Computational Analysis of Crack Bridging in Bioglass®-Based Porous Scaffolds by Using Polymer Coatings

Michal Kotoul; Petr Skalka

doi:10.4028/www.scientific.net/SSP.258.325

Paper Titles

Surface Roughness Effects on the Fatigue Behavior of As-Machined Inconel718
p.306

Stress Intensity Factors for Rough Cracks Loaded in Mode II
p.310

Correlation of Fatigue Limit and Crack Growth Threshold Value to the Nanobainitic Microstructure
p.314

Study of Fracture Resistance of Nanolaminate Coatings Using Indentation and Impact Tests
p.318

Computational Analysis of Crack Bridging in Bioglass^®-Based Porous Scaffolds by Using Polymer Coatings
p.325

Links between the Orientation of Vascular Smooth Muscle and Microscopical Composition of Aortic Segments
p.329

Fracture Mechanism of Interpenetrating Iron-Tricalcium Phosphate Composite
p.333

Influence of Defects on High Cycle Fatigue Response of Ti45Nb Biocompatible Alloy
p.337

Histological Composition and Mechanical Properties of Cryopreserved Samples of Aortic and Pulmonary Valves
p.341

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Computational Analysis of Crack Bridging in Bioglass^®-Based Porous Scaffolds by Using Polymer Coatings

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.