Dislocation Damping in Single Crystals of Controlled Substructure.
Abstract
Techniques have been developed for reproducibly growing Cu single crystals of controlled dislocation cell size and controlled random dislocation density. The ultrasonic pulse-echo attenuation of the crystals of various substructure has been measured from 2 to 100 MHz. The resonance bar damping of the crystals has been measured from 2 to 250 kHz. The damping and attenuation have been found to strong functions of substructure, and the 'vibrating membrane' modification of the Granato-Lucke theory of dislocation damping has been proposed to explain the relationship. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1972
- Accession Number
- AD0750712
Entities
People
- Nicholas F. Fiore
Organizations
- University of Notre Dame