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"
}