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Fractal dimensions of particle projected shapes

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In order to quantitatively determine a particle shape, the profile data of particle-projected figures were fed into a personal computer using a digitizer, and then the fractal dimensions of the particles were calculated using the divider method. The fractal dimensions of 28 different kinds of sample particles were compared with Wadell's working sphericity and the degree of circularity (or the perimeter ratio) based on the same particle-projected figures. The results show that the fractal dimensions of samples are correlated with circularity. The fractal dimension becomes a useful means for the quantitative representation of a particle-projected shape as well as circularity.

Affiliations: 1: Department of Chemical Engineering, Himeji Institute of Technology, Himeji 671-22, Japan; 2: Shionogi & Co. Ltd, Amagasaki 660, Japan


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