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Experimental structure intensity analysis of an Airbus A400M fuselage structure using high-resolution vibration measurements

Winter, Rene and Heyen, Simon and Biedermann, Jörn (2019) Experimental structure intensity analysis of an Airbus A400M fuselage structure using high-resolution vibration measurements. ICA 2019 - 23rd International Congress on Acoustics, 09.-13. Sep. 2019, Aachen, Deutschland. ISBN 978-3-939296-15-7. ISSN 2226-7808 and 2415-1599.

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Official URL: http://pub.dega-akustik.de/ICA2019/data/articles/000319.pdf

Abstract

An ongoing challenge in the analysis of aircraft cabin vibrations in the mid-frequency range is the analysis of transfer paths through the complex fuselage structure. Knowing these paths would allow for simpler and more cost efficient counter measures to harmonic noise sources like engines or the auxiliary power unit. The A400M-MSN5 fuselage structure located at the University of the Federal Armed Forces in Hamburg (HSU) is a production line A400M fuselage repurposed as a test facility for experimental studies allowing for full scale tests of novel experimental methods for acoustics and structure-born noise. In this paper, the results of the deployment of a fully automated and autonomous Laser-Doppler-Vibrometer scanner used to measure the structure vibration above the cabin floor at a high spatial resolution are presented. A total of more than 17000 individual measurement positions spaced approximately 9 cm apart was measured, using both a loudspeaker system and a shaker as an excitation source. Utilizing the measured high resolution deflection shapes energy transfer paths were calculated using a hybrid Numerical-Experimental approach to structural intensity analysis.

Item URL in elib:https://elib.dlr.de/130131/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental structure intensity analysis of an Airbus A400M fuselage structure using high-resolution vibration measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Winter, Renerene.Winter (at) dlr.dehttps://orcid.org/0000-0003-2115-4001
Heyen, Simonsimon.heyen (at) dlr.deUNSPECIFIED
Biedermann, Jörnjoern.biedermann (at) dlr.deUNSPECIFIED
Date:9 September 2019
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 8118-8125
Series Name:Proceedings of the 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019
ISSN:2226-7808 and 2415-1599
ISBN:978-3-939296-15-7
Status:Published
Keywords:structure intensity analysis, vibration measurement, Laser-Doppler-Vibrometer
Event Title:ICA 2019 - 23rd International Congress on Acoustics
Event Location:Aachen, Deutschland
Event Type:international Conference
Event Dates:09.-13. Sep. 2019
Organizer:Deutsche Gesellschaft für Akustik e.V. (DEGA)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Winter, Rene
Deposited On:23 Dec 2019 15:38
Last Modified:23 Dec 2019 15:38

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