| 缺陷红外检测的定量化分析研究 |
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| 引用本文： | 田裕鹏,周克印,梁华,梁斌,杨如意,于盛林.缺陷红外检测的定量化分析研究[J].仪器仪表学报,2008,29(11). |
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| 作者姓名： | 田裕鹏 周克印 梁华 梁斌 杨如意 于盛林 |
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| 作者单位： | 1. 南京航空航天大学自动化学院测试工程系,南京,210016
2. 南京锅炉压力容器监督检验研究院,南京,210001 |
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| 摘 要： | 本文对缺陷红外检测的定量化问题进行分析研究,在红外检测热传导理论模型的基础上,分析了缺陷深度与时间信息的关系,给出了起始分离时间点和对比度变化最大时间点的概念,并与对比度最大值时间点等进行比较。对缺陷大小、激励强度、激励时间对深度分析的影响进行研究。在缺陷大小的定量分析中,发现了时间序列网像中缺陷大小检测变化的规律,指出缺陷大小检测的最佳时间段。另外,采用时间序列图像求强度平均的方法确定实际检测中激励开始、结束时间,为分析缺陷与时间信息的关系建立时间基准点。
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| 关 键 词： | 红外检测 定量评定 缺陷 图像分析 |
Research on quantitative evaluation of infrared thermography |
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| Tian Yupeng,Zhou Keyin,Liang Hua,Liang Bing,Yang Ruyi,Yu Shenglin.Research on quantitative evaluation of infrared thermography[J].Chinese Journal of Scientific Instrument,2008,29(11). |
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| Authors: | Tian Yupeng Zhou Keyin Liang Hua Liang Bing Yang Ruyi Yu Shenglin |
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| Affiliation: | 1 College of Automation Engineering;Nanjing University of aeronautics and astronutics;Nanjing 210016;China;2 College of Aerospace Engineering;Nanjing University of aeronautics and astronatics;3 Nanjing Boiler and Pressure Vessel Supervision and Inspection Institute;Nanjing 210001;China |
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| Abstract: | In the paper,quantitative evaluation of infrared thermography is studied.Based on the heat conduction model,the relation between defect depth and time is analyzed.The concepts of initial separation time point and max- imum contrast changing time point are given and their relationship with defect depth is built.Comparison with maxi- mum contrast time point is made.The influence of defect size,external heat stimulation intensity and duration on ac- quired defect depth is analyzed.The changing rule of defect s... |
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| Keywords: | infrared thermography quantitative evaluation defect image analysis |
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