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Published on: August 21, 2018
PSpice simulation of ultrasonic systems.
J van Deventer1, T Lofqvist, J Delsing
1Dept. of Comput. Sci. and Electr. Eng., Lulea Univ. of Technol.
Summary
This study introduces a PSpice simulation model for ultrasound transducers, accounting for temperature and frequency effects. The model accurately predicts wave propagation, validating its use for material property measurements.
Area of Science:
- Acoustics
- Materials Science
- Electrical Engineering
Background:
- Electrical analogies are established for simulating ultrasound transducer wave generation and propagation.
- Accurate simulation requires incorporating temperature and frequency dependencies.
Purpose of the Study:
- To propose a PSpice simulation approach for ultrasound transducer performance, including temperature and frequency dependency.
- To apply this simulation to a pulse-echo setup for determining material properties.
Main Methods:
- An electrical transmission line analogy for acoustic wave propagation was established.
- PSpice simulations were conducted for transducer performance, incorporating temperature and frequency effects.
- Experiments were performed using water, glycerine, PMMA, and PEEK at various temperatures and frequencies (1-12 MHz).
Main Results:
- The PSpice simulation approach showed good agreement with experimental results.
- The study determined the speed of sound and attenuation in liquids and polymers.
- Inappropriate attenuation models for high-viscosity liquids like glycerine were identified.
Conclusions:
- The proposed PSpice model effectively simulates ultrasound transducer behavior across varying conditions.
- The simulation is valuable for characterizing material properties like speed of sound and attenuation.
- Existing attenuation models for high-viscosity liquids require revision.
