Investigation on Propagation Characteristics of Elastic Wave in Different Wear Rail

被引：0
|
作者：
Chen R. [1 ,2 ]
Jiang W. [1 ,2 ]
Li H. [1 ,2 ]
Xu J. [1 ,2 ]
Hu C. [1 ,2 ]
Tian Y. [3 ]
机构：
[1] Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu
[2] School of Civil Engineering, Southwest Jiaotong University, Chengdu
[3] Chengdu Yijian Engineering Consulting Agency Co., Ltd., Chengdu
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2021年 / 57卷 / 18期
关键词：
Dispersion characteristics; Elastic wave; Semi-analytical finite element method; Wave structures; Worn rail;
D O I：
10.3901/JME.2021.18.015
中图分类号：
学科分类号：
摘要：
If the rail wear occurs in the main line, which can affect the elastic wave propagation and further influence the elastic wave identification of the damage. The semi-analytical finite element method is verified by field tests. Based on the theoretical method, the dispersion curves of five types rails with different vertical wear rates are obtained, and the dispersion characteristics of the rails after wear are compared with the wave structures. The wave structure characteristics that are sensitive and insensitive to vertical wear are analyzed based on the variation of group velocity, and verified by simulation. The results show that the frequency of intersecting or deflection of dispersion curves near the same frequency increases with the increase of vertical wear under different vertical wear conditions, while the phase velocity at the intersecting or deflection of the curves is opposite. The insensitive wave mode propagates mainly through the rail waist and the rail bottom, while the sensitive wave mode propagates mainly through the rail head or the full section. The simulation results show that the vertical vibration wave mode of rail head is sensitive to rail vertical wear, and the influence of rail wear should be considered when selecting this wave mode to detect rail defects. © 2021 Journal of Mechanical Engineering.
引用
收藏
页码：15 / 22
页数：7
相关论文
共 16 条
  • [1] AALAMI B., Waves in prismatic guides of arbitrary cross section, Journal of Applied Mechanics, 40, 4, pp. 1067-1072, (1973)
  • [2] HAYASHI T, SONG W J, ROSE J L., Guided wave dispersion curves for a bar with an arbitrary cross-section, a rod and rail example, Ultrasonics, 41, 3, pp. 175-183, (2004)
  • [3] SALE M, RIZZO P, MARZANI A., Semi-analytical formulation for the guided waves-based reconstruction of elastic moduli, Mechanical Systems and Signal Processing, 25, 6, pp. 2241-2256, (2011)
  • [4] SETSHEDI I I, LOVEDAY P W, LONG C S, Et al., Estimation of rail properties using semi-analytical finite element models and guided wave ultrasound measurements, Ultrasonics, 96, pp. 240-252, (2019)
  • [5] LOVEDAY P W, LONG C S, RAMATLO D A., Mode repulsion of ultrasonic guided waves in rails, Ultrasonics, 84, 1, pp. 341-349, (2018)
  • [6] SANDERSON R M., The application of finite element modelling to guided wave testing systems, American Institute of Physics. Non-Destructive Testing and Condition Monitoring, pp. 359-363, (2003)
  • [7] HE Cunfu, LIU Qingqing, JIAO Jingpin, Et al., Propagation characteristics of ultrasonic guided wave in rails based on vibration modal analysis, Journal of Vibration and Shock, 33, 3, pp. 9-13, (2014)
  • [8] WANG Rong, YU Zujun, ZHU Liqiang, Et al., Thermal stress estimation algorithm for seamless rail based on guided wave multi-mode fusion, Journal of Railway, 40, 6, pp. 136-143, (2008)
  • [9] LOVEDAY P W., Semi-analytical finite element analysis of elastic waveguides subjected to axial loads, Ultrasonics, 49, 3, pp. 298-300, (2009)
  • [10] LOVEDAY P W, PAUL D W., Guided wave propagation as a measure of axial loads in rails, Proceedings of SPIE, 7650, pp. 1-8, (2010)
12