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总聚焦方法,反向时间迁移和超声波成像的全波形逆转的定量比较

Tim Bürchner¹, Simon Schmid², Lukas Bergbreiter²

¹Technical University of Munich, TUM School of Engineering and Design, Chair of Computing in Civil and Building Engineering, Arcisstrasse 21, Munich, 80333, Germany.

|June 15, 2025

概括

这项研究比较了用于非破坏性测试的超声波成像方法. 一个两步的全波形反转 (FWI) 框架表明,与总聚焦方法 (TFM) 和反向时间迁移 (RTM) 相比,优越的缺陷重建.

科学领域:

非破坏性测试是指非破坏性测试.
超声波成像超声波成像
材料科学是一种材料科学.

背景情况:

使用压电元件的分相阵列超声波对于准确检测缺陷至关重要.
全矩阵捕获 (FMC) 使用所有源接收器组合来增强数据采集.
总聚焦方法 (TFM) 仅使用第一个到达的波,限制了复杂缺陷的表征.

研究的目的:

为了比较总聚焦方法 (TFM),反向时间迁移 (RTM) 和完整波形反转 (FWI) 的性能,用于缺陷重建.
评估不同缺陷细分方法的有效性.
用AUPRC,AUROC和F1-score等指标量化评估重建的准确性.

主要方法:

使用了来自六个样本的全矩阵捕获 (FMC) 数据集,这些样本具有圆形缺陷或Y形口.
应用总聚焦方法 (TFM),反向时间迁移 (RTM) 和两步全波形逆转 (FWI) 框架.
对重建的缺陷图像进行了定性视觉评估和定量评估.

主要成果:

两步全波形逆转 (FWI) 框架在大多数测试样本中取得了最佳的定性和定量结果.
与TFM和RTM相比,FWI在重建复杂形状缺陷方面表现优异.
研究了细分方法来完善定量评估.

结论:

一个两步FWI框架是非常有效的准确的缺陷重建在非破坏性测试使用阶段阵列超声波.
与TFM和RTM相比,FWI在描述复杂缺陷方面提供了显著的优势.
该研究提供了先进的超声波成像技术的全面比较.

关键词:

完全的矩阵捕获.完全的波形逆转.阶段式数组是一个阶段式数组.重建重建的重建工作反向时间迁移.总聚焦方法总聚焦方法超声波超声波是指超声波的使用.模拟波浪的模拟方法

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