Publication detail
Computational analysis of crack bridging in Bioglass®–based porous scaffolds by using polymer coatings
KOTOUL, M. SKALKA, P.
Czech title
Výpočetní analýza přemostění trhliny polymerním povlakem v keramické pěně Bioglass®
English title
Computational analysis of crack bridging in Bioglass®–based porous scaffolds by using polymer coatings
Type
conference paper
Language
en
Original abstract
The main drawback still impairing the use of bioactive glasses in load-bearing applications is their intrinsic brittleness. The addition of coating constituted by polyvinyl alcohol (PVA) and microfibrillated cellulose (MFC) PVA/MFC led to a 10 fold increase of compressive strength and a 20 fold increase of tensile strength in comparison with non-coated scaffolds. Crack bridging by polymer coating was identified by fractographic observations as a main toughening mechanism. In this contribution a detailed computational analysis of crack bridging due to coating film fibrils is presented and an improvement of fracture resistance of coated scaffolds is explained.
English abstract
The main drawback still impairing the use of bioactive glasses in load-bearing applications is their intrinsic brittleness. The addition of coating constituted by polyvinyl alcohol (PVA) and microfibrillated cellulose (MFC) PVA/MFC led to a 10 fold increase of compressive strength and a 20 fold increase of tensile strength in comparison with non-coated scaffolds. Crack bridging by polymer coating was identified by fractographic observations as a main toughening mechanism. In this contribution a detailed computational analysis of crack bridging due to coating film fibrils is presented and an improvement of fracture resistance of coated scaffolds is explained.
Keywords in Czech
bioaktivní kermická pěna, přemostění trhliny, FE modelování, mechanismus zhouževnatění
Keywords in English
bioactive glass scaffold, crack bridging, FE modeling, toughening mechanism
Released
05.01.2017
Publisher
Trans Tech Publications
Location
Switzerland
ISBN
978-3-03835-626-4
ISSN
1012-0394
Book
Materials Structure and Micromechanics of Fracture VIII
Pages from–to
325–328
Pages count
4
BIBTEX
@inproceedings{BUT132102,
author="Michal {Kotoul} and Petr {Skalka},
title="Computational analysis of crack bridging in Bioglass®–based porous scaffolds by using polymer coatings ",
booktitle="Materials Structure and Micromechanics of Fracture VIII",
year="2017",
month="January",
pages="325--328",
publisher="Trans Tech Publications",
address="Switzerland",
isbn="978-3-03835-626-4",
issn="1012-0394"
}