Acoustic emission from a dislocation kink accelerated by an external force
The emission of elastic waves from a dislocation kink accelerated by a constant external force is presented. The dynamics of the dislocation kink interacting with longitudinal acoustic waves is described by a sine-Gordon--d'Alembert system, i.e. a sine-Gordon equation nonlinearly...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Institute of Fundamental Technological Research Polish Academy of Sciences
2005-01-01
|
| Series: | Archives of Acoustics |
| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/516 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850105289602236416 |
|---|---|
| author | E. Douka B. Polyzos A. Trochidis |
| author_facet | E. Douka B. Polyzos A. Trochidis |
| author_sort | E. Douka |
| collection | DOAJ |
| description | The emission of elastic waves from a dislocation kink
accelerated by a constant external force is presented. The dynamics of the
dislocation kink interacting with longitudinal acoustic waves is described by a
sine-Gordon--d'Alembert system, i.e. a sine-Gordon equation nonlinearly coupled
with the d'Alembert wave equation. Within the framework of this model, the
evolution of velocity of the dislocation kink altered by the applied force is
determined, allowing for mechanical couplings. The total energy radiated from
the dislocation kink and its spectral composition is calculated numerically and
analytically. Computer simulations are presented, which graphically illustrate
the analytical considerations and model the acoustic radiation. Key words:
acoustic emission, dislocations dynamics, nonlinear waves. |
| format | Article |
| id | doaj-art-2a3b55478eaf4942b75d3e2db9d29cd2 |
| institution | OA Journals |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2005-01-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-2a3b55478eaf4942b75d3e2db9d29cd22025-08-20T02:39:08ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2005-01-01302Acoustic emission from a dislocation kink accelerated by an external forceE. Douka0B. Polyzos1A. Trochidis2University of Thessaloniki, School of Engineering, Mechanics DivisionUniversity of Thessaloniki, School of Engineering, Physics DivisionUniversity of Thessaloniki, School of Engineering, Physics DivisionThe emission of elastic waves from a dislocation kink accelerated by a constant external force is presented. The dynamics of the dislocation kink interacting with longitudinal acoustic waves is described by a sine-Gordon--d'Alembert system, i.e. a sine-Gordon equation nonlinearly coupled with the d'Alembert wave equation. Within the framework of this model, the evolution of velocity of the dislocation kink altered by the applied force is determined, allowing for mechanical couplings. The total energy radiated from the dislocation kink and its spectral composition is calculated numerically and analytically. Computer simulations are presented, which graphically illustrate the analytical considerations and model the acoustic radiation. Key words: acoustic emission, dislocations dynamics, nonlinear waves. https://acoustics.ippt.pan.pl/index.php/aa/article/view/516 |
| spellingShingle | E. Douka B. Polyzos A. Trochidis Acoustic emission from a dislocation kink accelerated by an external force Archives of Acoustics |
| title | Acoustic emission from a dislocation kink accelerated by an external
force |
| title_full | Acoustic emission from a dislocation kink accelerated by an external
force |
| title_fullStr | Acoustic emission from a dislocation kink accelerated by an external
force |
| title_full_unstemmed | Acoustic emission from a dislocation kink accelerated by an external
force |
| title_short | Acoustic emission from a dislocation kink accelerated by an external
force |
| title_sort | acoustic emission from a dislocation kink accelerated by an external force |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/516 |
| work_keys_str_mv | AT edouka acousticemissionfromadislocationkinkacceleratedbyanexternalforce AT bpolyzos acousticemissionfromadislocationkinkacceleratedbyanexternalforce AT atrochidis acousticemissionfromadislocationkinkacceleratedbyanexternalforce |