Jezersek Matija, Milanic Matija, Babnik Ales, Mozina Janez
Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia.
Ultrasonics. 2004 Apr;42(1-9):37-41. doi: 10.1016/j.ultras.2004.01.003.
This paper deals with a laser-cleaning process for removing a layer of paint. The effects of each individual laser pulse were monitored by a three-probe system. Ultrasonic signals from the rear surface of the substrate were obtained using an arm compensated Michelson interferometer, the optoacoustic waves in the surrounding air were detected using a laser beam deflection probe and the shape of the growing crater was measured using a laser anamorph profilometer. Two different cleaning lasers were used: an Excimer and a Nd:YAG laser. Typical parameters of the optodynamic signals versus the laser-pulse number are presented. A linear correlation between the quantity of ablated material and the integral of the ultrasonic signals was found together with an exponential relationship between the time-of-flight of the optoacoustic signals and the decoating rate.
本文探讨了一种用于去除一层油漆的激光清洗工艺。通过一个三探针系统监测每个激光脉冲的效果。使用臂补偿迈克尔逊干涉仪获取来自基板背面的超声信号，使用激光束偏转探头检测周围空气中的光声波，并使用激光变形轮廓仪测量不断扩大的凹坑形状。使用了两种不同的清洗激光器：准分子激光器和Nd:YAG激光器。给出了光动力学信号与激光脉冲数的典型参数。发现烧蚀材料量与超声信号积分之间存在线性相关性，同时光声信号的飞行时间与脱漆速率之间存在指数关系。
