The Motion of High Intensity Aerial Ultrasonic Waves (20 kHz) Entering a Perforation
スポンサーリンク
概要
- 論文の詳細を見る
The motion of high-intensity aerial converged ultrasonic waves (frequency: 20kHz) as studied as they entered a perforation which had a smaller diameter than the wavelength of the radiated acoustic waves (approx. 17.4mm). In addition, the characteristics of the sound field created in the perforation were studied experimentally. The acoustic waves incident upon the perforation were convergent, having a spreading angle of approx. 90°. As a result, it was elucidated that the acoustic waves favorably entered the perforation with a sufficiently smaller diameter (5mm max) than the wavelength of the acoustic waves. A sound field of standing waves was created with the sound pressure being the maximum at the bottom of the perforation. The sound pressure increased in the ratio of the 0.5th power of the electric power supplied to the sound source. When the electric power supplied to the sound source was 50W, a very powerful ultrasonic field of approx. 170 dB was created at the bottom of the perforation. [DOI: 10.1143/JJAP.41.3228]
- 社団法人応用物理学会の論文
- 2002-05-30
著者
関連論文
- The Motion of High Intensity Aerial Ultrasonic Waves (20 kHz) Entering a Perforation
- Basic Study of Detecting Defects in Solid Materials Using High-Intensity Aerial Ultrasonic Waves
- Erratum: ``Basic Study of Detecting Defects in Solid Materials Using High-Intensity Aerial Ultrasonic Waves''
- Linearly Convergent Aerial Ultrasonic Source Providing a Variable Incident Angle and Acoustic Radiation Force by Standing-Wave Ultrasonic Field
- Examination of Noncontact Excitation of Acrylic Board Using High-Intensity Aerial Ultrasonic Waves Having Finite Amplitudes
- Experimental Investigation of Deflection of High-Speed Water Current with Aerial Ultrasonic Waves
- Examinations of Behavior of Liquid Irradiated with High-Intensity Aerial Ultrasonic Waves in a Long Pore
- Examinations of Behavior of Liquid Irradiated with High-Intensity Aerial Ultrasonic Waves in a Long Pore (Special Issue : Ultrasonic Electronics) -- (Nonlinear acoustics, high power ultrasound, sonochemistry)
- Creation of Acoustic Field in Linear or Partially Bent Holes by High-Intensity Aerial Convergent Ultrasonic Waves
- New technique for linearly converging ultrasonic waves radiated by a stripe-mode vibrating plate