Ultrasonic Transducers Materials and Design for Sensors, Actuators and Medical Applications

About this book

Ultrasonic transducers are key components in sensors for distance, flow and level measurement as well as power and other applications of ultrasound. Ultrasonic Transducers reviews recent research in the design and application of this important technology. Part one provides an overview of materials and design of ultrasonic transducers. Part two goes on to investigate modelling and characterisation. Part three reviews applications, beginning with a review of surface acoustic wave devices and air-borne ultrasound transducers, and going on to consider ultrasonic high temperature and flaw detection systems, power, biomedical and micro scale ultrasonics, therapeutic ultrasound devices, piezoelectric and fibre optic hydrophones, and ultrasonic motors.

Contents

Part 1 Materials and design of ultrasonic transducers: Piezoelectricity and basic configurations for piezoelectric ultrasonic transducers
- Electromagnetic acoustic transducers (EMATs)
- Piezoelectric ceramics for ultrasonic transducers
- Thin film ultrasonic transducers based on lead zirconate titanate (PZT)
- Piezoelectric single crystals in ultrasonic transducers

Part 2 Modelling and characterisation of ultrasonic transducers: Modelling ultrasonic transducer performance: One-dimensional models
- Modelling the performance of micro-acoustic devices using the boundary element method
- Electrical evaluation of piezoelectric transducers
- Laser Doppler vibrometry for measuring vibration of ultrasonic transducers
- Optical visualization of acoustic fields: The schlieren technique, the Fresnel method and the photoelastic method applied to ultrasonic transducers

Part 3 Applications of ultrasonic transducers: Surface acoustic wave (SAW) devices
- Air-borne ultrasound transducers
- Ultrasonic transducers for non-destructive evaluation at high temperatures
- Analysis and synthesis of frequency-diverse ultrasonic flaw detection systems using Order Statistics and Neural Network Processors
- Power ultrasonics: New technologies and applications for fluid processing
- Nonlinear acoustics and selected applications in biomedical ultrasonics
- Therapeutic ultrasound with an emphasis on applications to the brain
- Micro scale ultrasonic sensors and actuators
- Piezoelectric and fiber optic hydrophones
- Ultrasonic motors

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Biography

Kentaro Nakamura is a Professor in the Tokyo Institute of Technology's Precision and Intelligence Laboratory, Japan. He has published extensively on varied aspects of electronic devices and equipment as well as measurement engineering.