The University of Southampton
University of Southampton Institutional Repository

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


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

PDF Robust_design_of_turbine_blades_against_manufacturing_variability.pdf - Version of Record
Restricted to Repository staff only
Download (742kB)

More information

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


Local EPrints ID: 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

Export record



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

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.