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MADRID , 2-7 SEPTEMBER 2007 Point-Convergence Type Aerial Ultrasonic Sound Source Using a Flexural Vibrating Circular Plate and High-Intensity Sound Waves Generated by That Sound Source
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2007 |
| Abstract | The author has developed a high-intensity ultrasonic sound source that converges aerial ultrasonic waves (approx. 20 kHz) radiated from a flexural vibrating circular plate into a point. This sound source is structured by combining a flexural vibrating plate with a circular flat reflecting plate and a paraboloid reflector. The sound source is characterized by its size, which is smaller than any other type of sound source due to its axial symmetry, and by its output of sound wave energy, which is boosted by increasing the radiation resistance of the vibrating plate through a combination with the circular reflecting plate. This paper discusses the principle of sound wave convergence of this sound source and the radiation resistance characteristics as observed when combined with the circular reflecting plate. The sound source was experimentally fabricated. In this case, extremely high-intensity ultrasonic sound waves of approximately 173 dB (electric input: 30 W), which were generated in free space. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://sea-acustica.es/WEB_ICA_07/fchrs/papers/ult-07-005.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
