摘要
传统的化学清洗法和超声波清洗方法不能对考古金属器物微米级污粒进行有效清洗,为了提高对考古金属器物细微污物的清洗能力,提出一种基于不同波长激光清洗技术的考古金属器物清洗技术。采用激光器发射单色性很强的激光波束进行考古金属器物的点扫描处理,激光束射于物体表面,生成考古金属器物的激光三维图像,利用激光三维图像的诱导和色散性进行光辐射特征分离,对考古金属器物的大量微孔隙中污染杂物进行电荷定位,采用激光脉冲振动检测方法,进行污物的回波检测,根据检测结果进行激光定位识别,利用不同波长的激光探测联合作用方法克服污物与基体物质表面之间的结合力,根据被清洗基体物质与污物的光学特性进行光斑检测,在存在光斑的区域进行定点清洗,提高了对细微污物的清洗效果。仿真测试结果表明,采用该方法进行考古金属器物清洗的去污能力较强,对微米级污粒的定位能力较好。
The traditional chemical cleaning method and ultrasonic cleaning method can not effectively clean the fine dirt of the archaeological metal object, in order to improve the cleaning ability of the fine dirt of the archaeological metal ware, This paper presents a cleaning technique for archaeological metal objects based on different wavelength la? ser cleaning technology. The laser beam with strong monochromatic intensity is used for spot scanning of archeological metal objects. The laser beam is projected on the surface of the object, and a laser three-dimensional image of the archaeological metal object is generated. In this paper, the inducement and dispersion of laser 3D images are used to separate the characteristics of light radiation, to locate the contaminated debris in a large number of micropores of archeological metal objects, and to detect the echo of dirt by using laser pulse vibration detection method. According to the detection results, the laser location identification is carried out, and the combined action of laser detection at different wavelengths is used to overcome the adhesion between the surface of the dirt and the substrate, and the spot detection is carried out according to the optical characteristics of the cleaned matrix and the sewage. The spot cleaning in the area where the spot exists improves the cleaning effect of the fine dirt. The simulation results show that the method has strong decontamination ability and good locating ability to fine dirt.
作者
刘函
衣蕊
李延祥
LIU Han;YI Rui;LI Yanxiang(University of Science & Technology Beijing, Beijing 100083 ,China;Northeast Petroleum University,Daqing Heilongjiang 163318 ,China)
出处
《激光杂志》
北大核心
2019年第4期149-153,共5页
Laser Journal
基金
国家自然科学基金(No.51174034)
关键词
激光清洗
考古金属器物
清洗
细微污物
结合力
laser cleaning
archaeological metal objects
cleaning
Fine dirt
binding force
