Analysis of ultrasonic signals generated by pulsed laser action on a metal plate
An approach of detecting ultrasonic signals generated by pulsed laser is studied.The influence factors are analyzed on the received signals.Based on pulsed laser generating ultrasonic,a metal plate is used as a detected target.The ultrasonic is induced by way of combining high-power pulsed laser with optical attenuation unit,and then received by a piezoelectric ultrasonic transducer.The difference between ablation regime and thermo elasticity with different pulsed laser input parameters are compared.Moreover the ultrasonic propagation under different thickness of metal plate and the impacts of relative position of stimulating point and detection point on ultrasonic signal is researched.The validity of this method is demonstrated through these experiments and the laser input parameters are determined when in thermo elasticity.
laser ultrasonic pulse laser ablation regime thermo elasticity
Song Yanxing Wang Jing Feng Qibo Chen Shiqian
Key Lab Luminescence & Opt Informat, Minist Educ, Beijing Jiaotong University, China;Department of D Key Lab Luminescence & Opt Informat, Minist Educ, Beijing Jiaotong University, China
国际会议
济南
英文
961-966
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）