Accession Number:

AD0724914

Title:

Damping by Extended Dislocations,

Descriptive Note:

Corporate Author:

ROYAL MILITARY COLL OF CANADA KINGSTON (ONTARIO)

Report Date:

1970-07-13

Pagination or Media Count:

17.0

Abstract:

A model in which an extended dislocation jumps about a pinning agent discussed previously by Blair et al. gives rise to damping and modulus defect terms. These are calculated for dislocation loops of constant length and for an exponential distribution of loop lengths. The variation of damping and modulus defect with applied cyclic stress and with temperature are deduced and compared with the behavior of a Granato-Lucke breakaway model. The above terms are also calculated for the general problem in which a system jumps between two potential wells. Author

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE