Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)

The Korean Society for Nondestructive Testing (한국비파괴검사학회)
권호 표지

Generation of Thermoelastic Waves by Irradiating a Metal Slab with a Line-Focused Laser Pulse

  • Yoo, Jae-Gwon (Laboratory for Quantum Optics, Korea Atomic Energy Research Institute) ;
  • Baik, S.H. (Laboratory for Quantum Optics, Korea Atomic Energy Research Institute)
  • Published : 2006.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

A 2D finite-element numerical simulation has been developed to investigate the generation of ultrasonic waves in a homogeneous isotropic elastic slab under a line-focused laser irradiation. Discussing the physical processes involved in the thermoelastic phenomena, we describe a model for the pulsed laser generation of ultrasound in a metal slab. Addressing an analytic method, on the basis of an integral transform technique, for obtaining the solutions of the elastodynamic equation, we outline a finite element method for a numerical simulation of an ultrasonic wave propagation. We present the numerical results for the displacements and the stresses generated by a line-focused laser pulse on the surface of a stainless steel slab.

Keywords

References

  1. Abramowitz, M. and Stegun, I.(1972) Handbook of Mathematical Functions (Dover, New York)
  2. Burnett, D. S. (1987) Finite Element Analysis: from Concepts to Applications (Addison-Wesley, Reading)
  3. Crump, K. S. (1976) Numerical Inversion of Laplace Transforms Using a Fourier Series Approximation, J. ACM, Vol. 22, pp. 89-96
  4. Durbin, F. (1974) Numerical Inversion of Laplace Transforms: An Efficient Improvement to Bubner and Abate's Method, Computer J., Vol. 17, pp. 371-376 https://doi.org/10.1093/comjnl/17.4.371
  5. Frankel, J.I., Brian Vick and Ozisik, M. N. (1985) Flux Formulation of Hyperbolic Heat Conduction, J. Appl. Phys., Vol. 58, pp. 3340-3345 https://doi.org/10.1063/1.335795
  6. Kishore, N. N.,Sridhar, I. and Iyengar, N. G. R. (2000) Finite Element modelling of the Scattering of Ultrasonic Waves by Isolated Flows, NDT&E Int. Vol. 33, pp. 297-305 https://doi.org/10.1016/S0963-8695(99)00054-7
  7. Ozisik, M. N. and Brian Vick (1984) Propagation and Reflection of Thermal Waves in a Finite Medium, Int. J. Heat Mass Transfer, Vol. 27, pp. 1845-1854 https://doi.org/10.1016/0017-9310(84)90166-2
  8. Reinhold Ludwig and William Lord (1988) A Finite Element Formulation for the Study of Ultrasonic NDT Systems, IEEE Trans. Ultrason. Ferroelectr. Frequency Control, Vol. 35, pp. 809-820 https://doi.org/10.1109/58.9338
  9. Scrby, C. B. and Drain, L. E. (1990) Laser U!trasonics: Techniques and Applications (Adam Hilger, Bristol)
  10. Yoo, Jaegwon., Lim, C. H. and Baik, S. H. (2006) Thermoelastic Surface Waves Generated by Irradiation with a Line-Focused Laser Pulse, J. Korean Phys. Soc., Vol. 48, pp. 61-66
  11. Yoo, Jaegwon, Lim, C. H. and Kim, Cheoljung (2005) Numerical Study of Thermal Wave Propagating in a Disc Slab Irradiated by Ultrashort Laser Pulse, J. Korean Phys. Soc., Vol. 47, pp. 63-67
  12. Yoo, Jaegwon, Park, S. H., Jeong, Y. U., Lee, B. C. Rhee, Y. J. and Cho, S. O. (2004) A Numerical Study of the Integral Equations for the Laser FieIds in Free-Electron Lasers, J. Korean Phys. Soc., Vol. 44, pp. 1407-1411
  13. Zerwer, A. M. Polak, A. and Santamarina, J. C. (2003) Rayleigh Wave Propagation for the Detection of Near Surface Discontinuities: Finite Element Modeling, J. Nondest. Eval., Vol. 22, pp. 39-52 https://doi.org/10.1023/A:1026307909788