The Selection of Couplant in Ultrasonic Testing for Stone Relics
- 作者：LI Yao-HuaYANG JinGAO FengYAO YuanLI Lei
- 会议时间：2011-11-11
- 关键词：无损检测 ; 石质文物 ; 耦合剂 ; 超声波
- 作者单位：LI Yao-Hua,YANG Jin,LI Lei(School of Geophysics and Information Technology, China University of Geosciences, Beijing,100083,China)GAO Feng(Chinese Academy of Cultural Heritage, Beijing, 100029, China)YAO Yuan(China metallurgical Geology Bureau-Institute of Mineral Resources Research, Beijing, 100025, China)
- 母体文献：全球华人无损检测高峰论坛论文集
- 会议名称：全球华人无损检测高峰论坛
- 会议地点：厦门
- 主办单位：中国机械工程学会
- 语种：chi
摘要
Datong Yungang Grottoes is called "Treasure house of Chinese grotto art", which dating back over 1500 years of history, due to long-term suffering from human factors, natural conditions, climate and environmental change, the existing state is deteriorating. Therefore, it is urgent to carry on systematic and comprehensive exploration, restoration and protection. The ultrasonic method as a quick and effective nondestructive technology plays an important effect in disease detection and protection of stone relics. Application of couplant is a necessary precondition to obtain satisfactory results, and inappropriate choice of couplant will directly affect the test accuracy. In this paper, the detection methods of TO and test block were used indoor for testing kinds of common and self-made couplants, though analyzing the first wave of sound and the root mean square error, combining with the characteristics of the actual target of detection, analyzing and evaluating material, complexity of operation, advantages and disadvantages of each couplant, to propose alternative couplant and also provide technical basis for the stone relics of Yungang Grottoes on-site inspectton.