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Evaluation of experimental forced response data of a turbine stage with respect to different stator blade damages

Rajput, Moeen Ud Din Saeed (2013) Evaluation of experimental forced response data of a turbine stage with respect to different stator blade damages. DLR-Interner Bericht. DLR IB 232-2013 J 07, 68 S.

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Abstract

This thesis work is based on the evaluation of experimental forced response data of a turbine stage with respect to different excitation sources. Six stator blade configurations are considered with three types of damage blades, i.e. triangular, rectangular and quadrilateral damages arranged at different positions around the circumference of the stator ring. Post processing routines are developed to evaluate the forced response data of all the sensors attached to the rotor disk for all configurations and at different stator positions. Methods for averaging of the pressure data have been proposed. Unsteady pressure distribution around blade surface is computed using the forced response from each sensor mounted on the blade. Important task is to verify the principle of superposition for configuration 05 and 06 by taking into account the single damage pattern from configurations 02-04. This principle has been verified in this thesis. A method has been proposed for the scaling of the unsteady pressure distribution for different damage sizes of same type based on some size parameter, i.e. area. Relationship between different parameters is investigated, based on which forced response for any size of damage blade can be deduced. Finally, the thesis concludes with a detail sensitivity study and discussion of the results together with proposed future work.

Item URL in elib:https://elib.dlr.de/83784/
Document Type:Monograph (DLR-Interner Bericht)
Title:Evaluation of experimental forced response data of a turbine stage with respect to different stator blade damages
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rajput, Moeen Ud Din SaeedUNSPECIFIEDUNSPECIFIED
Date:2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:68
Status:Published
Keywords:turbine stage, blade damage, experimental investigation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Belz, Joachim
Deposited On:15 Aug 2013 11:04
Last Modified:15 Aug 2013 11:04

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