在混凝土管道中使用弹性波浪进行压缩传感
Arun P Jaganathan1, Rohollah Taslimian1
1Trenchless Technology Center (TTC), 599 Dan Reneau drive, Engineering Annex, Louisiana Tech University, Ruston, LA, US.
Ultrasonics
|May 15, 2025
概括
压缩传感 (CS) 增强了混凝土管道的非破坏性测试. 这种方法使用稀疏数组来恢复波数据,提高了表征效率和准确性.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 信号处理 信号处理
背景情况:
- 传统的表面波多通道分析 (MASW) 用于管道表征需要密集的接收器阵列,导致高元素数量和实际实施挑战.
- 估计管道特性依赖于反转分散曲线,这是一个对数据采集密度和采样限制敏感的过程.
研究的目的:
- 引入基于压缩传感 (CS) 的信号采集策略,用于混凝土管道的非破坏性表征.
- 通过使用稀疏的亚尼奎斯特采样来克服传统MASW中密集的接收器阵列的局限性.
- 为了证明从稀疏的数据集中恢复高质量的多模式分散图像,以准确地估计管道属性.
主要方法:
- 开发一个压缩传感 (CS) 信号采集策略,使用一个稀疏的,随机排列在混凝土管道上的亚尼奎斯特阵列.
- 从稀疏的数据集中恢复多模式分散图像.
- 数学反转的恢复模态曲线使用基于波理论的前向模型来计算未知的管道参数.
- 使用纵向L (n,m) 和环形Lamb类型 (CLT) 模式与合成和测量数据进行验证.
主要成果:
- 从稀疏的数据集中成功地恢复了高质量的多模式分散图像,克服了尼奎斯特采样的局限性.
- 基于CS的方法准确地估计了混凝土管道未知的几何和弹性特性.
- 结果与独立的非破坏性测试 (NDT) 方法进行了验证,证实了该方法的可靠性.
- 该方法在纵向L{n,m) 和环形Lamb类型 (CLT) 模式中都被证明是有效的.
结论:
- 压缩传感 (CS) 为使用弹性引导波的混凝土管道进行非破坏性表征提供了可行和高效的替代方案.
- 拟议的稀疏亚尼奎斯特阵列策略显著增强了传统的MASW技术,提高了数据采集和处理生产率.
- 这种方法为准确的管道属性估计提供了一种可靠的方法,适用于各种波形和数据集.
相关概念视频
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