管道腐蚀检测通过组延迟积累效应的多路径环形引导波包管道腐蚀检测
Yongqi Cui1, Liang Zeng1, Zhi Luo2
1School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710049, China.
Ultrasonics
|June 26, 2025
概括
本研究引入了一种使用环导波 (CGW) 的新管道腐蚀检测方法. 它通过积累来自多路径波包的组延迟变化来提高检测灵敏度,克服了传统的限制.
科学领域:
- 非破坏性测试是指非破坏性测试.
- 材料科学 是一种材料科学.
- 波浪的传播方式
背景情况:
- 环导波 (CGW) 检查是检测管道腐蚀的一个有希望的方法.
- 传统的飞行时间 (TOF) 方法由于小组延迟变化低于检测极限而与初始腐蚀作斗争.
研究的目的:
- 提出一种新的管道腐蚀检测方法,利用CGW多路径波包的集体延迟积累效应.
- 为了提高CGW检查的灵敏度,用于早期腐蚀检测.
主要方法:
- 在正常和腐蚀的CGW响应中估计多路径波包的组延迟.
- 采用离散分析交叉关联方法进行组延迟估计.
- 分析跨多个波包传递的组延迟的积累效应.
主要成果:
- 多路径波包中的组延迟积累效应使得腐蚀诱导的变化可检测,超过采样频率限制.
- 增加的腐蚀面积始终增强了群体延迟积累效应.
- 阶段转移变化表现出不规则的行为与日益增长的腐蚀,与稳定组延迟积累不同.
结论:
- 拟议的方法通过利用多路径波包组延迟积累,有效地提高了对管道腐蚀的检测灵敏度.
- 这种方法克服了传统TOF方法在检测初始腐蚀方面的局限性.
- 集团延迟积累的稳定性为腐蚀监测提供了可靠的指标.
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