fulltext.study @t Gmail

Modelling of fracture behaviour in biomaterials ☆

Paper ID Volume ID Publish Year Pages File Format Full-Text
11160 722 2007 10 PDF Available
Title
Modelling of fracture behaviour in biomaterials ☆
Abstract

One of the most frequent causes of degradation and failure of quasi-brittle biomaterials is fracture. Mechanical breakdown, even when not catastrophic, is of particular importance in the area of biomaterials, as there are many clinical situations where it opens the path for biologically mediated failures. Over the past few decades the materials/biomaterials community has developed a number of numerical models, but only with limited incorporation of brittle failure phenomena. This article investigates the ability of a non-linear elastic fracture mechanics (NLEFM) model to reliably predict failure of biomaterials with a specific focus on the clinical settings of restorative dentistry. The approach enables one to predict fracture initiation and propagation in a complex biomechanical status based on the intrinsic material properties of the components. In this paper, we consider five examples illustrating the versatility of the present approach, which range from the failure of natural biomaterials, namely dentine and enamel, to a restored tooth, a three unit all ceramic bridge structure and contact-induced damage in the restorative layered materials systems. It is anticipated that this approach will have ramifications not only to model fracture events but also for the design and optimisation of the mechanical properties of biomaterials for specific clinically determined requirements.

Keywords
Fracture; Strain softening; Brittle; Dental biomaterials; Finite element analysis
First Page Preview
Modelling of fracture behaviour in biomaterials ☆
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 28, Issue 7, March 2007, Pages 1317–1326
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering