Explore the words cloud of the microKIc project. It provides you a very rough idea of what is the project "microKIc" about.
The following table provides information about the project.
Coordinator |
FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN NUERNBERG
Organization address contact info |
Coordinator Country | Germany [DE] |
Total cost | 1˙996˙570 € |
EC max contribution | 1˙996˙570 € (100%) |
Programme |
1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC)) |
Code Call | ERC-2016-COG |
Funding Scheme | ERC-COG |
Starting year | 2017 |
Duration (year-month-day) | from 2017-05-01 to 2022-04-30 |
Take a look of project's partnership.
# | ||||
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1 | FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN NUERNBERG | DE (ERLANGEN) | coordinator | 1˙699˙175.00 |
2 | CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS | FR (PARIS) | participant | 297˙395.00 |
The resistance to crack propagation is undoubtedly one of the most important properties of structural materials. However, our current mechanistic understanding of the fracture processes in typical semi-brittle materials like steels, refractory metals or semiconductors is not sufficiently advanced to predict the fracture toughness KIc and its dependence on the microstructure, temperature and strain rate. Therefore, KIc is commonly regarded as a phenomenological material parameter for fracture mechanics models that require experimental calibration.
The aim of microKIc is to study fracture in model materials in order to gain a detailed understanding of the microscopic crack-tip processes during fracture initiation, propagation and arrest, and to systematically study the interactions of cracks with constituents of the microstructure like dislocations, voids, precipitates and grain boundaries. To this end, we will perform fully 3D, large-scale atomistic simulations on cracks in bcc-based materials (W, NiAl) with varying crack orientation, crack front quality, and in the presence of dislocations and microstructural obstacles. The obtained criteria for crack advance and dislocation nucleation at crack tips will be implemented in a coupled finite element - discrete dislocation dynamics code, which will allow for the first time a fully 3D study of fracture and crack-tip plasticity at the mesoscale. The simulations will be compared to in-situ micro-mechanical tests on well-characterized fracture specimens produced by focused ion beam milling.
The ultimate goal of microKIc is to use this experimentally validated multiscale modelling framework to develop a microstructure-sensitive, physics-based micromechanical model of the fracture toughness, which will be tested against macroscopic fracture experiments. Such predictive models are crucial for the development of new failure-resistant materials and for improved design guidelines for safety-relevant structures and components.
year | authors and title | journal | last update |
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2019 |
Eva I. Preiß, Hao Lyu, Jan P. Liebig, Gunther Richter, Florentina Gannott, Patric A. Gruber, Mathias Göken, Erik Bitzek, Benoit Merle Microstructural dependence of the fracture toughness of metallic thin films: A bulge test and atomistic simulation study on single-crystalline and polycrystalline silver films published pages: 3483-3494, ISSN: 0884-2914, DOI: 10.1557/jmr.2019.262 |
Journal of Materials Research 34/20 | 2020-01-29 |
2018 |
Johannes J. Möller, Erik Bitzek, Rebecca Janisch, Hamad ul Hassan, Alexander Hartmaier Fracture ab initio: A force-based scaling law for atomistically informed continuum models published pages: 3750-3761, ISSN: 0884-2914, DOI: 10.1557/jmr.2018.384 |
Journal of Materials Research 33/22 | 2019-04-18 |
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