Graduate Thesis Or Dissertation
 

Activation energies for impurities in vanadium from measurements of internal friction

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  • The capacity of a vibrating solid to convert its mechanical energy of vibration into heat is called internal friction. Its most common manifestation is the damping effect which causes loss in vibration amplitude of a freely vibrating solid. The damping is a result of the anelastic behaviour of materials. This is a property of a solid in virtue of which stress and strain are not uniquely related in the elastic range. Measurement of internal friction has been of wide engineering interest as regards the various dynamical properties of metals. In the last twenty years a wide variety of work in this field has been reported. The study of internal friction has proved itself to be a very useful tool in the investigation of the internal structure and atomic movements in crystalline solids due to its high sensitivity to the presence of physical imperfections and chemical impurities in solids.
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