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基于超声波的非破坏性测试的代连贯因子 (iCF) 束形状方法

Lin Tong¹, Kunlin Wang¹, Peng Wang¹

¹State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, Chongqing, 400044, China.

|October 16, 2025

概括

本研究介绍了一种代连贯因子 (iCF) 束形成形方法,用于非破坏性测试 (NDT) 和结构健康监测 (SHM). 与传统技术相比,iCF方法显著提高了图像对比度和信号噪声比率 (SNR).

科学领域:

材料科学材料科学材料科学
信号处理信号处理
非破坏性测试 (NDT) 是一种非破坏性测试.

背景情况:

超声波束成形对于NDT和SHM至关重要.
像DAS这样的传统方法在图像对比度和SNR方面存在局限性.
需要具有成本效益和强大的梁成型技术.

研究的目的:

提出一种新的统计超声波束成形方法,使用代连贯因子 (iCF).
在NDT和SHM应用中增强图像对比和信号噪声比 (SNR).
为现有方法提供低成本,高性能的替代方案.

主要方法:

开发了一种代连贯因子 (iCF) 束形算法.
使用了最大概率和后期增强的最大 (MAP) 估计.
杆信号分布特征用于代参数优化.

主要成果:

与DAS相比,实现了两倍以上的成像对比度.
提高了超过20dB的SNR.
在检查钢结构,接,轨道和CFRP缺陷方面已证明有效.

结论:

拟议的ICF方法为NDT和SHM提供了卓越的性能和稳定性.
该方法具有较低的计算负担,并且很容易实现.
该iCF框架为NDT/SHM信号建模和参数估计提供了一个新的技术方向.

关键词:

一致性因素是一致性因素.损坏成像成像损坏成像羊羔的波浪羊羔的波浪最多是以后的时间.没有NDT的NDT.

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