Fracture in Polymer Composites: Nano to Meso

Third Party Funds Group - Sub project

Overall project details

Overall project: Fracture across Scales: Integrating Mechanics, Materials Science, Mathematics, Chemistry, and Physics (FRASCAL)

Overall project speaker:
Prof. Dr.-Ing. Paul Steinmann (Lehrstuhl für Technische Mechanik)

Project Details

Project leader:
Prof. Dr. Dirk Zahn
Dr. Paolo Moretti

Contributing FAU Organisations:
Lehrstuhl für Werkstoffsimulation
Professur für Theoretische Chemie
Zentralinstitut für Scientific Computing (ZISC)

Funding source: DFG / Graduiertenkolleg (GRK)
Acronym: GRK2423 - P3
Start date: 02/01/2019
End date: 30/06/2023

Abstract (technical / expert description):

The abrasion and fracture toughness of polymers can considerably be
increased by adding hard nanoparticles such as silica. This is
mainly caused by the development of localized shear bands, initiated by
the stress concentrations stemming from the inhomogeneity of the
composites. Other mechanisms responsible for toughening are debonding of
the particles and void growth in the polymer matrix. Both phenomena
strongly depend on the structure and chemistry of the polymers and shall
be explored for branched networks (epoxy) and matrices of nestled
fibres (cellulose, aramid).

The goal of the present project is to develop and apply dynamics
simulation approaches to understanding polymer-nanoparticle and
polymer-polymer interactions at i) the atomic scale and ii) at larger
scales using coarse-graining.

Last updated on 2019-15-02 at 13:31