Wang Wenjie, Li Zhao, Lee Pedro, Murch Ross
Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.
Department of Civil and Natural Resources Engineering, University of Canterbury, Christchurch, New Zealand.
J Acoust Soc Am. 2020 May;147(5):EL415. doi: 10.1121/10.0001275.
Estimating acoustic wave dispersion in pipelines filled with water is studied using theoretical analysis and laboratory experiments. Previous methods for experimentally estimating the dispersion of the propagating modes require multiple spatial measurements, making it difficult to measure. In this work the authors propose a method that utilizes only one spatial measurement using a singular value decomposition based approach. Experimental results of a cylindrical high-density polyethylene pipeline are used to demonstrate the usefulness of the approach. The approach could be useful in estimating the size and material properties of pipelines.
利用理论分析和实验室实验研究了充满水的管道中声波频散的估计问题。以往通过实验估计传播模式频散的方法需要进行多次空间测量，这使得测量变得困难。在这项工作中，作者提出了一种基于奇异值分解的方法，该方法仅利用一次空间测量。以圆柱形高密度聚乙烯管道的实验结果来证明该方法的有效性。该方法在估计管道尺寸和材料特性方面可能会有所帮助。
