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High strain rate torsion and Bauschinger tests on Ti6AI4V

Jan Peirs UGent, Patricia Verleysen UGent, Kim Verbeken UGent, Frederik Coghe and Joris Degrieck UGent (2012) MATERIALS SCIENCE FORUM. 706-709. p.774-779
abstract
An accurate isotropic and kinematic hardening model and description of the strain rate dependent material behaviour is necessary for simulation of fast forming processes. Consequently, the material model parameter identification requires experiments where large strains, high strain rates and strain path changes can be attained. Usually, quasi-static tension-compression Bauschinger tests are used to assess the materials kinematic hardening. Hereby it's important to have the same specimen geometry and boundary conditions in the forward and reverse loading step which is not easily achieved in high strain rate testing techniques. In this work, high strain rate split Hopkinson bar torsion experiments on Ti6Al4V are carried out to study the constitutive material behaviour at large plastic strain and strain rate. In torsion experiments, due to the absence of cross sectional area reduction, higher strains than in tensile tests can be obtained. In addition, a modified torsional split Hopkinson bar setup is developed to perform dynamic Bauschinger tests. A shear reversed-shear load is applied instead of the classical tension-compression load cycle. The test results are analysed to find out if the technique can be used for characterisation of the kinematic material behaviour. Digital image correlation and finite element simulations are used to improve the interpretation of the experimental results.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
Bauschinger, Ti-6Al-4V, Hopkinson, dynamic, torsion
in
MATERIALS SCIENCE FORUM
Mat. sci. forum
editor
T Chandra, M Ionescu and D Mantovani
volume
706-709
issue title
THERMEC 2011
pages
774 - 779
publisher
Materials Science Forum
place of publication
Switzerland
conference name
7th International Conference on Processing and Manufacturing of Advanced Materials
conference location
Quebec City, QC, Canada
conference start
2011-08-01
conference end
2011-08-05
Web of Science type
Proceedings Paper
Web of Science id
000308517300128
ISSN
0255-5476
DOI
10.4028/www.scientific.net/MSF.706-709.774
language
English
UGent publication?
yes
classification
P1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2069184
handle
http://hdl.handle.net/1854/LU-2069184
date created
2012-03-19 13:45:13
date last changed
2013-03-11 15:41:25
@inproceedings{2069184,
  abstract     = {An accurate isotropic and kinematic hardening model and description of the strain rate dependent material behaviour is necessary for simulation of fast forming processes. Consequently, the material model parameter identification requires experiments where large strains, high strain rates and strain path changes can be attained. Usually, quasi-static tension-compression Bauschinger tests are used to assess the materials kinematic hardening. Hereby it's important to have the same specimen geometry and boundary conditions in the forward and reverse loading step which is not easily achieved in high strain rate testing techniques. In this work, high strain rate split Hopkinson bar torsion experiments on Ti6Al4V are carried out to study the constitutive material behaviour at large plastic strain and strain rate. In torsion experiments, due to the absence of cross sectional area reduction, higher strains than in tensile tests can be obtained. In addition, a modified torsional split Hopkinson bar setup is developed to perform dynamic Bauschinger tests. A shear reversed-shear load is applied instead of the classical tension-compression load cycle. The test results are analysed to find out if the technique can be used for characterisation of the kinematic material behaviour. Digital image correlation and finite element simulations are used to improve the interpretation of the experimental results.},
  author       = {Peirs, Jan and Verleysen, Patricia and Verbeken, Kim and Coghe, Frederik and Degrieck, Joris},
  booktitle    = {MATERIALS SCIENCE FORUM},
  editor       = {Chandra, T and Ionescu , M and Mantovani, D},
  issn         = {0255-5476},
  keyword      = {Bauschinger,Ti-6Al-4V,Hopkinson,dynamic,torsion},
  language     = {eng},
  location     = {Quebec City, QC, Canada},
  pages        = {774--779},
  publisher    = {Materials Science Forum},
  title        = {High strain rate torsion and Bauschinger tests on Ti6AI4V},
  url          = {http://dx.doi.org/10.4028/www.scientific.net/MSF.706-709.774},
  volume       = {706-709},
  year         = {2012},
}

Chicago
Peirs, Jan, Patricia Verleysen, Kim Verbeken, Frederik Coghe, and Joris Degrieck. 2012. “High Strain Rate Torsion and Bauschinger Tests on Ti6AI4V.” In Materials Science Forum, ed. T Chandra, M Ionescu , and D Mantovani, 706-709:774–779. Switzerland: Materials Science Forum.
APA
Peirs, J., Verleysen, P., Verbeken, K., Coghe, F., & Degrieck, J. (2012). High strain rate torsion and Bauschinger tests on Ti6AI4V. In T. Chandra, M. Ionescu , & D. Mantovani (Eds.), MATERIALS SCIENCE FORUM (Vol. 706–709, pp. 774–779). Presented at the 7th International Conference on Processing and Manufacturing of Advanced Materials, Switzerland: Materials Science Forum.
Vancouver
1.
Peirs J, Verleysen P, Verbeken K, Coghe F, Degrieck J. High strain rate torsion and Bauschinger tests on Ti6AI4V. In: Chandra T, Ionescu M, Mantovani D, editors. MATERIALS SCIENCE FORUM. Switzerland: Materials Science Forum; 2012. p. 774–9.
MLA
Peirs, Jan, Patricia Verleysen, Kim Verbeken, et al. “High Strain Rate Torsion and Bauschinger Tests on Ti6AI4V.” Materials Science Forum. Ed. T Chandra, M Ionescu , & D Mantovani. Vol. 706–709. Switzerland: Materials Science Forum, 2012. 774–779. Print.