A new technique for particle shape measurements has been examined using a LDV optical system for nonspherical particles. The principle of the present measuring system is based on the phase Doppler technique. Fringe pattern reflected to the backwards direction is captured by CCD camera and is processed to detect the spatial distortion of fringes, which enables us to estimate the local curvature of nonspherical particles. Calibration has been carried out by metal spheres of several sizes and nonspherical particles with an ellipsoidal revolution. The accuracy of ellipsoidal particle sizing could be estimated within 7 percent for the radius of local curvature.
|ジャーナル||Transactions of the Japan Society of Mechanical Engineers Series B|
|出版ステータス||Published - 1992|
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