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  2. Rule of mixtures - Wikipedia

    en.wikipedia.org/wiki/Rule_of_mixtures

    In materials science, a general rule of mixtures is a weighted mean used to predict various properties of a composite material. [ 1 ] [ 2 ] [ 3 ] It provides a theoretical upper- and lower-bound on properties such as the elastic modulus , ultimate tensile strength , thermal conductivity , and electrical conductivity . [ 3 ]

  3. Viscosity models for mixtures - Wikipedia

    en.wikipedia.org/wiki/Viscosity_models_for_mixtures

    One such complicating feature is the relation between the viscosity model for a pure fluid and the model for a fluid mixture which is called mixing rules. When scientists and engineers use new arguments or theories to develop a new viscosity model, instead of improving the reigning model, it may lead to the first model in a new class of models.

  4. Richmann's law - Wikipedia

    en.wikipedia.org/wiki/Richmann's_law

    [1] [9] According to this, the mixing temperature is the weighted arithmetic mean of the temperatures of the two initial components. Richmann's rule of mixing can also be applied in reverse, for example, to the question of the ratio in which quantities of water of given temperatures must be mixed to obtain water of a desired temperature.

  5. Viscoplasticity - Wikipedia

    en.wikipedia.org/wiki/Viscoplasticity

    In viscoplasticity, the development of a mathematical model heads back to 1910 with the representation of primary creep by Andrade's law. [9] In 1929, Norton [10] developed a one-dimensional dashpot model which linked the rate of secondary creep to the stress. In 1934, Odqvist [11] generalized Norton's law to the multi-axial case.

  6. Miscibility - Wikipedia

    en.wikipedia.org/wiki/Miscibility

    Diesel fuel is immiscible in water.The bright rainbow pattern is the result of thin-film interference.. Miscibility (/ ˌ m ɪ s ɪ ˈ b ɪ l ɪ t i /) is the property of two substances to mix in all proportions (that is, to fully dissolve in each other at any concentration), forming a homogeneous mixture (a solution).

  7. Mixture theory - Wikipedia

    en.wikipedia.org/wiki/Mixture_theory

    Mixture theory is used to model multiphase systems using the principles of continuum mechanics generalised to several interpenetrable continua. [1] The basic assumption is that, at any instant of time, all phases are present at every material point, and momentum and mass balance equations are postulated.

  8. Vegard's law - Wikipedia

    en.wikipedia.org/wiki/Vegard's_law

    In crystallography, materials science and metallurgy, Vegard's law is an empirical finding (heuristic approach) resembling the rule of mixtures.In 1921, Lars Vegard discovered that the lattice parameter of a solid solution of two constituents is approximately a weighted mean of the two constituents' lattice parameters at the same temperature: [1] [2]

  9. Combining rules - Wikipedia

    en.wikipedia.org/wiki/Combining_rules

    The Lorentz rule was proposed by H. A. Lorentz in 1881: [5] = + The Lorentz rule is only analytically correct for hard sphere systems. Intuitively, since , loosely reflect the radii of particle i and j respectively, their averages can be said to be the effective radii between the two particles at which point repulsive interactions become severe.

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