Image-based inertial impact test for characterisation of strain rate dependency of Ti6Al4V titanium alloy
Image-based inertial impact test for characterisation of strain rate dependency of Ti6Al4V titanium alloy
In the present work Image-Based Inertial Impact (IBII) tests are performed on Ti6Al4V material. The IBII test uses an impact on the edge of the specimen to generate a short pulse that loads the specimen. Three specimen geometries have been tested: a classic rectangular specimen, and two specimen geometries with stress concentrating geometries (i.e. a hole and notches) to enhance high levels of plastic strain. Full-field measurement of the acceleration and strain are successfully used in combination with the Virtual Fields Method (VFM) to identify the strain rate sensitivity parameter of the Johnson-Cook model. The strain/strain rate spectra covered by each specimen are analysed. Finally, the influence of the virtual field used in the identification process is discussed as well as the simultaneous identification of the Johnson-Cook model strain rate sensitivity parameter and the strain rate threshold parameter.
Ti6Al4V, image-based, inertial impact test, strain rate, titanium alloys
235-248
Fourest, T.
99027376-c174-47fa-88e3-10cf20e8b514
Bouda, P.
1027e51c-52a6-4312-a4bb-d8a51355eda1
Fletcher, L.C.
48dca64b-f93c-4655-9205-eaf4e74be90c
Notta-cuvier, D.
7fedc6e2-6e8f-4b95-9f4c-f05b7e88422f
Markiewicz, E.
4613516d-05ba-4e06-91c9-fceefa05ac88
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Langrand, B.
37329eaa-5ae4-4464-b0d4-6261882804e2
1 February 2020
Fourest, T.
99027376-c174-47fa-88e3-10cf20e8b514
Bouda, P.
1027e51c-52a6-4312-a4bb-d8a51355eda1
Fletcher, L.C.
48dca64b-f93c-4655-9205-eaf4e74be90c
Notta-cuvier, D.
7fedc6e2-6e8f-4b95-9f4c-f05b7e88422f
Markiewicz, E.
4613516d-05ba-4e06-91c9-fceefa05ac88
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Langrand, B.
37329eaa-5ae4-4464-b0d4-6261882804e2
Fourest, T., Bouda, P., Fletcher, L.C., Notta-cuvier, D., Markiewicz, E., Pierron, F. and Langrand, B.
(2020)
Image-based inertial impact test for characterisation of strain rate dependency of Ti6Al4V titanium alloy.
Experimental Mechanics, 60 (2), .
(doi:10.1007/s11340-019-00559-3).
Abstract
In the present work Image-Based Inertial Impact (IBII) tests are performed on Ti6Al4V material. The IBII test uses an impact on the edge of the specimen to generate a short pulse that loads the specimen. Three specimen geometries have been tested: a classic rectangular specimen, and two specimen geometries with stress concentrating geometries (i.e. a hole and notches) to enhance high levels of plastic strain. Full-field measurement of the acceleration and strain are successfully used in combination with the Virtual Fields Method (VFM) to identify the strain rate sensitivity parameter of the Johnson-Cook model. The strain/strain rate spectra covered by each specimen are analysed. Finally, the influence of the virtual field used in the identification process is discussed as well as the simultaneous identification of the Johnson-Cook model strain rate sensitivity parameter and the strain rate threshold parameter.
Text
Post print DAP DMAS19065
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More information
Accepted/In Press date: 9 October 2019
e-pub ahead of print date: 26 November 2019
Published date: 1 February 2020
Additional Information:
Funding Information:
The authors are grateful to Onera and the Région Hauts-de-France for cofunding this project. Prof. Pierron acknowledges support by EPSRC through grant EP/L026910/1. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Publisher Copyright:
© 2019, Society for Experimental Mechanics.
Keywords:
Ti6Al4V, image-based, inertial impact test, strain rate, titanium alloys
Identifiers
Local EPrints ID: 437438
URI: http://eprints.soton.ac.uk/id/eprint/437438
ISSN: 0014-4851
PURE UUID: d3c63567-4726-4b33-8ea5-9d83ac544959
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Date deposited: 30 Jan 2020 17:37
Last modified: 17 Mar 2024 05:17
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Contributors
Author:
T. Fourest
Author:
P. Bouda
Author:
D. Notta-cuvier
Author:
E. Markiewicz
Author:
B. Langrand
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