Next Article in Journal
Magnesium Matrix Composite Foams—Density, Mechanical Properties, and Applications
Next Article in Special Issue
Preparation and Characterization of Directionally Freeze-cast Copper Foams
Previous Article in Journal
Dehydrogenation Kinetics and Modeling Studies of MgH2 Enhanced by Transition Metal Oxide Catalysts Using Constant Pressure Thermodynamic Driving Forces
Previous Article in Special Issue
Dynamic Behavior of Hybrid APM (Advanced Pore Morphology Foam) and Aluminum Foam Filled Structures
Article Menu

Export Article

Open AccessArticle
Metals 2012, 2(3), 229-237; doi:10.3390/met2030229

Rate Dependence of the Compressive Response of Ti Foams

1
Department of Engineering Science, University of Oxford, Parks Road, Oxford OX13PJ, UK
2
Department of Aeronautics, Imperial College London, South Kensington Campus, London SW72AZ, UK
3
NRC Canada, Industrial Materials Institute, 75 de Mortagne, Boucherville QC J4B6Y4, Canada
*
Author to whom correspondence should be addressed.
Received: 27 April 2012 / Revised: 22 May 2012 / Accepted: 20 June 2012 / Published: 29 June 2012
View Full-Text   |   Download PDF [653 KB, uploaded 29 June 2012]   |  

Abstract

Titanium foams of relative density ranging from 0.3 to 0.9 were produced by titanium powder sintering procedures and tested in uniaxial compression at strain rates ranging from 0.01 to 2,000 s−1. The material microstructure was examined by X-ray tomography and Scanning Electron Microscopy (SEM) observations. The foams investigated are strain rate sensitive, with both the yield stress and the strain hardening increasing with applied strain rate, and the strain rate sensitivity is more pronounced in foams of lower relative density. Finite element simulations were conducted modelling explicitly the material’s microstructure at the micron level, via a 3D Voronoi tessellation. Low and high strain rate simulations were conducted in order to predict the material’s compressive response, employing both rate-dependant and rate-independent constitutive models. Results from numerical analyses suggest that the primary source of rate sensitivity is represented by the intrinsic sensitivity of the foam’s parent material. View Full-Text
Keywords: titanium foams; FE; Voronoi; X-ray tomography; strain rate titanium foams; FE; Voronoi; X-ray tomography; strain rate
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Siegkas, P.; Tagarielli, V.L.; Petrinic, N.; Lefebvre, L.-P. Rate Dependence of the Compressive Response of Ti Foams. Metals 2012, 2, 229-237.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top