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Check of Piezoelectric Transducers Using the Electro-Mechanical Impedance

Büthe, Inka and Moix-Bonet, Maria and Wierach, Peter and Fritzen, Klaus-Peter (2014) Check of Piezoelectric Transducers Using the Electro-Mechanical Impedance. In: ndt.net. 7th European Workshop on Structural Health Monitoring, 02.-04. July 2014, La Cité, Nantes, France.

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The use of piezoelectric wafer active sensors in structural health monitoring systems implies the necessity to check these components for their functionality, especially when the sensors are em-bedded in the structure. This paper introduces two novel approaches based on electro-mechanical impedance measurements and compares them with a traditional approach based on the slope of the susceptance spectrum. The change of the resistance spectrum as well as the change of the correlation of susceptance spectra is established as damage indicator. In an experimental setup the mechanical durability of a piezoelectric patch transducer, directly embedded in the structure, was tested. It has been shown that this application of load causes partial sensor breakage, which, for this particular type of PWAS, can hardly be detected with the help of the susceptance slope. The good feasibility especially of the proposed damage indicator, based on correlation within the susceptance spectrum, is demonstrated.

Item URL in elib:https://elib.dlr.de/103384/
Document Type:Conference or Workshop Item (Speech)
Title:Check of Piezoelectric Transducers Using the Electro-Mechanical Impedance
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Büthe, InkaUniversity of SiegenUNSPECIFIED
Fritzen, Klaus-PeterUniversity of SiegenUNSPECIFIED
Date:July 2014
Journal or Publication Title:ndt.net
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Piezoelectric sensors, Reliability, Signal processing
Event Title:7th European Workshop on Structural Health Monitoring
Event Location:La Cité, Nantes, France
Event Type:Workshop
Event Dates:02.-04. July 2014
Organizer:EWSHM 2014 local organizing committee
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: Moix-Bonet, Maria
Deposited On:15 Aug 2016 08:15
Last Modified:20 Jun 2021 15:47

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