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Development of Structural Health Monitoring Systems Incorporating Acoustic Emission Detection for Spacecraft and Wind Turbine Blades

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dc.contributor.authorYun, Jinsiken
dc.contributor.committeechairHa, Dong Samen
dc.contributor.committeememberSchaumont, Patrick R.en
dc.contributor.committeememberInman, Daniel J.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T21:35:40Zen
dc.date.adate2011-06-01en
dc.date.available2014-03-14T21:35:40Zen
dc.date.issued2011-04-28en
dc.date.rdate2011-06-01en
dc.date.sdate2011-05-05en
dc.description.abstractStructural Health Monitoring (SHM) is the science and technology of monitoring and can assess the condition of aerospace, civil, and mechanical infrastructures using a sensing system integrated into the structure. SHM is capable of detecting, locating, and quantifying various types of damage such as cracks, holes, corrosion, delamination, and loose joints, and can be applied to various kinds of infrastructures such as buildings, railroads, windmills, bridges, and aircraft. A major technical challenge for existing SHM systems is high power consumption, which severely limits the range of its applications. In this thesis, we investigated adoption of acoustic emission detection to reduce power dissipation of SHM systems employing the impedance and the Lamb wave methods. An acoustic emission sensor of the proposed system continuously monitors acoustic events, while the SHM system is in sleep mode. The SHM system is evoked to perform the SHM operation only when there is an acoustic event detected by the acoustic emission sensor. The proposed system avoids unnecessary operation of SHM operations, which saves power, and the system is effective for certain applications such as spacecraft and wind turbine blades. We developed prototype systems using a Texas Instruments TMS320F2812 DSP evaluation board for the Lamb wave method and an MSP430 evaluation board for the impedance method.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05052011-181245en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05052011-181245/en
dc.identifier.urihttp://hdl.handle.net/10919/42507en
dc.publisherVirginia Techen
dc.relation.haspartYun_J_T_2011.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectWireless Sensor Networken
dc.subjectImpedance-Based SHMen
dc.subjectAcoustic Emissionen
dc.subjectStructural Health Monitoringen
dc.titleDevelopment of Structural Health Monitoring Systems Incorporating Acoustic Emission Detection for Spacecraft and Wind Turbine Bladesen
dc.typeThesisen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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