Dual piezoelectric transducer based electromechanical impedance measurement for health monitoring of large structures대형 구조물의 건전성 모니터링을 위한 동심원형 이중 압전센서 기반의 기전 임피던스 계측

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dc.contributor.advisorSohn, Hoon-
dc.contributor.advisor손훈-
dc.contributor.authorSong, Ho-Min-
dc.contributor.author송호민-
dc.date.accessioned2015-04-23T08:49:13Z-
dc.date.available2015-04-23T08:49:13Z-
dc.date.issued2013-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=567263&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/197847-
dc.description학위논문(석사) - 한국과학기술원 : 건설및환경공학과, 2013.2, [ viii, 50 p. ]-
dc.description.abstractThis study presents an electromechanical (EM) impedance measurement technique using a dual piezoelectric transducer for continuous monitoring of large structures. The dual piezoelectric transducer, composed of two separate but concentric lead zirconate titanate (PZT) segments, can effectively measure the small response of the host structure, since it is not influenced by the excitation-induced PZT strain. The proposed EM impedance measure-ment technique shows high signal-to-noise ratio (SNR) and good repeatability from the measured impedance signals in massive structures. At the same time, the proposed technique allows low-cost and fast measurement of the impedance signatures. In this study, the dual PZT impedance measurement is formulated theoretically and verified numerically. Then, a series of experimental validation were carried out on a laboratory-size specimen and full-scale bridge and building structures. The experimental results show that the proposed technique successfully measures the EM impedance signals with high SNR and good repeatability from massive structures even in which the conventional techniques fail to do so.eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectDual piezoelectric transducer-
dc.subject높은 신호대 잡음비 및 반복률-
dc.subject분리된 가진과 측정-
dc.subject대형 구조물-
dc.subject기전 임피던스-
dc.subject이중 압전센서-
dc.subjectElectromechanical impedance-
dc.subjectLarge structures-
dc.subjectSeparate excitation and sensing-
dc.subjectHigh signal-to-noise ratio-
dc.subjectGood repeatability-
dc.titleDual piezoelectric transducer based electromechanical impedance measurement for health monitoring of large structures-
dc.title.alternative대형 구조물의 건전성 모니터링을 위한 동심원형 이중 압전센서 기반의 기전 임피던스 계측-
dc.typeThesis(Master)-
dc.identifier.CNRN567263/325007 -
dc.description.department한국과학기술원 : 건설및환경공학과, -
dc.identifier.uid020113313-
dc.contributor.localauthorSohn, Hoon-
dc.contributor.localauthor손훈-
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CE-Theses_Master(석사논문)
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