The Analysis of the Heat Transfer Effect on the Thermoelastic Response of Metals under Pulsed Laser Impact
This paper presents an analysis of the effect of heat transfer in metals on the parameters of their thermal stresses caused by pulsed laser impact. The dynamic problem of thermoelasticity is regarded as a two-stage process. The first stage of the process is determined by the time of action of the radiation pulse; the second stage depends on the dynamics of the heat transfer process after the end of action of the laser pulse. It is shown that the analysis of stresses at the heat transfer stage based on the traditional system of thermoelasticity equations allows an adequate description of experimental results. The tensile stresses formed at the heat transfer stage lead to the possibility for metallic objects to move toward the heat source.
Keywordsthermoelasticity heat transfer pulsed laser radiation
Unable to display preview. Download preview PDF.
- 2.V. E. Gusev and A. A. Karabutov, Laser Optoacoustics (Nauka, Moscow, 1991; American Inst. of Physics, New York, 1993).Google Scholar
- 3.E. M. Kartashov, Analytical Methods in the Theory of Thermal Conductivity of Solids (Vysshaya Shkola, Moscow, 2001) [In Russian].Google Scholar
- 6.B. V. Vorobyev, A. I. Nedbay, Yu. V. Sudenkov, and N. M. Filippov, “Investigation of the mechanisms of interaction of nanosecond laser radiation with metals,” Pis’ma Zh. Tekh. Fiz. 9, 395–399 (1983).Google Scholar
- 10.S. I. Anisimov, Ya. M. Imas, G. S. Romanov, et al., Action of High-Power Radiation on Metals (Nauka, Moscow, 1970) [in Russian].Google Scholar