Damage Detection Using Electromechanical Impedance Technique Combined with Scanning Laser Vibrometry

作者: Szymon Opoka , Pawel Malinowski , Tomasz Wandowski , L. Skarbek , Wieslaw Ostachowicz

DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.569-570.687

关键词: Piezoelectric sensorLaser vibrometryAcousticsMaterials scienceEMIDeflection (engineering)Damage detectionElectronic engineeringElectromechanical impedance

摘要: The paper consists of two parts. First, Electromechanical Impedance (EMI) method is proven to be able determine some vibrational characteristics the investigated structure. In order verify this statement, Scannig Laser Vibrometry (SLV) used correlate frequency peaks velocity (or displacement) operational deflection shapes with corresponding ones obtained by EMI method. Finally, influence moisture content in CFRP sample on resonance using Damage detection indicator case based shifts resonant peaks.

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