STRAIN AMPLITUDE DEPENDENT INTERNAL FRICTION AND THE YOUNG’S MODULUS DEFECT IN DAMAGED SOLIDS
The paper investigates the nonlinear effects in the propagation of acoustic waves in damaged materials having the property that the distance between grains is comparable with the Burgers vector magnitude. The main ideea is to unify the explanation at the atomic level of the following properties of the damaged material:
- dependence of the strain amplitude on the internal friction (ADIF) and the Young’s modulus defect (YMD);
- the behavior of ADIF over the range of low, moderate and high strain amplitudes, in terms on temperature and frequency;
- the correlation between ADIF and YMD via the dislocation motion.
Key words: Damaged material, Burger vector, strain amplitude dependent internal friction, Young’s modulus defect;.
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