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Characterization of mode selective actuator and sensor systems for Lamb wave excitation

Schmidt, Daniel and Heinze, Christoph and Hillger, Wolfgang and Sinapius, Michael and Wierach, Peter (2012) Characterization of mode selective actuator and sensor systems for Lamb wave excitation. In: SPIE Smart Structures/NDE. SPIE Smart Structures/NDE, 11.-15. Mär. 2012, San Diego, USA.

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Abstract

Structural Health Monitoring (SHM) based on Lamb waves, a type of ultrasonic guided waves, is a promising technique for in-service inspection of composite structures. This study presents the development of mode selective actuator and sensor systems based on interdigital transducer (IDT) design. Various parameters such as wavelengths, number and apodization of electrodes as well as eigenfrequencies of the transducer are characterized. Therefore, an analytical model based on the theory of surface acoustic wave (SAW) filters is investigated in order to evaluate the acoustic response of the transducer. Furthermore, experimental tests on composite plates are performed.

Item URL in elib:https://elib.dlr.de/91139/
Document Type:Conference or Workshop Item (Speech)
Title:Characterization of mode selective actuator and sensor systems for Lamb wave excitation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schmidt, DanielDLR-FAUNSPECIFIED
Heinze, ChristophChristoph.Heinze (at) dlr.deUNSPECIFIED
Hillger, WolfgangDLR-FAUNSPECIFIED
Sinapius, MichaelDLR FAUNSPECIFIED
Wierach, PeterFA-MFWUNSPECIFIED
Date:1 March 2012
Journal or Publication Title:SPIE Smart Structures/NDE
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Structural Health Monitoring (SHM), Lamb waves, interdigital transducer, mode selective actuators and sensors, CFRP plates
Event Title:SPIE Smart Structures/NDE
Event Location:San Diego, USA
Event Type:international Conference
Event Dates:11.-15. Mär. 2012
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 - Structures and Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Schmidt, Daniel
Deposited On:15 Dec 2014 08:22
Last Modified:15 Dec 2014 08:22

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