Finite element simulation of laser generated ultrasound waves in aluminum plates
AUTOR(ES)
Soltani, Peyman, Akbareian, Negar
FONTE
Lat. Am. j. solids struct.
DATA DE PUBLICAÇÃO
2014
RESUMO
The Laser-Ultrasonic technique uses laser energy to generate ultrasound waves in various solids. This technique allows inspecting large structures. The generated ultrasound wave form is affected by features of laser pulse (wavelength, pulse duration, power density). The goal of this paper is to study the effects of laser parameters (rise time and beam radius of laser) on the laser generated surface acoustic waves in an aluminum plate. The results obtained from the finite element model of laser generated ultrasound are presented in terms of temperature and displacement. At first, the transient temperature field can be precisely calculated by using the finite element method. Then, laser generated surface acoustic wave forms are calculated in aluminum plate. Results from numerical simulation are compared with other references; the accuracy of the method is proved accordingly. In this simulation the sequential field coupling is used. Simulation results show that the laser parameters have a significant influence on the ultrasound waves and will be able to be utilized to choose best experimental parameters of laser.
Documentos Relacionados
- Simulation of Stress Concentration Problems in Laminated Plates by Quasi-Trefftz Finite Element Models
- Finite Element Simulation of Interlaminar and Intralaminar Damage in Laminated Composite Plates Subjected to Impact
- Vibration analysis of stiffened plates using finite element method
- Novel mixed finite element models for nonlinear analysis of plates
- Simulation of Active Eye Motion Using Finite Element Modelling