光学学报, 2010, 30 (2): 456, 网络出版: 2010-02-02
红外热波无损检测技术用于聚丙烯管道缺陷的检测
Infrared Thermal Wave Non-Destructive Inspection for Defects of Polypropylene Pipeline
摘要
由于聚丙烯管道所处的工作环境恶劣,长期使用后极易形成内壁腐蚀、结垢和裂纹等缺陷,导致管道的性能降低,引发事故,因此对聚丙烯管理进行严格的天损检测是十分必要的。将红外热波无损检测技术用于预埋有三种缺陷(腐蚀、结垢和裂纹)的聚丙烯管道的无损检测;对红外热像仪采集的数据进行处理,得到典型时刻的热图和温度对数-时间曲线。通过分析典型时刻热图的灰度随时间变化的情况和曲线的斜率变化,对三种缺陷类型进行定性分析,并对缺陷进行定位。利用图像处理软件测量出了腐蚀面积。实验结果表明,红外热波无损检测技术可以快速、直观和有效的检测聚丙烯管道的三种常见缺陷。
Abstract
After long-term service in rugged environment,polypropylene pipeline easily forms defects such as corrosion on the wall,deposition and crack. The defects greatly reduce the performance of the pipeline and easily cause accidents. The rigorous non-destructive inspection to the polypropylene pipeline must be carried. Infrared thermal wave non-destructive inspection technology was applied to detect three kinds of flaws which were embedded in polypropylene pipeline. Data which was collected by IR camera was processed,the typical time thermograph and the curve of logarithmic temperature-time can be extracted. Via to analyzing the time-variation gray scale of typical time thermograph and the slope coefficient of curve,the type and the information of position of flaws can be obtained. Utilizing the software of image processing,the area of corrosion can be calculated. The results indicated that this technology can make fast,direct-viewing,effective examination for the polypropylene pipeline with 3 kinds of common flaws.
赵石彬, 张存林, 伍耐明, 段玉霞, 李艳红. 红外热波无损检测技术用于聚丙烯管道缺陷的检测[J]. 光学学报, 2010, 30(2): 456. Zhao Shibin, Zhang Cunlin, Wu Naiming, Duan Yuxia, Li Yanhong. Infrared Thermal Wave Non-Destructive Inspection for Defects of Polypropylene Pipeline[J]. Acta Optica Sinica, 2010, 30(2): 456.