Publication detail

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.

Original Title

Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

Irregular foam structure; Voronoi tessellation; FEM; Polymer coating; Crack bridging

Authors

KOTOUL, M.; SKALKA, P.; ŠEVEČEK, O.; BERTOLLA, L.; MERTENS, J.;MARCIÁN, P.; CHAWLA, N.

Released

19. 4. 2017

Publisher

Elsevier

ISBN

0167-6636

Periodical

Mechanics of Materials

Year of study

110

Number

1

State

Kingdom of the Netherlands

Pages from

16

Pages to

28

Pages count

13

URL

http://www.sciencedirect.com.ezproxy.lib.vutbr.cz/science/article/pii/S0167663616301685

BibTex

@article{BUT137250,
  author="KOTOUL, M. and SKALKA, P. and ŠEVEČEK, O. and BERTOLLA, L. and MERTENS, J. and MARCIÁN, P. and CHAWLA, N.",
  title="Crack bridging modelling in Bioglass ®based scaffolds reinforced by poly-vinyl alcohol/microfibrillated cellulose composite coating",
  journal="Mechanics of Materials",
  year="2017",
  volume="110",
  number="1",
  pages="16--28",
  doi="10.1016/j.mechmat.2017.04.004",
  issn="0167-6636",
  url="http://www.sciencedirect.com.ezproxy.lib.vutbr.cz/science/article/pii/S0167663616301685"
}