Dissipative and hysteresis loops as images of irreversible processes in nonlinear acoustic fields
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Author(s): | Claes Hedberg, Oleg Rudenko |
| Title: | Dissipative and hysteresis loops as images of irreversible processes in nonlinear acoustic fields |
| Journal: | Journal of Applied Physics |
| Year: | 2011 |
| Volume: | 110 |
| Issue: | 5 |
| Pagination: | Article number 053503 |
| ISSN: | 0021-8979 |
| Publisher: | American Institute of Physics |
| URI/DOI: | 10.1063/1.3631800 |
| ISI number: | 000294968600042 |
| Organization: | Blekinge Institute of Technology |
| Department: | School of Engineering - Dept. of Mechanical Engineering (Sektionen för ingenjörsvetenskap - avd. för maskinteknik) School of Engineering S- 371 79 Karlskrona +46 455 38 50 00 http://www.bth.se/ing/ |
| Language: | English |
| Abstract: | Irreversible processes taking place during nonlinear acoustic wave propagation are considered using a representation by loops in a thermodynamic parameter space. For viscous and heat conducting media, the loops are constructed for quasi-harmonic and sawtooth waves and the descriptive equations are formulated. The linear and nonlinear absorptions are compared. For relaxing media, the processes are frequency-dependent. The loops broadens, narrows, and bends. The linear and nonlinear relaxation losses of wave energy are shown. Residual stresses and irreversible strains appear for hysteretic media, and here, a generalization of Rayleigh loops is pictured which takes into account the nonlinearly frequency-dependent hereditary properties. These describe the dynamic behavior, for which new equations are derived. |
| Subject: | Physical Acoustics\General |
| Keywords: | Conducting media, Dynamic behaviors, Frequency-dependent; Hereditary property, Irreversible process, Irreversible strain, Nonlinear absorptions, Nonlinear acoustic fields, Nonlinear acoustic wave propagation; Rayleigh; Relaxation loss, Saw-tooth waves, Thermodynamic parameter, Wave energy |
