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管道曲的导波断层扫描基于完整的波形反转

Carlos-Omar Rasgado-Moreno¹, Marek Rist², Raul Land²

¹Department of Civil Engineering and Architecture, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia.

|January 8, 2025

概括

使用全波形反转 (FWI) 的导波断层扫描 (GWT) 准确地绘制了管道曲壁的薄化. 这种先进的技术提供了高分辨率的缺陷检测,改善了结构完整性的监控.

科学领域:

材料科学与工程材料科学与工程
非破坏性测试是指非破坏性测试.
结构健康监测结构健康监测

背景情况:

管道曲容易导致墙壁变薄,原因是流动诱导的应力和速度变化.
传统的超声波厚度测量是局部化的,可能耗时.
指导波断层扫描 (GWT) 为损害评估提供了更全面的方法.

研究的目的:

实施和评估基于全波形反转 (FWI) 的GWT方法,用于钢管曲线的高分辨率厚度重建.
评估FWI在不同条件下检测和量化墙壁稀释缺陷的有效性.

主要方法:

在2D域中使用森参数在人造异型管道曲中建模波场.
实施GWT方法,使用全波形反转 (FWI) 来进行厚度重建.
在带有人工缺陷的管道曲上进行数值模拟和实验验证.

主要成果:

基于FWI的GWT方法成功地重建了管道曲中光滑缺陷的厚度图.
不管缺陷的周长位置如何,缺陷重建的准确性都保持不变.
该方法对位于曲外接线附近的缺陷表现出特别高的效果.

结论:

基于FWI的GWT是一种可行且有效的技术,用于对管道曲的高分辨率壁厚监测.
这种方法比传统的局部监控技术有了显著的进步.
这项研究表明,在关键管道组件中,可以改进结构完整性评估的潜力.

关键词:

自动校准自动校准.全波形逆转 (FWI) 是指波形的全逆转.导波断层扫描指导波断层扫描是指导波断层扫描.这是一个汉恩形状的缺陷.管道曲管道曲

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