Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81061
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dc.contributor.authorHuan, Qen_US
dc.contributor.authorChen, Men_US
dc.contributor.authorSu, Zen_US
dc.contributor.authorLi, Fen_US
dc.date.accessioned2019-07-22T01:56:32Z-
dc.date.available2019-07-22T01:56:32Z-
dc.date.issued2019-
dc.identifier.citationUltrasonics, 2019, v. 97, p.29-37en_US
dc.identifier.issn0041-624X-
dc.identifier.urihttp://hdl.handle.net/10397/81061-
dc.description.abstractGuided wave based structural health monitoring (SHM) has been regarded as an effective tool to detect the early damage in large structures and thus avoid possible catastrophic failure. In recent years, Lamb wave phased array SHM technology had been intensively investigated while the inherent multi-mode and dispersive characteristic of Lamb waves limits its further applications. In comparison, the fundamental shear horizontal (SH 0 ) wave is non-dispersive with uncoupled displacements and thus more promising for defect detection. In this work, we proposed an SH 0 wave linear phased array SHM system based on our recently proposed omni-directional SH wave piezoelectric transducer (OSH-PT). Firstly, the working principle of the phased array system was presented and the total focusing method (TFM) was employed for imaging. Then the SH 0 wave mode generated by the OSH-PT was confirmed in a defect-free plate. Finally, experiments were carried out to examine the performances of this SHM system. Results showed that the proposed system can detect a through-thickness hole as small as 2 mm in diameter with the location error only about 6.3 mm. Moreover, the proposed phased array system can also detect multi-defects. Due to its low working frequency and thus low attenuation, the proposed phased array system is capable of monitoring large structures. This work will lay the foundations of SH wave based phased array SHM.en_US
dc.description.sponsorshipDepartment of Mechanical Engineeringen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofUltrasonicsen_US
dc.subjectGuided waveen_US
dc.subjectPhased arrayen_US
dc.subjectPiezoelectric transduceren_US
dc.subjectShear horizontal waveen_US
dc.subjectStructural health monitoringen_US
dc.titleA high-resolution structural health monitoring system based on SH wave piezoelectric transducers phased arrayen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage29-
dc.identifier.epage37-
dc.identifier.volume97-
dc.identifier.doi10.1016/j.ultras.2019.04.005-
dc.identifier.scopus2-s2.0-85065065683-
dc.identifier.pmid31071504-
dc.identifier.eissn1874-9968-
dc.description.ros2018002868-
dc.description.validate201907 bcwh-
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