A parametric model for probabilistic analysis of turbine blades considering real geometric effects

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A parametric model for probabilistic analysis of turbine blades considering real geometric effects

Heinze, Kay / Meyer, Marcus / Scharfenstein, Jens / Voigt, Matthias / Vogeler, Konrad

Abstract This paper addresses the consideration of manufacturing effects of gas turbine blades in a probabilistic setting. Currently, during design these effects are covered by safety factors and conservative assumptions. The probabilistic investigation, on the other hand, will enable us to calculate the effect of variability on stresses and relevant aerodynamic quantities such as efficiency, thus providing the foundation for robust blade design. A set of 500 new and used turbine blades, provided by Rolls-Royce Deutschland, was digitised with an optical scan system. Cooling holes and abrasion effects were statistically analysed and removed from the scanned data set. Classical turbine parameters were identified. Finally, the variability (probability density functions and corresponding parameters) of the geometric parameters can be calculated according to the digitised geometries and the manufacturing process can be statistically analysed. The presented parametric model will provide the basis for upcoming numerical probabilistic assessment of the real geometric effects.

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Title :

A parametric model for probabilistic analysis of turbine blades considering real geometric effects

Contributors:

Heinze, Kay (author) / Meyer, Marcus (author) / Scharfenstein, Jens (author) / Voigt, Matthias (author) / Vogeler, Konrad (author)

Published in:

CEAS Aeronautical Journal ; 5 , 1

Publication date :

2013

ISSN :

1869-5582

DOI :

https://doi.org/10.1007/s13272-013-0088-6

Type of media :

Article (Journal)

Type of material :

Language :

English

Keywords :

Luftfahrttechnik , Raumfahrttechnik

Classification :

BKL:		50.03 Methoden und Techniken der Ingenieurwissenschaften / 50.03 Methoden und Techniken der Ingenieurwissenschaften, Methoden und Techniken der Ingenieurwissenschaften / 55.50 Luftfahrzeugtechnik / 55.50 Luftfahrzeugtechnik, Luftfahrzeugtechnik
DDC:		629.105

Heinze, Kay / Meyer, Marcus / Scharfenstein, Jens et al. | Springer Verlag | 2013

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Thakur, Nikita | Online Contents | 2010

AIAA-2001-1318 Probabilistic Modal Analysis for Turbine Engine Blades

Beachkofski, B. / Grandhi, R. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2001

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