会议专题

Infrared Thermal Wave Nondestructive Evaluation for Antioxide Coating on Metal Substrate

A novel infrared thermal wave nondestructive evaluation technique is introduced for coating quality control. Two groups of antioxide coating samples were detected with this method. In this method, a visible light pulse is heated on the surface of the sample and an infrared camera monitors the surface temperature field change continuously. Then the computer analyzes and processes the thermal images for detection. In this experiment, for the coating thickness is range from 10 to 120μm, the capture frequencies of infrared camera were set at 166Hz with whole frame window 320×240 pixels and 900Hz with reduced window 320×15 pixels. Therefore, the high resolution thermal images and temperature change curves were given. The results show that the coatings with different thickness can be distinguished under the frequency of 166Hz for 10-120μm and infrared thermal wave nondestructive evaluation technique is an effective method for rapid, large-area, real-time coating quality detection. But for higher precise and quantity measurement, the narrower pulse length and optimized algorithm is required.

coating thickness thermal wave nondestructive evaluation

Yanhong LI Yuejin ZHAO Cunlin ZHANG Song WU

School of Information Science Technology, Beijing Institute of Technology, Beijing 100081, China2. D Department of Physics, Capital Normal University, Beijing 100037, China China Academy of Launch Vehicle Technology, Beijing, China

国际会议

第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)

上海

英文

1923-1929

2008-10-25(万方平台首次上网日期,不代表论文的发表时间)