Characteristic Shearing Curves of a Powder Bed Measured with a Rotary Intrusion Rheometer [Translated]†

概要

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A rotary intrusion rheometer with a conical rotor was improved to detect the intruding stress as well as the shearing torque at a cell bottom. The characteristic curves of shearing torque versus a rotors depth of intrusion in a powder bed, and normal stress versus depth of intrusion were measured simultaneously under various operating conditions. Two experimental coefficients C and m were introduced to characterize the relationship between the shearing torque and the depth of intrusion. The coefficient m indicates the compressibility tendency of the powder bed during rotor intrusion. The friction property of powders is discussed based on the coefficient C measured at m =1 (without the compressive condition).† This report was originally printed in J. Soc. Powder Technology, Japan. 33(6), 510-515 (1996) in Japanese, before being translated into English by KONA Editorial Committee with the permission of the editorial committee of the Soc. Powder Technology, Japan.
公益財団法人ホソカワ粉体工学振興財団の論文