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Signal Processing and Analysis Applied to Powder Behavior in a Rotating Drum
Author(s) -
Crowder Timothy M.,
Sethuraman Vasu,
Fields Thomas B.,
Hickey Anthony J.
Publication year - 1999
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/(sici)1521-4117(199908)16:4<191::aid-ppsc191>3.0.co;2-0
Subject(s) - angle of repose , flow (mathematics) , drum , fourier analysis , granular material , fourier transform , spectral density , mechanics , materials science , computer science , physics , mathematics , engineering , composite material , mathematical analysis , mechanical engineering , telecommunications
Previous studies of the flow of granular materials in a rotating drum have described the observed time sequences of angle of repose or time to avalanche. The time between avalanches approach has been incorporated into a commercially available powder flow analysis tool. In the present study, the time to avalanche analysis was complemented with a Fourier Transform power spectrum and phase space analysis of the angle of repose time series and avalanche size variability determination. The avalanche size variability approach was found to most readily differentiate between the flow properties of powders across material types. A model was constructed to provide an explanation for the utility of this method.