Pulsed laser heating-induced generalized thermo-acoustic-elastic waves with two-temperature theory

Abstract

This study investigates the two-dimensional deformations within the framework of the two-temperature thermoelasticity theory, focusing on the interplay between laser pulse heating, acoustic pressure, and the resultant elastic material response. Our exploration is centered on the understanding of how acoustic waves, generated by laser pulses, influence the thermoelastic and mechanical behavior of materials. The role of acoustic pressure in modulating the thermoelastic response during laser pulse heating is investigated. Theoretical formulations are developed to describe the coupled evolution of temperature and deformation fields in the two-dimensional (2D) space. Employing normal mode analysis, the exact solutions of the main variations (wave propagation) of physical fields are obtained. Some boundary conditions are utilized for more accurate numerical simulations. The numerical results are discussed theoretically and the wave propagation of the physical quantities under study is represented graphically. The results obtained from this study have significant implications for various applications, including laser material processing, biomedical procedures, and non-destructive testing.