Effect of Inter-Rod Coupling on 1-3 Piezocomposite High-Power Ultrasonic Transducers

Abstract:

Efficiency is a critical performance for a high-power ultrasonic transducer composed of 1-3 piezocomposites and geometric parameters of the composites can influence the efficiency of the transducer. The effect of inter-rod responses in the composite matrix on the efficiency was experimentally investigated in this study. For analyses, four PZT4-epoxy composite ultrasonic transducers with various volume fractions and inter-rod spacing were fabricated in-house. The experimental results demonstrated that the inter-rod coupling of the 0.1-mm spacing could significantly degrade the efficiency of the composite probe at about 1.0 MHz resonance since the 0.1-mm spacing between PZT4 rods was so small as to cause a high interference. At the same volume fraction, the transducer engineer should take the inter-rod coupling into account for the design of the high-power ultrasonic transducer.

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 2105-2108
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.2105
• Online since: February 2012
• Authors: Yu Li Lin, Gin Shin Chen, Hsin Chih Liu, Yu Cheng Lin
• Keywords: Characterization, High-Power, Piezocomposite, Transducer

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DOI: 10.1109/ultsym.2010.5935910

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