Gueguen, O.; Ahzi, S.; Makradi, A.; Belouettar, S.; Nikolov, S.; Lebensohn, R. A.: Micromechanical Modeling of Plastic Deformation and Texture Evolution in Semi-Crystalline Polymers: Self-Consistent vs. an Upper Bound Approach. 15th International Conference on the Texture of Materials (ICOTOM 15), Pittsburgh, PA, USA (2008)
Nikolov, S.; Raabe, D.; Sachs, C.; Fabritius, H.: Hierarchical modeling of the mechanical properties of hard biological tissues: Bone and lobster cuticle. MSU conference, MPIE Düsseldorf, Germany (2008)
Fabritius, H.; Sachs, C.; Nikolov, S.; Romano, P.; Hild, S.; Raabe, D.: Wie beeinflussen Struktur und chemische Zusammensetzung auf unterschiedlichen Längenskalen die mechanischen Eigenschaften von biologischen Materialien ? Institute Colloquium, Department of Polymer Science, Johannes Kepler University Linz (JKU), Linz, Austria (2008)
Nikolov, S.; Sachs, C.; Counts, W. A.; Fabritius, H.; Raabe, D.: Modeling of the Mechanical Behavior of Bone at Submicron Scale through Mean-Field Homogenization. European Congress and Exhibition on Advanced Materials and Processes (EUROMAT 2007), Nürnberg, Germany (2007)
Sachs, C.; Fabritius, H.; Nikolov, S.; Raabe, D.: Influence of structural principles on the mechanics and efficiency of different biological materials using lobster cuticle as a model material. DPG Spring Meeting, Regensburg, Germany (2007)
Nikolov, S.; Sachs, C.; Fabritius, H.; Raabe, D.: Microstructure and micromechanics of hard biological tissues: From lobster cuticle to human bone. Seminar talk at Université Catholique de Louvain, Dept. of Applied Sciences, Louvain, Belgium (2007)
Nikolov, S.; Raabe, D.; Roters, F.: A Constitutive Model for Glassy Polymers with Shear Transformation Zones Plasticity and Reptation-Based Viscoelasticity. MMM Third International Conference Multiscale Materials Modeling, Freiburg, Germany (2006)
Sachs, C.; Nikolov, S.; Fabritius, H.; Raabe, D.: Investigation and Modeling of the Elastic Properties of Lobster Cuticle Depending on its Grade of Mineralization. MRS Spring Meeting, San Francisco, CA, USA (2008)
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…
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
The project aims to study corrosion, a detrimental process with an enormous impact on global economy, by combining denstiy-functional theory calculations with thermodynamic concepts.
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.
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…
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,...
Understanding hydrogen-assisted embrittlement of advanced high-strength steels is decisive for their application in automotive industry. Ab initio simulations have been employed in studying the hydrogen trapping of Cr/Mn containing iron carbides and the implication for hydrogen embrittlement.
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…