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Statistical Thermodynamics of Rubber Elasticity

Frederick T. Wall、Paul J. Flory1951-12-01The Journal of Chemical Physics

Two principal differences between the theories of rubber elasticity advanced by James and Guth and by other authors are examined in the light of certain fundamental concepts. First the distribution functions for molecular chain lengths in vulcanized rubber networks are considered from the point of view of symmetry. As…

Force Microscopy Techniques and ApplicationsPolymer Nanocomposites and PropertiesRheology and Fluid Dynamics Studies

Cavitation Produced by Ultrasonics: Theoretical Conditions for the Onset of Cavitation

E.A. Neppiras、B E Noltingk1951-12-01Proceedings of the Physical Society Section B

An attempt is made to define theoretically the conditions for the appearance of cavitation in liquids subjected to alternating pressure changes. It is found that cavitation is restricted to a definite range of variations of the following parameters: (i) alternating pressure amplitude, (ii) frequency of the pressure wa…

Ultrasound and Cavitation PhenomenaUltrasound and Hyperthermia ApplicationsMicrofluidic and Bio-sensing Technologies

Atomic Size Effect in the X-Ray Scattering by Alloys

Β. E. Warren、B. L. Averbach、B. W. Roberts1951-12-01Journal of Applied Physics

In a random solid solution, if the two atoms have appreciably different sizes, the nearest-neighbor distances and to a lesser extent the higher neighbor distances will be of three kinds, γAA, γAB, and γBB. The effect produces modulations in the diffuse intensity similar to those produced by short-range order. The size…

Microstructure and mechanical propertiesX-ray Diffraction in CrystallographyMetallic Glasses and Amorphous Alloys