Analysis of Temperature Field on Infrared Active Detection of Heavy Pressure Vessels Wall Surface Defect

摘要：

Infrared thermal imaging technology is a new nondestructive detection technology, which is widely used in pressure vessel detection. In this paper, three-dimensional temperature distribution model of pressure vessel with defects is established, and the influence factors on infrared detection of pressure vessel defect are researched. The influence of environmental factors, thermal excitation strength, thermal excitation time and defect size on infrared detection is analyzed. The results show that: (1) increasing thermal excitation can degrade the maximum reduced temperature when infrared radiation thermal excitation temperature is lower than 200 ℃, while the reduced temperature can be raised with the increased thermal excitation when the temperature is higher than 200 ℃. (2) the maximum comparison temperature increased first and decreased afterwards with the increasing thermal excitation time, finally reduce to the comparison temperature under steady state. (3) the influence of wind speed and surface blackness in environmental factors on infrared detection precision is greater.

关键词： Heavy Pressure Vessel Defect Infrared Active Detection Temperature Field

作者: Guo Zhong Wu Fen Fen Song Dong LI

作者单位: The College of Architecture and Civil Engineering, Northeast Petroleum University, Daqing 163318,China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 1172-1176

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）