Non-destructive Evaluation of Integrated Piezoelectric Transducers by Thermal Waves and Thermal Pulses. (2016)

• Record Type: Journal Article
• Authors: Eydam, Agnes; Suchaneck, Gunnar; Gerlach, Gerald
• Is Part Of: Procedia technology. Volume 26(2016)
• Page Start: 59
• Page End: 65
• Publication Date: 2016
• Subjects: thermal pulse method -- laser intensity modulation method -- polarization -- piezoelectric -- Fourier transform.; Technology -- Congresses; Technology -- Periodicals; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Technology; Conference proceedings; Periodicals; 605
• DOI: 10.1016/j.protcy.2016.08.009
• Languages: English
• ISSNs: 2212-0173

Abstract

Abstract: In this work, we apply the thermal wave method and the thermal pulse method for non-destructive evaluation of the polarization state of piezoelectric transducers. The pyroelectric response of the transducer is analyzed after heating it by a modulated laser beam or laser pulses. We demonstrate that the Fourier transform of the pulse response of a piezoceramic plate is equal to the frequency response. The time domain signal is determined at several bandwidths of the amplifier. Frequency spectra are derived by a discrete Fourier transform and divided by the transfer function of the measurement set-up.