Generation and detection of thermoelastic waves in metals by a photothermal mirror method

O. A. Capeloto (Avtor), V. S. Zanuto (Avtor), G. V. B. Lukasievicz (Avtor), Luis Carlos Malacarne (Avtor), S. E. Bialkowski (Avtor), Tomaž Požar (Avtor), N. G. C. Astrath (Avtor)

Povzetek

We investigate the thermoelastic waves launched by a localized heat deposition. Pulsed laser excitation is used to generate mechanical perturbations in metals that are detected using the photothermal mirror method. This method detects the wavefront distortion of the probe beam reflected from the perturbed sample surface. Nanometer scale expansion of the material is induced just under the irradiated surface releasing transient thermoelastic waves of much smaller amplitudes on the surface. Numerical predictions and the experimental results are in a good agreement and represent both the thermal diffusion of the large amplitude, long-lasting outward bulge, and the released elastic waves.

Ključne besede

elastic waves;photothermal effects;wavefront sensing;mirrors;elasticity;optodynamics;

Podatki

Jezik:	Angleški jezik
Leto izida:	2016
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	535:531.3(045)
COBISS:	15057179
ISSN:	0003-6951
Št. ogledov:	644
Št. prenosov:	561
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	elastični valovi;fototermični pojavi;zaznavanje valovnih front;zrcala;elastičnost;optodinamika;
Vrsta dela (COBISS):	Članek v reviji
Konec prepovedi (OpenAIRE):	2017-11-09
Strani:	str. 1-4
Letnik:	ǂVol. ǂ109
Zvezek:	ǂiss. ǂ19
Čas izdaje:	Nov. 2016
DOI:	10.1063/1.4967530
ID:	10991296