Identification of the dynamic properties of Al 5456 FSW welds using the virtual fields method
Identification of the dynamic properties of Al 5456 FSW welds using the virtual fields method
The present study focuses on the identification of the evolution of the dynamic elasto-plastic properties of Al 5456 FSW welds. An innovative method is proposed to make best use of the data collected with full-field measurements during dynamic experiments, and achieve identification of the mechanical properties of heterogeneous materials without requiring measurement of the load. Compressive specimens have been submitted to high strain-rate loading through a split Hopkinson pressure bar device while displacement fields were obtained using full-field measurement techniques. Two sets of experiments have been performed using two different methods: the grid method and digital image correlation. Afterwards, the identification of the elastic and plastic properties of the material was carried out using the Virtual Fields Method. Finally, identification of the evolution of the yield stress throughout the weld has been achieved for strain-rates of the order of 103 s?1.
friction stir welding, virtual fields method, dynamic deformation, digital image correlation, grid method, split Hopkinson pressure bar
176-190
Le Louëdec, G.
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Pierron, F.
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Sutton, M.A.
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Siviour, C.
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Reynolds, A.P.
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24 March 2015
Le Louëdec, G.
e1541285-0fb3-4ce8-963c-5ca0e2579314
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Sutton, M.A.
9683ede4-2649-4e2f-bdf1-cd746a0ecfc5
Siviour, C.
4d607d0d-b85e-423f-95e4-f35bb73eb4bd
Reynolds, A.P.
bab44580-e866-4e02-8efd-fec5db664a97
Le Louëdec, G., Pierron, F., Sutton, M.A., Siviour, C. and Reynolds, A.P.
(2015)
Identification of the dynamic properties of Al 5456 FSW welds using the virtual fields method.
Journal of Dynamic Behavior of Materials, 1 (2), .
(doi:10.1007/s40870-015-0014-6).
Abstract
The present study focuses on the identification of the evolution of the dynamic elasto-plastic properties of Al 5456 FSW welds. An innovative method is proposed to make best use of the data collected with full-field measurements during dynamic experiments, and achieve identification of the mechanical properties of heterogeneous materials without requiring measurement of the load. Compressive specimens have been submitted to high strain-rate loading through a split Hopkinson pressure bar device while displacement fields were obtained using full-field measurement techniques. Two sets of experiments have been performed using two different methods: the grid method and digital image correlation. Afterwards, the identification of the elastic and plastic properties of the material was carried out using the Virtual Fields Method. Finally, identification of the evolution of the yield stress throughout the weld has been achieved for strain-rates of the order of 103 s?1.
Text
Paper_weld_dynamic_jdbm_revised.pdf
- Author's Original
More information
Accepted/In Press date: 16 March 2015
Published date: 24 March 2015
Keywords:
friction stir welding, virtual fields method, dynamic deformation, digital image correlation, grid method, split Hopkinson pressure bar
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 378153
URI: http://eprints.soton.ac.uk/id/eprint/378153
ISSN: 2199-7446
PURE UUID: 3e6b82be-90dc-424b-bae1-c39ebef78461
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Date deposited: 29 Jun 2015 10:22
Last modified: 15 Mar 2024 03:35
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Contributors
Author:
G. Le Louëdec
Author:
M.A. Sutton
Author:
C. Siviour
Author:
A.P. Reynolds
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