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@ARTICLE{Wang:874602,
author = {Wang, Yule and Eikerling, Michael},
title = {{F}racture dynamics of correlated percolation on ionomer
networks},
journal = {Physical review / E},
volume = {101},
number = {4},
issn = {1063-651X},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2020-01530},
pages = {042603},
year = {2020},
abstract = {This article presents a random network model to the study
fracture dynamics on a scaffold of charged and elastic
ionomer bundles that constitute the stable skeleton of a
polymer electrolyte membrane. The swelling pressure upon
water uptake by this system creates the internal stress
under which ionomer bundles undergo breakage. Depending on
the local stress and the strength of bundle-to-bundle
correlations, different fracture regimes can be observed. We
use kinetic Monte Carlo simulations to study these dynamics.
The breakage of individual bundles is described with an
exponential breakdown rule and the stress transfer from
failed to intact bundles is assumed to exhibit a
power-law-type spatial decay. A central property considered
in the analysis is the frequency distribution of percolation
thresholds, which is employed to analyze fracture regimes as
a function of the stress and the effective range of stress
transfer. Based on this distribution, we introduce an order
parameter for the transition from random breakage to crack
growth regimes. Moreover, as a practically important
outcome, the time to fracture is analyzed as a descriptor
for the lifetime of polymer electrolyte membranes.},
cin = {IEK-13},
ddc = {530},
cid = {I:(DE-Juel1)IEK-13-20190226},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32422712},
UT = {WOS:000524328800004},
doi = {10.1103/PhysRevE.101.042603},
url = {https://juser.fz-juelich.de/record/874602},
}