球に作用する音響放射圧
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The acoustic-radiation pressure due to incident plane progressive wave is computed for isotropic solid spheres, air bubbles and liquid spheres freely suspended in non-viscous fiuids. With respect to solid spheres in water, the elasticity dependency of radiation pressure is investigated using Hasegawa-Yoshioka's theory. It is found that the peaks and minima of the radiation-pressure curve tend to become more pronounced as the density or the sound velocity of material decreases, and that the deviation from the rigid-sphere solution becomes less prominent as poison's ratio decreases for ordinary solids. It is concluded that material such as beryllium is more suitable for ultrasonic-intensity measurement in water than a steel sphere or the like. The acoustic-radiation pressure on fluid spheres is computed using Yoshioka-Kawashima's theory. The radiation-pressure for mercury sphere in water, particularly, shows a series of minima as in the case of solid spheres.
- 社団法人日本音響学会の論文
- 1971-02-10
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