Zhengkai Xu
Defect evolution in laser powder bed fusion additive manufactured components during thermo-mechanical testing
Xu, Zhengkai; Hyde, Christopher J.; Thompson, Adam; Leach, Richard K.; Maskery, Ian; Tuck, Christopher; Clare, Adam T.
Authors
Dr CHRISTOPHER HYDE Christopher.Hyde@nottingham.ac.uk
Associate Professor
Dr ADAM THOMPSON ADAM.THOMPSON@NOTTINGHAM.AC.UK
Assistant Professor
RICHARD LEACH RICHARD.LEACH@NOTTINGHAM.AC.UK
Chair in Metrology
Dr IAN MASKERY IAN.MASKERY@NOTTINGHAM.AC.UK
Assistant Professor
CHRISTOPHER TUCK CHRISTOPHER.TUCK@NOTTINGHAM.AC.UK
Professor of Materials Engineering
ADAM CLARE adam.clare@nottingham.ac.uk
Professor of Manufacturing Engineering
Abstract
The mechanical performance of additively manufactured (AM) components remains an issue, limiting the implementation of AM technologies. In this work, a new method is presented, to examine the evolution of defects in an Inconel 718 two-bar test specimen, manufactured by laser powder bed fusion AM, during thermo-mechanical testing. The test was interrupted at specific extensions of the specimen, and X-ray computed tomography measurements performed. This methodology has allowed, for the first time, the evolution of the defects in an AM specimen to be studied during a thermo-mechanical test. The number and size of the defects were found to increase with time as a result of the thermo-mechanical test conditions, and the location and evolution of these defects have been tracked. Defect tracking potentially allows for accurate prediction of failure positions, at the earliest possible stage of a thermo-mechanical test. Ultimately, when the ability to locate defects in this manner is coupled with manipulation of build parameters, laser powder bed fusion practitioners will be able to further optimise the manufacturing procedure in order to produce components of a higher structural integrity.
Citation
Xu, Z., Hyde, C. J., Thompson, A., Leach, R. K., Maskery, I., Tuck, C., & Clare, A. T. (2017). Defect evolution in laser powder bed fusion additive manufactured components during thermo-mechanical testing.
Conference Name | Joint Special Interest Group meeting between euspen and ASPE Dimensional Accuracy and Surface Finish in Additive Manufacturing |
---|---|
End Date | Oct 12, 2017 |
Acceptance Date | Oct 2, 2017 |
Publication Date | Oct 10, 2017 |
Deposit Date | Dec 7, 2017 |
Publicly Available Date | Mar 28, 2024 |
Peer Reviewed | Peer Reviewed |
Public URL | https://nottingham-repository.worktribe.com/output/887470 |
Files
Defect evolution in laser powder bed fusion additive manufactured components during thermo-mechanical testing.pdf
(947 Kb)
PDF
Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
You might also like
Stochastic design for additive manufacture of true biomimetic populations
(2022)
Journal Article
On the thermomechanical aging of LPBF alloy 718
(2022)
Journal Article
Downloadable Citations
About Repository@Nottingham
Administrator e-mail: digital-library-support@nottingham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search