Repository logo
  • Log In
    New user? Click here to register.Have you forgotten your password?
University College Dublin
  • Colleges & Schools
  • Statistics
  • All of DSpace
  • Log In
    New user? Click here to register.Have you forgotten your password?
  1. Home
  2. College of Engineering & Architecture
  3. School of Mechanical and Materials Engineering
  4. Mechanical & Materials Engineering Research Collection
  5. Micromechanical Modelling of Advanced Ceramics with Statistically Representative Synthetic Microstructures
 
  • Details
Options

Micromechanical Modelling of Advanced Ceramics with Statistically Representative Synthetic Microstructures

File(s)
FileDescriptionSizeFormat
Download Patricia_Alveen_KEM_paper.pdf2.22 MB
Author(s)
Alveen, Patricia 
McNamara, Declan 
Carolan, Declan 
et al. 
Uri
http://hdl.handle.net/10197/5904
Date Issued
November 2013
Date Available
29T09:46:28Z September 2014
Abstract
Advanced ceramics are a class of material used in extreme conditions, such as high speed turning of aerospace alloys and rock drilling. Their high hardness makes them suitable for these uses, however their lower toughness means that failure due to fracture and chipping is a problem. They are composed of micron-sized particles of a primary hard phase together with either a ceramic or metallic matrix material. A combined experimental-numerical method was used to investigate the role of microstructure on the fracture of advanced ceramics. Two dimensional, statistically representative microstructures of the advanced ceramics are created using Voronoi tessellation. The synthetic microstructures are compared to real microstructures in terms of particle size distribution and particle aspect ratio. Simulation results indicate that the computed elastic parameters are within the Hashin-Shtrikman bounds and agree closely with analytical predictions made with the Eshelby-Mori-Tanaka method. It is found that the local sts and strain distribution within the model is significantly affected by the underlying microstructure, which in turn affects fracture properties. Hence, tailoring the microstructure can optimise the bulk strength parameters of the material.
Type of Material
Journal Article
Publisher
Trans Tech Publications
Journal
Key Engineering Materials
Volume
592-593
Start Page
137
End Page
140
Copyright (Published Version)
2013 Trans Tech Publications
Keywords
  • Advanced ceramics

  • Microstructure

  • Voronoi tessellation

  • Image analysis

DOI
10.4028/www.scientific.net/KEM.592-593.137
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Mechanical & Materials Engineering Research Collection
Scopus© citations
0
Acquisition Date
Jan 28, 2023
View Details
Views
1402
Last Week
1
Last Month
1
Acquisition Date
Jan 29, 2023
View Details
Downloads
286
Last Month
61
Acquisition Date
Jan 29, 2023
View Details
google-scholar
University College Dublin Research Repository UCD
The Library, University College Dublin, Belfield, Dublin 4
Phone: +353 (0)1 716 7583
Fax: +353 (0)1 283 7667
Email: mailto:research.repository@ucd.ie
Guide: http://libguides.ucd.ie/rru

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement