Investigation of Temperature Change under Influence of Ultrashort Laser Pulses Taking into Account Relaxation Properties of Materials

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Eremin, A.V.^1 ; Kudinov, V.A.^1 ; Stefanyuk, E.V.^1 ; Kudinov, I.V.^1

Samara State Technical University, Molodogvardeyskaya St. 244, Samara

443100, Russia^1

关键词: Flow intensity;    Fourier law;    Initial time;    Non-equilibrium process;    Nonlocalities;    Relaxation phenomena;    Relaxation property;    Temperature changes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/2/022029/pdf
DOI  :  10.1088/1757-899X/327/2/022029

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

By using the modified Fourier law's formula considering the relaxation of heat flow and temperature gradient, a mathematical model of the local non-equilibrium process of plate heating with ultrashort laser pulses was developed. The research showed that consideration of non-locality results in the delayed plate heat up irrespective of the laser radiation flow intensity. It was also shown that in consideration of the relaxation phenomena, the boundary conditions may not be fulfilled immediately - they may be set only within a definite range of the initial time.