Synonyms
Definitions
Microstructure has no universal definition. In solids it is formed by grains, phases, interfaces, regular or irregular inclusions, etc. Microstructures appear at different length scales and often coexist at more than one length scale within the same solid. In continuum mechanics, no atomic or molecular structure of a material is considered. For waves, the main physical effect caused by microstructure is the wave dispersion.
Wave dispersion means that phase and group velocities of propagating waves are dependent on their frequency or wave number.
Background
In many cases the assumption of homogeneity of materials does not work. The behavior of many materials of engineering interest, such as alloys, composites, functionally graded materials, etc., is often influenced by an existing or emergent microstructure. In general, components of such a microstructure have different material properties,...
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Berezovski, A. (2018). Elastic Waves in Microstructured Solids. In: Altenbach, H., Öchsner, A. (eds) Encyclopedia of Continuum Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-53605-6_231-1
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DOI: https://doi.org/10.1007/978-3-662-53605-6_231-1
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