31st Middle Euoropean Cooperation on Statistical Physics (MECO31), Primošten, Croatia (2006)
Varnik, F.: Rheological response of a model glass: Theory versus computer simulation. 2nd International workshop on dynamics in viscous liquids, Mainz, Germany (2006)
Varnik, F.; Raabe, D.: Lattice Boltzmann studies of flow instability in microchannels: The role of the surface roughness/topology. Laboratoire de Physique et de la Matiere Condensee et Nanostructure, Universite Claude Bernard, Lyon1, France (2005)
Varnik, F.: Complex rheology of simple systems: Shear thinning, dynamic versus static yielding and flow heterogeneity. CECAM-Workshop on Simulating deformed glasses and melts: From simple liquids to polymers, Lyon, France (2005)
Varnik, F.: Rheology of dense amorphous systems: Recent theories versus molecular dynamics simulations. 5th International Discussion Meeting on Relaxation in Complex Systems, Lille, France (2005)
Hydrogen in aluminium can cause embrittlement and critical failure. However, the behaviour of hydrogen in aluminium was not yet understood. Scientists at the Max-Planck-Institut für Eisenforschung were able to locate hydrogen inside aluminium’s microstructure and designed strategies to trap the hydrogen atoms inside the microstructure. This can…
Hydrogen induced embrittlement of metals is one of the long standing unresolved problems in Materials Science. A hierarchical multiscale approach is used to investigate the underlying atomistic mechanisms.
Hydrogen embrittlement affects high-strength ferrite/martensite dual-phase (DP) steels. The associated micromechanisms which lead to failure have not been fully clarified yet. Here we present a quantitative micromechanical analysis of the microstructural damage phenomena in a model DP steel in the presence of hydrogen.
This project will aim at developing MEMS based nanoforce sensors with capacitive sensing capabilities. The nanoforce sensors will be further incorporated with in situ SEM and TEM small scale testing systems, for allowing simultaneous visualization of the deformation process during mechanical tests
Nickel-based alloys are a particularly interesting class of materials due to their specific properties such as high-temperature strength, low-temperature ductility and toughness, oxidation resistance, hot-corrosion resistance, and weldability, becoming potential candidates for high-performance components that require corrosion resistance and good…
Understanding hydrogen-assisted embrittlement of advanced structural materials is essential for enabling future hydrogen-based energy industries. A crucially important phenomenon in this context is the delayed fracture in high-strength structural materials. Factors affecting the hydrogen embrittlement are the hydrogen content,...
Thermo-chemo-mechanical interactions due to thermally activated and/or mechanically induced processes govern the constitutive behaviour of metallic alloys during production and in service. Understanding these mechanisms and their influence on the material behaviour is of very high relevance for designing new alloys and corresponding…
Within this project, we will investigate the micromechanical properties of STO materials with low and higher content of dislocations at a wide range of strain rates (0.001/s-1000/s). Oxide ceramics have increasing importance as superconductors and their dislocation-based electrical functionalities that will affect these electrical properties. Hence…