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一种多策略的基于空间-时间短波数量分析的混合短波重建方法,用于增强管道超声波引导波异常成像

Binghui Tang¹, Yuemin Wang¹, Ruqing Gong¹

¹College of Power Engineering, Naval University of Engineering, Wuhan 430030, China.

Sensors (Basel, Switzerland)

|August 29, 2024

概括

一种新的多策略混合稀疏重建 (MHSR) 方法改善了管道中的超声波导向 (UGW) 缺陷成像. 这种技术通过分析时空稀疏波数数据来提高异常分辨率和定位精度.

科学领域:

非破坏性测试是指非破坏性测试.
在固体中波浪的传播.
信号处理信号处理

背景情况:

超声波导向波 (UGW) 对于检测管道缺陷是非常有效的.
来自分散,模式转换和不完美的检测的连贯噪声限制了UGW成像性能.
精确的异常成像需要克服这些与噪音相关的挑战.

研究的目的:

提出一种新的方法,用于高分辨率和精确的异常成像在有缺陷的管道使用UGWs.
解决基于UGW的缺陷检测中连贯噪声所造成的局限性.
为了提高UGW测试的性能,用于结构健康监测.

主要方法:

开发一种多策略混合稀疏重建 (MHSR) 方法.
整合时空稀疏波数分析 (ST-SWA) 以提取波数分散曲线.
应用分散补偿来减轻连贯的噪声效应.
使用补偿信号进行稀疏重建成像.

主要成果:

拟议的MHSR方法显著提高了缺陷钢管中的异常成像.
通过实验验证,通过实验验证证明了更好的缺陷分辨率和定位准确性.
轴和周边缺陷位置的最低估计误差分别为10毫米和4毫米.

结论:

使用ST-SWA的MHSR方法有效地提取分散曲线,以精确地定位缺陷.
在MHSR中分散补偿成功地减轻了连贯噪声,提高了成像质量.
经过验证的方法为精确的管道结构完整性评估提供了一个有希望的方法.

关键词:

异常成像检测异常成像检测重建的重建很少,重建的重建很少.稀疏波数分析稀疏波数分析超声波导向的波浪是超声波导向的波浪.

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