Photothermal Thermoelastic Bending for Media with Thermal Memory
Апстракт
Photothermal thermoelastic bending depends on an optically generated dynamic thermal field distribution within a sample. A generalized description of the distribution is proposed, including the effects of a finite heat propagation velocity and a finite, non-zero time of thermal relaxation (known as thermal memory effects in generalized heat conduction theory), and finally the generated thermoelastic bending is calculated by using both a thin solid-plate approximation and a decoupling system of thermoelastic equations. The comparison between this model and the classical one, which does not account for thermal memory influence, has been made. If the sample is thicker than the value of its minimal thermal diffusion length, the difference between the two models becomes insignificant. Otherwise, it has been shown that the two models tend to overlap at low and high modulation frequencies of the excitation light, while in the mid-frequency range, some deviations become more apparent and therm...al memory properties of the sample must be taken into account. The suggested model enables evaluation of thermal memory properties for such a solid.
Кључне речи:
Heat propagation speed / Photothermal / Thermal memory / Thermoelastic bendingИзвор:
International Journal of Thermophysics, 2012, 33, 10-11, 2203-2209Напомена:
- 16th International Conference on Photothermal and Photoacoustic Phenomena (ICPPP), Nov 27-Dec 01, 2011, Merida, Mexico
DOI: 10.1007/s10765-012-1237-6
ISSN: 0195-928X
WoS: 000312072300062
Scopus: 2-s2.0-84888372006
Колекције
Институција/група
VinčaTY - JOUR AU - Nešić, Mioljub V. AU - Galović, Slobodanka AU - Šoškić, Zlatan AU - Popović, Milan AU - Todorovic, D. M. PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6985 AB - Photothermal thermoelastic bending depends on an optically generated dynamic thermal field distribution within a sample. A generalized description of the distribution is proposed, including the effects of a finite heat propagation velocity and a finite, non-zero time of thermal relaxation (known as thermal memory effects in generalized heat conduction theory), and finally the generated thermoelastic bending is calculated by using both a thin solid-plate approximation and a decoupling system of thermoelastic equations. The comparison between this model and the classical one, which does not account for thermal memory influence, has been made. If the sample is thicker than the value of its minimal thermal diffusion length, the difference between the two models becomes insignificant. Otherwise, it has been shown that the two models tend to overlap at low and high modulation frequencies of the excitation light, while in the mid-frequency range, some deviations become more apparent and thermal memory properties of the sample must be taken into account. The suggested model enables evaluation of thermal memory properties for such a solid. T2 - International Journal of Thermophysics T1 - Photothermal Thermoelastic Bending for Media with Thermal Memory VL - 33 IS - 10-11 SP - 2203 EP - 2209 DO - 10.1007/s10765-012-1237-6 ER -
@article{ author = "Nešić, Mioljub V. and Galović, Slobodanka and Šoškić, Zlatan and Popović, Milan and Todorovic, D. M.", year = "2012", abstract = "Photothermal thermoelastic bending depends on an optically generated dynamic thermal field distribution within a sample. A generalized description of the distribution is proposed, including the effects of a finite heat propagation velocity and a finite, non-zero time of thermal relaxation (known as thermal memory effects in generalized heat conduction theory), and finally the generated thermoelastic bending is calculated by using both a thin solid-plate approximation and a decoupling system of thermoelastic equations. The comparison between this model and the classical one, which does not account for thermal memory influence, has been made. If the sample is thicker than the value of its minimal thermal diffusion length, the difference between the two models becomes insignificant. Otherwise, it has been shown that the two models tend to overlap at low and high modulation frequencies of the excitation light, while in the mid-frequency range, some deviations become more apparent and thermal memory properties of the sample must be taken into account. The suggested model enables evaluation of thermal memory properties for such a solid.", journal = "International Journal of Thermophysics", title = "Photothermal Thermoelastic Bending for Media with Thermal Memory", volume = "33", number = "10-11", pages = "2203-2209", doi = "10.1007/s10765-012-1237-6" }
Nešić, M. V., Galović, S., Šoškić, Z., Popović, M.,& Todorovic, D. M.. (2012). Photothermal Thermoelastic Bending for Media with Thermal Memory. in International Journal of Thermophysics, 33(10-11), 2203-2209. https://doi.org/10.1007/s10765-012-1237-6
Nešić MV, Galović S, Šoškić Z, Popović M, Todorovic DM. Photothermal Thermoelastic Bending for Media with Thermal Memory. in International Journal of Thermophysics. 2012;33(10-11):2203-2209. doi:10.1007/s10765-012-1237-6 .
Nešić, Mioljub V., Galović, Slobodanka, Šoškić, Zlatan, Popović, Milan, Todorovic, D. M., "Photothermal Thermoelastic Bending for Media with Thermal Memory" in International Journal of Thermophysics, 33, no. 10-11 (2012):2203-2209, https://doi.org/10.1007/s10765-012-1237-6 . .