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Robust design of turbine blades against manufacturing variability

Thakur, Nikita, Keane, A.J. and Nair, P.B. (2011) Robust design of turbine blades against manufacturing variability International Journal of Reliability and Safety, 5, (3/4), pp. 420-436. (doi:10.1504/IJRS.2011.041188).

Record type: Article

Abstract

Turbine blade life is central to the integrity of the aircraft engine. Manufacturing variability may lead to variations in the expected life and performance of turbine blades. It becomes important therefore to understand these variations and seek new designs that are robust to manufacturing variability. The present work proposes a methodology that employs Free Form Deformation in conjunction with optimisation to generate realistic 3D representations of the manufactured blades using limited measurements available per blade. Lifing estimations on the perturbed geometries show a reduction of around 1.7% in mean life relative to the designed life with a maximum relative reduction of around 3.7%. Following this, the proposed methodology is employed for robust design studies resulting in a better turbine blade design. This design indicates an improvement of around 2% in the designed life, around 3% improvement in mean life and approximately 57% reduction in blade life variability as compared to the current turbine blade design

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More information

Published date: 1 June 2011
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 204257
URI: http://eprints.soton.ac.uk/id/eprint/204257
ISSN: 1479-389X
PURE UUID: 8943cbe3-0f31-482d-b5ba-a022ba90ff33

Catalogue record

Date deposited: 25 Nov 2011 14:32
Last modified: 18 Jul 2017 11:06

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Contributors

Author: Nikita Thakur
Author: A.J. Keane
Author: P.B. Nair

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