File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Modeling and testing of PZT and PVDF piezoelectric wafer active sensors

TitleModeling and testing of PZT and PVDF piezoelectric wafer active sensors
Authors
KeywordsApproximation Theory
Electronic Equipment Testing
Materials Science
Patient Monitoring
Sensors
Strain Gages
Transceivers
Wave Energy Conversion
Wave Transmission
Issue Date2006
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/sms
Citation
Smart Materials and Structures, 2006, v. 15 n. 4, p. 1085-1093 How to Cite?
AbstractPiezoelectric wafer active sensors (PWAS) used in structural health monitoring (SHM) applications are able to detect structural damage using Lamb waves. PWAS are small, lightweight, unobtrusive and inexpensive. They achieve direct transduction between electric and elastic wave energies. PWAS are charge mode sensors and can be used as both transmitters and receivers. The focus of this paper is to find a suitable in situ piezoelectric active sensor for sending and receiving Lamb waves to be used in the SHM of structures with a curved surface. Current SHM technology uses brittle piezoceramic (PZT) wafer active sensors. Since piezoceramics are brittle, this approach could only be used on flat surfaces. The motivation of our research was to explore the use of flexible piezoelectric materials, e.g.piezoelastic polymers such as PVDF. However, PVDF stiffness is orders of magnitude lower than the PZT stiffness, and hence PVDF Lamb wave transmitters are much weaker than PZT transmitters. Thus, our research proceeded in two main directions: (a)to model and understand how piezoelectric material properties affect the behaviour of piezoelectric wafer active sensors; and (b)to perform experiments to test the capabilities of the flexible PVDF PWAS in comparison with those of stiffer but brittle PZT PWAS. We have shown that, with appropriate signal amplification, PVDF PWAS can perform the same Lamb wave transmission and reception functions currently performed by PZT PWAS. The experimental results of PZT-PWAS and PVDF-PWAS have been compared with a conventional strain gauge. The theoretical and experimental results in this study gave a basic demonstration of the piezoelectricity of PZT-PWAS and PVDF-PWAS. © 2006 IOP Publishing Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/90767
ISSN
2015 Impact Factor: 2.769
2015 SCImago Journal Rankings: 1.171
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLin, Ben_HK
dc.contributor.authorGiurgiutiu, Ven_HK
dc.date.accessioned2010-09-17T10:08:04Z-
dc.date.available2010-09-17T10:08:04Z-
dc.date.issued2006en_HK
dc.identifier.citationSmart Materials and Structures, 2006, v. 15 n. 4, p. 1085-1093en_HK
dc.identifier.issn0964-1726en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90767-
dc.description.abstractPiezoelectric wafer active sensors (PWAS) used in structural health monitoring (SHM) applications are able to detect structural damage using Lamb waves. PWAS are small, lightweight, unobtrusive and inexpensive. They achieve direct transduction between electric and elastic wave energies. PWAS are charge mode sensors and can be used as both transmitters and receivers. The focus of this paper is to find a suitable in situ piezoelectric active sensor for sending and receiving Lamb waves to be used in the SHM of structures with a curved surface. Current SHM technology uses brittle piezoceramic (PZT) wafer active sensors. Since piezoceramics are brittle, this approach could only be used on flat surfaces. The motivation of our research was to explore the use of flexible piezoelectric materials, e.g.piezoelastic polymers such as PVDF. However, PVDF stiffness is orders of magnitude lower than the PZT stiffness, and hence PVDF Lamb wave transmitters are much weaker than PZT transmitters. Thus, our research proceeded in two main directions: (a)to model and understand how piezoelectric material properties affect the behaviour of piezoelectric wafer active sensors; and (b)to perform experiments to test the capabilities of the flexible PVDF PWAS in comparison with those of stiffer but brittle PZT PWAS. We have shown that, with appropriate signal amplification, PVDF PWAS can perform the same Lamb wave transmission and reception functions currently performed by PZT PWAS. The experimental results of PZT-PWAS and PVDF-PWAS have been compared with a conventional strain gauge. The theoretical and experimental results in this study gave a basic demonstration of the piezoelectricity of PZT-PWAS and PVDF-PWAS. © 2006 IOP Publishing Ltd.en_HK
dc.languageengen_HK
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/smsen_HK
dc.relation.ispartofSmart Materials and Structuresen_HK
dc.subjectApproximation Theoryen_HK
dc.subjectElectronic Equipment Testingen_HK
dc.subjectMaterials Scienceen_HK
dc.subjectPatient Monitoringen_HK
dc.subjectSensorsen_HK
dc.subjectStrain Gagesen_HK
dc.subjectTransceiversen_HK
dc.subjectWave Energy Conversionen_HK
dc.subjectWave Transmissionen_HK
dc.titleModeling and testing of PZT and PVDF piezoelectric wafer active sensorsen_HK
dc.typeArticleen_HK
dc.identifier.emailLin, B:blin@hku.hken_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1088/0964-1726/15/4/022en_HK
dc.identifier.scopuseid_2-s2.0-33746310584en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33746310584&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume15en_HK
dc.identifier.issue4en_HK
dc.identifier.spage1085en_HK
dc.identifier.epage1093en_HK
dc.identifier.eissn1361-665X-
dc.identifier.isiWOS:000239658200022-
dc.identifier.citeulike760936-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats