Detail publikace
Measuring Device for More Precise Mistuning Identification of Integrated Bladed Discs
KUČERA, O. PÍŠTĚK, V. FOMIN, O. KUČERA, P. SAGIN, S.
Originální název
Measuring Device for More Precise Mistuning Identification of Integrated Bladed Discs
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
In integrated turbine wheel designs, small deviations, known as mistuning, often occur in the modal properties of individual blades due to manufacturing tolerances and material inhomogeneity. During operation, this mistuning can cause some rotor blades to be subjected to significantly higher loads than predicted for an ideal rotor. The degree of rotor mistuning can only be determined using methods of experimental modal analysis. However, the manual use of the modal hammer cannot ensure precise repeatability of the force impulse’s location and timing, leading to inaccuracies. This article introduces a mechanism that replaces manual modal hammer operations, guaranteeing consistent impact location and timing while eliminating double strikes. The device was verified on bladed discs of various sizes, and its usability is demonstrated in this article on a turbine wheel of a marine engine turbocharger. The developed mechanism automates modal hammer strikes, ensuring precisely repeatable force courses and positioning for each impact. This automation reduces the measurement time and significantly improves the accuracy. The results of this research showed that even with careful manual operation of the modal hammer by an experienced operator, statistically significant differences arise in the repeated measurements of a bladed disc mistuning, whereas with the use of the presented measuring device, the results of the repeated measurements are practically identical.
Klíčová slova
bladed disc; mistuning; measuring device; turbocharger; marine engine
Autoři
KUČERA, O.; PÍŠTĚK, V.; FOMIN, O.; KUČERA, P.; SAGIN, S.
Vydáno
7. 5. 2025
Nakladatel
MDPI
ISSN
2073-8994
Periodikum
Symmetry
Ročník
17
Číslo
5
Stát
Švýcarská konfederace
Strany od
1
Strany do
15
Strany počet
15
URL
Plný text v Digitální knihovně
BibTex
@article{BUT197883,
author="Ondřej {Kučera} and Václav {Píštěk} and Oleksij {Fomin} and Pavel {Kučera} and Sergii {Sagin}",
title="Measuring Device for More Precise Mistuning Identification of Integrated Bladed Discs",
journal="Symmetry",
year="2025",
volume="17",
number="5",
pages="1--15",
doi="10.3390/sym17050717",
issn="2073-8994",
url="https://www.mdpi.com/2073-8994/17/5/717"
}