Temperature Compensation Improvements for Impedance Based Structural Health Monitoring

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dc.contributor.authorKonchuba, Nicholasen
dc.contributor.committeechairInman, Daniel J.en
dc.contributor.committeememberKurdila, Andrew J.en
dc.contributor.committeememberSeidel, Gary D.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:43:54Zen
dc.date.adate2011-08-31en
dc.date.available2014-03-14T21:43:54Zen
dc.date.issued2011-07-22en
dc.date.rdate2011-08-31en
dc.date.sdate2011-08-25en
dc.description.abstractStructural Health Monitoring is a useful tool for reducing maintenance costs and improving the life and performance of engineering structures. Impedance-Based SHM utilizes the coupled electromechanical behavior of piezoelectric materials to detect adverse changes and material and mechanical failures of structures. Environmental variables such as temperature present a challenge to assessing the veracity of damage detected through statistical modeling of impedance signals. An effective frequency shift method was developed to compensate impedance measurements for changes resulting from environmental temperature fluctuations. This thesis investigates how the accuracy of this method can be improved and be applied to a 100oF range of temperatures. Building up the idea of eliminating temperature effects from impedance measurements, this thesis investigates the possibility of using statistical moments to create a temperature independent impedance baseline.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-08252011-142532en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08252011-142532/en
dc.identifier.urihttp://hdl.handle.net/10919/44455en
dc.publisherVirginia Techen
dc.relation.haspartKonchuba_N_T_2011.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectStructural Health Monitoringen
dc.subjectImpedance-Based SHMen
dc.subjectPiezoelectric Materialsen
dc.subjectWaveletsen
dc.subjectTemperature Compensationen
dc.subjectEffective Frequency Shiften
dc.subjectDiscrete Wavelet Transformen
dc.titleTemperature Compensation Improvements for Impedance Based Structural Health Monitoringen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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