A new microcontrolled structural health monitoring system based on the electromechanical impedance principle

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorCortez, Nicolás E.
dc.creatorVieira Filho, Jozué
dc.creatorBaptista, Fabricio G.
dc.date2014-05-27T11:27:30Z
dc.date2016-10-25T18:41:07Z
dc.date2014-05-27T11:27:30Z
dc.date2016-10-25T18:41:07Z
dc.date2013-01-01
dc.date.accessioned2017-04-06T02:07:53Z
dc.date.available2017-04-06T02:07:53Z
dc.identifierStructural Health Monitoring, v. 12, n. 1, p. 14-22, 2013.
dc.identifier1475-9217
dc.identifier1741-3168
dc.identifierhttp://hdl.handle.net/11449/74244
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74244
dc.identifier10.1177/1475921712461163
dc.identifierWOS:000325812300002
dc.identifier2-s2.0-84872280889
dc.identifierhttp://dx.doi.org/10.1177/1475921712461163
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/895016
dc.descriptionThis article presents a new method to detect damage in structures based on the electromechanical impedance principle. The system follows the variations in the output voltage of piezoelectric transducers and does not compute the impedance itself. The proposed system is portable, autonomous, versatile, and could efficiently replace commercial instruments in different structural health monitoring applications. The identification of damage is performed by simply comparing the variations of root mean square voltage from response signals of piezoelectric transducers, such as lead zirconate titanate patches bonded to the structure, obtained for different frequencies of the excitation signal. The proposed system is not limited by the sampling rate of analog-to-digital converters, dispenses Fourier transform algorithms, and does not require a computer for processing, operating autonomously. A low-cost prototype based on microcontroller and digital synthesizer was built, and experiments were carried out on an aluminum structure and excellent results have been obtained. © The Author(s) 2012.
dc.languageeng
dc.relationStructural Health Monitoring
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectdirect digital synthesizer
dc.subjectelectromechanical impedance
dc.subjectmeasurement instruments
dc.subjectmicrocontroller
dc.subjectpiezoelectric transducers
dc.subjectStructural health monitoring
dc.subjectAluminum structures
dc.subjectAnalog to digital converters
dc.subjectCommercial instruments
dc.subjectDifferent frequency
dc.subjectDigital synthesizers
dc.subjectDirect digital synthesizer
dc.subjectElectromechanical impedance
dc.subjectExcitation signals
dc.subjectFourier transform algorithms
dc.subjectLead zirconate titanate
dc.subjectMeasurement instruments
dc.subjectOutput voltages
dc.subjectResponse signal
dc.subjectRoot Mean Square
dc.subjectSampling rates
dc.subjectStructural health
dc.subjectStructural health monitoring systems
dc.subjectDamage detection
dc.subjectMicrocontrollers
dc.subjectPiezoelectric transducers
dc.subjectSemiconducting lead compounds
dc.subjectComputer operating systems
dc.titleA new microcontrolled structural health monitoring system based on the electromechanical impedance principle
dc.typeOtro


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