粒子衝突音を用いた粒子識別に関する研究

概要

論文の詳細を見る
An apparatus for the measurement of particle velocity and the diameter of a spherical particle (smaller than 10 mm) using acoustic emission due to the impact of the particle on a circular plate is developed. Based on the dropping experiments of nylon, high carbon chromium bearing steel (SUJ) and glass particles, the initial peak height (P1) and the peak frequency (fp) of the impact sound are related to the impact velocity (v), particle diameter (D), Youngs modulus (Ep), Poissons ratio (μp) and particle density (ρp). The P1 and fp are empirically expressed by Eqs.(6) and (15) respectively. If the properties of spherical particle are known, it is possible to estimate D and v from these equations by measuring P1and fp of the acoustic signal due to the impact of a particle. If a mass of spherical particle is known, it is also possible to estimate Ep and μp from these equations by measuring D and v using the apparatus.
社団法人資源・素材学会の論文
2001-07-25