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rheologyColumbia Encyclopedia entry: rheology
Rheologyrēŏl'əjē, branch of physics dealing with the deformation and flow of matter. It is particularly concerned with the properties of matter that determine its behavior when a mechanical force is exerted on it. Rheology is distinguished from fluid dynamics (see fluid mechanics) in that it is concerned with all three of the traditional states of matter rather than only with liquids and gases. Unlike polymer physics it is concerned with macroscopic properties and behavior and not with molecular structure. The results of rheology provide a mathematical description of the viscoelastic behavior of matter (see elasticity; viscosity). Applications of rheology are important in many areas of industry, involving metals, plastics, and many other materials.
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Wikipedia search results for: Rheology
From Wikipedia, the free encyclopedia
Rheology is the study of the flow of matter: mainly liquids but also soft solids or solids under conditions in which they flow rather than deform elastically W. R. Schowalter Mechanics of Non-Newtonian Fluids Pergamon ISBN 0-08021778-8 . It applies to substances which have a complex structure, including muds, sludges, suspensions, polymers, many foods, bodily fluids, and other biological materials. The flow of these substances cannot be characterized by a single value of viscosity While the viscosity of liquids normally varies with temperature, it is variations with other factors which are studied in rheology - instead the viscosity changes due to other...more »
Columbia Encyclopedia search results: rheology
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- ductility
Ductility, ability of a metal to plastically deform without breaking or fracturing, with the cohesion between the molecules remaining sufficient to hold them together (see adhesion and cohesio...
- rock
Rock, aggregation of solid matter composed of one or more of the minerals forming the earth's crust. The scientific study of rocks is called petrology. Rocks are commonly divided, according to...
