An Experimental Comparison of Laser Interferometer Methods for Accurate Determination of Resonant Frequencies in a Turbine Wheel Assembly

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F14%3APU110124" target="_blank" >RIV/00216305:26620/14:PU110124 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

An Experimental Comparison of Laser Interferometer Methods for Accurate Determination of Resonant Frequencies in a Turbine Wheel Assembly

Original language description

This paper presents experimental research on a turbine wheel assembly used in car engines. The aim the paper is to investigate various procedures ensuring optimal search of resonant frequencies related to mechanical excitation and measuring methods. To perform the mechanical excitation described in the article, we used a vibration shaker and a modal hammer. In the given context, two measurement approaches are compared: the application of a single-point vibrometer, and the use of a special differential vibrometer. The purpose of the research is to facilitate reliable diagnostics of resonant frequencies in turbine blades, which is a process markedly responsible for the correct balancing of a turbine wheel. Such accurate determination of the resonant frequencies of a turbine wheel influences the life of the turbocharger and, moreover, enables us to eliminate possible damage to an automotive engine caused by vibrations. All the indicated measurements are mutually compared, and another comparison is performed involving the simulation results obtained from the modal analysis. The experiments demonstrate the advantages, disadvantages and differences characterising the different types of excitation and laser interferometer measurement, with a special focus on the streamlining and acceleration of experimental measurements in the development of new turbine wheels.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 21st International Congress on Sound and Vibration

ISBN

978-83-62652-66-2

ISSN

2329-3675

e-ISSN

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Number of pages

8

Pages from-to

1-8

Publisher name

International Institute of Acoustic and Vibration

Place of publication

Peking

Event location

Peking

Event date

Jul 13, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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