Abstract
Applying the integral transform to the coupled problem of thermoelastic and heat conduction equations, the integral representation of the normal displacement field for the air-solid interface waves excited by a pulsed laser line source is obtained. The pole residues of the integrand are performed analytically, and the transient displacement field is calculated by using FFT technique. The thermoelastic excitation and detection of the air-solid interface waves is carried out by a laser ultrasonic system, on which the pulsed laser is focused into a line source onto the interface to excite the air-solid interface waves: leaky Rayleigh wave and Scholte wave, and the interface waves displacement signal is detected successfully by a SH130 laser heterodyne interferometer. The theoretic and experimental results are in good agreement.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Poirée, B., Luppé, F., Evanescent plane waves and the Scholte-Stonelely interface wave, J. Acoustique, 1991, 4(2): 575–588.
Überall, H., Surface waves in acoustics, in Physical Acoustics: Principles and Methods (eds. Mason, W. P., Thurston, R. N.). New York: Academic Press, 1973, X: 1–60.
Nasr, S., Duelos, J., Ledue, M., Scholte wave characterization and its decay for various materials, J. Acoust. Soc. Am., 1990, 87(2): 507–512.
Godinez-Azcuaga, V., Adler, L., Theoretical simulation of experimental observations of surface wave propagation on a fluid-saturated porous material, Review of Progress in Quantitative Nondestrusctive Evaluation, 1995, 14: 243–250.
Gusev, V., Desmet, C., Lauriks, W. et al., Theory of Scholte, Leaky Rayleigh, and Lateral wave excitation via the Laser-induced thermoelastic effect, J. Acoust. Soc. Am., 1996, 100(3): 1514–1528.
Desmet, C., Gusev, V., Lauriks, W. et al., Laser-induced thermoelastic excitation of Scholte waves, Appl. Phys. Lett., 1996, 69(21): 2939–2941.
Desmet, C., Gusev, V., Lauriks, W. et al., All-optical excitation and detection of Leaky Rayleigh waves, Optics Letters, 1997, 22(2): 69–71.
Rostyene, K., Glorieux, C., Gao, W. et al., Laser ultrasonic measurements of acoustic waves generated at solid-liquid interfaces, Acta Physica Sinica, 1999, 8(supplement): s219–224.
Rohsenow, W. M., Handbook of Heat Transfer Fundamentals, 2nd ed., New York: McGraw-Hill, 1985, 169, 187.
Holman, J. P., Thermodynamics, 3rd ed., New York: McGraw-Hill, 1980, 59, 113.
McDonald, F. A., On the precursor in laser-generated ultrasound waveforms in metals, Appl. Phys. Lett., 1990, 56(3): 230–232.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hu, W., Qian, M. The thermoelastic excitation of air-solid interface waves using the pulsed laser. Sci China Ser G: Phy & Ast 47, 199–207 (2004). https://doi.org/10.1360/03yw0190
Received:
Issue Date:
DOI: https://doi.org/10.1360/03yw0190