Rheologica Acta

, Volume 5, Issue 3, pp 184–187 | Cite as

The success of Casson's equation

  • G. W. Scott Blair


Many diverse materials, including some which are very unlikely to have a structure such as is postulated byCasson, obey his equation for shear-thinning plastic bodies. When the data range over only one or one and a half decades, as is usual, the curves cannot be visually distinguished from those using theHerschel andBulkley equation for which some explanation, depending much less on any specific type of structure, is already available. It also seems probable that the two equations are indistinguishable if both are transformed to allow for small “negative yield-values” in dilatant systems.


Polymer Half Decade Plastic Body Diverse Material Dilatant System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Dr. Dietrich Steinkopff Verlag 1966

Authors and Affiliations

  • G. W. Scott Blair
    • 1
  1. 1.National Institute for Research in DairyingShinfield, ReadingEngland

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