对涂料涂层腐蚀的表征和评估方法进行比较研究,使用流脉冲温度学
Chao Xue1, Yinqiang Zhang1, Song Ding1,2
1School of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 211816, China.
Sensors (Basel, Switzerland)
|August 12, 2023
概括
这项研究引入了一种斜率方法,用于通过使用流脉冲温度计 (ECPT) 检测钢铁腐蚀通过涂料涂层. 斜度方法为早期腐蚀检测和评估提供了更高的灵敏度.
科学领域:
- 材料科学 材料科学 材料科学
- 非破坏性测试 不破坏性测试
- 腐蚀工程 腐蚀工程
背景情况:
- 通过涂料涂层评估钢铁腐蚀对于结构完整性至关重要.
- 现有的方法在保护层下的腐蚀的准确表征方面面临挑战.
- 流脉冲热学 (ECPT) 为地下缺陷检测提供了一种有前途的非接触式方法.
研究的目的:
- 评估ECPT在检测和描述涂料涂层钢铁腐蚀方面的有效性.
- 提出和比较用于ECPT数据分析的新型特征提取方法.
- 为了确定ECPT信号与随时间的腐蚀进展之间的相关性.
主要方法:
- 研究了埃迪电流脉冲热像 (ECPT) 技术,用于分析热反应.
- 提出并比较了斜率方法与主要组件分析 (PCA),相位分析和特征提取的曲解.
- 与腐蚀进展相关的热曲线特征,以腐蚀高度衡量,长达10个月.
主要成果:
- 平均斜度显示了检测早期腐蚀 (0-6个月) 的最高灵敏度.
- 规范化的第二主要组件 (PC) 显示出良好的灵敏度和最好的测量尺度来量化腐蚀持续时间.
- 热分析证实电导率是诱导加热和热分布的主要因素.
结论:
- 斜率法是一种高度敏感的技术,用于早期涂料涂层腐蚀检测.
- ECPT,加上像PCA这样的先进特征提取,为腐蚀特征提供了一个强大的系统.
- ECPT被认证为有效的智能传感器系统,可在10个月内通过涂料涂层监测钢铁腐蚀.
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