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The use of strain sensors for modal identification of aeroelastic structures

Govers, Yves and Jelicic, G. and Akbay, Taner (2016) The use of strain sensors for modal identification of aeroelastic structures. ISMA 2016 - International Conference on Noise and Vibration Engineering, 19.-21. Sept. 2016, Leuven, Belgien.

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Abstract

Acceleration measurements are most commonly employed to determine mode shapes by modal identification. There are two simple reasons for this: an acceleration sensor is easy to apply and deflection mode shapes can directly be estimated from acceleration signals by experimental or operational modal analysis techniques. In the past strain gauges have played a minor role in modal identification because they were of single use and more difficult to apply. Another drawback is that strain modes need to be converted into deflection modes. Nevertheless there are applications where strain measurements show better performance than acceleration measurements if rotating structures are considered. Recent progress in strain measurement technology with fiber optical strain sensors offering spatially nearly continuous measurements up to more than 100Hz of sampling rate raise the interest for aeroelastic applications. This study will analyze the use of strain sensors for aeroelastic applications.

Item URL in elib:https://elib.dlr.de/107712/
Document Type:Conference or Workshop Item (Speech)
Title:The use of strain sensors for modal identification of aeroelastic structures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Govers, YvesYves.Govers (at) dlr.deUNSPECIFIED
Jelicic, G.goran.jelicic (at) dlr.dehttps://orcid.org/0000-0001-5091-6699
Akbay, TanerTaner.Akbay (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 2207-2216
Status:Published
Keywords:strain sensors, modal identification, aeroelastic structures
Event Title:ISMA 2016 - International Conference on Noise and Vibration Engineering
Event Location:Leuven, Belgien
Event Type:international Conference
Event Dates:19.-21. Sept. 2016
Organizer:KU Leuven, Department of Mechanical Engineering, Division of Production Engineering, Machine Design and Automation (PMA)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Quiet und Comfortable Rotorcraft
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Grischke, Birgid
Deposited On:09 Dec 2016 09:26
Last Modified:13 Jun 2019 15:03

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