Monica Castro-Palacios
A dual material removal mechanism for clearing of obstructed holes via electrical discharge machining
Castro-Palacios, Monica; Ahmed, Shamraze; Ahmed, Nuhaize; Murray, James W.; Speidel, Alistair; Duffin, Jason; Kell, James; Clare, Adam T.
Authors
Shamraze Ahmed
Nuhaize Ahmed
James W. Murray
ALISTAIR SPEIDEL ALISTAIR.SPEIDEL@NOTTINGHAM.AC.UK
Assistant Professor in Sustainableengineering
Jason Duffin
James Kell
ADAM CLARE adam.clare@nottingham.ac.uk
Professor of Manufacturing Engineering
Abstract
Cooling hole blockages in gas turbine blades can occur during operation, detrimentally reducing performance and resulting in premature removal from service. Here, electrical discharge machining (EDM) is used to unblock fine holes, which have been obstructed with a mixture of both conductive and non-conductive contaminants representative of post-service condition. This work demonstrates EDM is a viable process to unblock fine holes containing material which is partially non-conductive. The mechanism results from a combination of conventional EDM discharges and mechanical spalling, resulting in a dual removal process. This method allows accurate and repeatable hole clearance in a conventional EDM hole-drilling setup.
Citation
Castro-Palacios, M., Ahmed, S., Ahmed, N., Murray, J. W., Speidel, A., Duffin, J., …Clare, A. T. (2022). A dual material removal mechanism for clearing of obstructed holes via electrical discharge machining. Manufacturing Letters, 31, 10-14. https://doi.org/10.1016/j.mfglet.2021.12.003
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 9, 2021 |
Online Publication Date | Dec 21, 2021 |
Publication Date | 2022-01 |
Deposit Date | May 15, 2023 |
Journal | Manufacturing Letters |
Print ISSN | 2213-8463 |
Peer Reviewed | Peer Reviewed |
Volume | 31 |
Pages | 10-14 |
DOI | https://doi.org/10.1016/j.mfglet.2021.12.003 |
Keywords | Industrial and Manufacturing Engineering; Mechanics of Materials |
Public URL | https://nottingham-repository.worktribe.com/output/18528927 |
Publisher URL | https://www.sciencedirect.com/science/article/abs/pii/S2213846321000869?via%3Dihub |
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