Abstract
Dislocations are pinned by point defects such as vacancies and interstitials. They vibrate anelastically responding to the ultrasonic wave and absorb its energy, resulting in increase of attenuation a and decrease of modulus. Granato and Lücke (1956) established a dislocation-damping theory to relate the ultrasonic velocity and attenuation with dislocation characteristics such as the segment length L and density Λ. The detailed expressions appear in their original paper and in many monographs (for example, Mason, 1958; Truell et al., 1969). For frequencies well below the resonance frequency of a single dislocation-segment line, they can be reduced to
,
.
Chapter PDF
Keywords
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2003 Springer Science+Business Media New York
About this chapter
Cite this chapter
Hirao, M., Ogi, H. (2003). In-Situ Monitoring of Dislocation Mobility. In: EMATs for Science and Industry. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-3743-1_7
Download citation
DOI: https://doi.org/10.1007/978-1-4757-3743-1_7
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4419-5366-7
Online ISBN: 978-1-4757-3743-1
eBook Packages: Springer Book Archive