THE DEFINITION of the newly coined word “rheology” in the constitution of the Society of Rheology, when it was founded in 1929 under Eugene C. Bingham of Lafayette College, was “fundamental and practical knowledge concerning the deformation or flow of matter.” As Markus Reiner recalled telling Bingham at the time, this word would appear to have the same meaning as the term continuum mechanics. An operational definition obtained by an examination of what most rheologists actually do would more likely lead to the conclusion that, as accurately as any scientific discipline can be defined, “rheology—a branch of mechanics—is the study of those properties of materials which determine their response to mechanical force,” a statement that appears in a brochure recently issued by the Society of Rheology. This more restricted view, the one that I shall take in delineating the area covered in this historical review, removes from consideration the more complicated flow and deformation problems usually discussed in fluid mechanics, hydrodynamics and elasticity.
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April 1968
April 01 1968
The emergence of rheology
From the days of Newton and Hooke scientists from many fields have contributed to the study of the deformation of materials. But a lack of communication hindered developments until rheology emerged as a formal branch of mechanics.
Physics Today 21 (4), 23–30 (1968);