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Title: Measurements of dynamic moduli and internal friction of metals and alloys
Author: Hinton, T.
Awarding Body: University of Surrey
Current Institution: University of Surrey
Date of Award: 1964
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The internal friction of lead-indium and lead-tin binary alloy single crystals has been measured as a function of amplitude, temperature and composition in the lead-rich solid solution phase, at about 4 Kc/s. The crystal specimens were electrostatically excited into longitudinal resonance and the resultant amplitude of vibration detected by a frequency modulation technique. The results are discussed in terms of Granato and Lucke's dislocation damping model. The value of the solute-dislocation binding energy deduced from the amplitude-dependent damping is in experimental agreement with that deduced from the amplitude-independent damping, but this value is about four times that calculated from Cottrell's expression. The predicted dependence over a limited composition range of the amplitude-independent damping on the fourth power of the solute concentration has been observed.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available