Detail publikace
Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating
KOTOUL, M. SKALKA, P. ŠEVEČEK, O. BERTOLLA, L. MERTENS, J.MARCIÁN, P. CHAWLA, N.
Anglický název
Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
The paper deals with crack bridging modelling in Bioglass ®based scaffolds due the presence of a spe- cial polymer coating. This includes a careful modelling of the scaffold which is based on x-ray computed micro-tomography (micro-CT) scans and identification of bridging mechanism with the aid of extensive fractographic observations of coated, broken struts. A replacement of the real structure of scaffold by a periodic model utilizing Kelvin cell whose size corresponds to the mean cell size of the real foam is discussed. The struts of the idealized foam are modelled using the beam elements. A detailed computa- tional analysis of crack bridging due to coating film fibrils under plane strain conditions is presented and an improvement of fracture resistance of coated scaffolds is explained.
Anglický abstrakt
The paper deals with crack bridging modelling in Bioglass ®based scaffolds due the presence of a spe- cial polymer coating. This includes a careful modelling of the scaffold which is based on x-ray computed micro-tomography (micro-CT) scans and identification of bridging mechanism with the aid of extensive fractographic observations of coated, broken struts. A replacement of the real structure of scaffold by a periodic model utilizing Kelvin cell whose size corresponds to the mean cell size of the real foam is discussed. The struts of the idealized foam are modelled using the beam elements. A detailed computa- tional analysis of crack bridging due to coating film fibrils under plane strain conditions is presented and an improvement of fracture resistance of coated scaffolds is explained.
Klíčová slova anglicky
Irregular foam structure; Voronoi tessellation; FEM; Polymer coating; Crack bridging
Vydáno
19.04.2017
Nakladatel
Elsevier
ISSN
0167-6636
Ročník
110
Číslo
1
Strany od–do
16–28
Počet stran
13
BIBTEX
@article{BUT137250,
author="Michal {Kotoul} and Petr {Skalka} and Oldřich {Ševeček} and Luca {Bertolla} and Petr {Marcián},
title="Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating",
year="2017",
volume="110",
number="1",
month="April",
pages="16--28",
publisher="Elsevier",
issn="0167-6636"
}