Experimental Modal Analysis of a Turbine Blade Using Scanning Laser Doppler Vibrometry in Combination with Air-Coupled Impulse Acoustic Excitation; Russian Journal of Nondestructive Testing; Vol. 62, iss. 2

Experimental Modal Analysis of a Turbine Blade Using Scanning Laser Doppler Vibrometry in Combination with Air-Coupled Impulse Acoustic Excitation; Russian Journal of Nondestructive Testing; Vol. 62, iss. 2

Sonraí bibleagrafaíochta
Parent link:	Russian Journal of Nondestructive Testing=Дефектоскопия.— .— New York: Pleiades Publishing, Ltd. Vol. 62, iss. 2.— 2026.— P. 145-155
Príomhchruthaitheoir:	Derusova D. A. Dariya Aleksandrovna
Údar corparáideach:	Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности
Rannpháirtithe:	Nekhoroshev V. O. Vitaly Olegovich, Shpilnoy V. Yu. Viktor Yurjevich
Achoimre:	Title screen A comparative analysis of contact and air-coupled approaches to acoustic excitation of a turbine blade was carried out using scanning laser Doppler vibrometry. The objective was to identify the natural frequencies and mode shapes of the blade. When contact excitation was applied using an electrodynamic shaker, modal analysis revealed eight vibration modes of the blade in the frequency range from 100 Hz to 9.5 kHz. Air-coupled acoustic excitation was implemented using a pulsed gas-discharge electroacoustic transducer operating based on a spark discharge in air at atmospheric pressure. It is shown that the gas-discharge electroacoustic transducer enables excitation of more than 30 vibration modes in the frequency range from 100 Hz to 38.5 kHz. When the air-coupled transducer was positioned 40 mm away from the blade, the vibration velocity amplitude on its surface reached 30 μm/s. Thus, the experiment confirms the feasibility of performing experimental modal analysis of a metallic part using air-coupled excitation and noncontact vibration measurement techniques Текстовый файл AM_Agreement
Teanga:	Béarla
Foilsithe / Cruthaithe:	2026
Ábhair:	nondestructive testing vibration modal analysis laser Doppler vibrometry turbine blades acoustics spark discharge ultrasound труды учёных ТПУ электронный ресурс
Rochtain ar líne:	https://doi.org/10.1134/S1061830926600395 Статья на русском языке
Formáid:	Leictreonach Caibidil leabhair
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=688733

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