Flexible Tunable Interdigital Transducer for Lamb Wave Generation

Abstract:

In this paper a novel concept of the MFC based IDT, Tunable Interdigital Transducer (T-IDT), is presented. The proposed transducer is the extension of the MFC based IDT, where the solid comb electrodes are replaced by series of discrete, stripe electrodes which can be connected independently into the groups and connected to the power source. The span between the centers of the electrodes' groups connected to the same phase are corresponding to the nominal wavelength of the wave excited by the transducer. This makes possible matching to different wavelengths without a need of physical changes of the electrodes’ layout.

• Periodical: Solid State Phenomena (Volume 251)
• Pages: 120-125
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.251.120
• Online since: July 2016
• Authors: Michał Mańka*
• Keywords: Damage Detection, IDT, Lamb Waves, NDT, SHM, Transducer, Ultrasonic Waves

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