If you are interested in Bachelor's or Master's theses or work as a research assistant in the field of crack propagation, please send me an email for topics and further details.
A recently published article made it on the cover page of Polymer Chemistry.
We model the two-stage curing reaction using all-atom molecular dynamics simulations. The systems are simulated and the results are used to evaluate the chemical reaction process and then to identify the resulting material’s macroscopic properties and behaviour. These properties are determined at different crosslinking stages of the curing process providing a unique insight into the development of these parameters during the chemical reaction.
Crack propagation based on the phase-field method
Due to its ability to implicitly track free-boundary movements, the phase-field method is predestinated for modelling and simulating crack propagation.
- New modelling approaches for enhanced consistency with Griffith’s theory
- Inclusion of different crack modes
- Multiphase-field compatibility
Curing process of a fibre-reinforced thermoset
Fibre-reinforced polymers, much like other materials, are exposed to production induced eigenstrains/-stresses and micro-crack formation. Their influence on material behaviour and service life must commonly be considered. To obtain a more profound understanding about how eigenstrains/-stresses and cracks are induced, this project mainly focuses on the curing process of glass fibre-reinforced thermosets.
- Modelling based on the phase-field method
- Coupling thermal, mechanical, and curing influences
- Micro-crack propagation
- Molecular dynamics simulations of the curing process, and determination of material properties
Fig. 1: Research on the micro- and nano-scale: Thermoset curing simulations on basis of a phase-field method to predict eigenstresses and micro-cracks, supported by molecular dynamics simulations of the chemical reactions to calculate cure and temperature dependent material properties.