Related Experiment Video
Updated: Jun 3, 2025
10:24
Applicability Analysis of Assessment Methods for Morphological Parameters of Corroded Steel Bars
Published on: November 1, 2018
6.6K
Identification Method for Railway Rail Corrugation Utilizing CEEMDAN-PE-SPWVD.
Jianhua Liu1, Kexin Zhang1, Zhongmei Wang1
1College of Railway Transportation, Hunan University of Technology, Zhuzhou 412007, China.
Sensors (Basel, Switzerland)
|January 8, 2025
Summary
This study introduces a new method to detect rail corrugation using CEEMDAN, PE, and SPWVD. The technique accurately identifies corrugation
Area of Science:
- Mechanical Engineering
- Signal Processing
- Railway Engineering
Background:
- Rail corrugation causes vibrations and damage to vehicle-track systems.
- Accurate identification of corrugation is crucial for maintenance and safety.
- Existing methods may lack precision in determining corrugation characteristics.
Purpose of the Study:
- To propose a novel method for identifying rail corrugation.
- To accurately determine the location, wavelength, and depth of rail corrugation.
- To validate the proposed method using simulated and real-world data.
Main Methods:
- Utilized Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN) for signal decomposition.
- Employed Permutation Entropy (PE) to filter intrinsic mode functions (IMFs).
- Applied Smoothed Pseudo Wigner-Ville Distribution (SPWVD) for time-frequency analysis and corrugation depth estimation.
Main Results:
- The CEEMDAN-PE-SPWVD method successfully identified rail corrugation wavelength and depth.
- Time-frequency analysis revealed variations in corrugation severity across different locations.
- Validation with simulated and measured data confirmed the algorithm's reliability.
Conclusions:
- The proposed method offers a reliable approach for detecting and characterizing rail corrugation.
- This technique can aid in proactive maintenance and improve railway infrastructure safety.
- Further research can explore real-time implementation and integration with monitoring systems.
Keywords:
complete ensemble empirical mode decompositionrail corrugation identificationsmoothed pseudo Wigner–Ville distributiontime–frequency characteristic analysisMore Related Videos
Related Concept Videos
01:18Deformations in a Symmetric Member in Bending
161
When analyzing the deformation of a symmetric prismatic member subjected to bending by equal and opposite couples, it becomes clear that as the member bends, the originally straight lines on its wider faces curve into circular arcs, with a constant radius centered at a point known as Point C. This phenomenon helps to understand the stress and strain distribution within the member more clearly.
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
161
01:14Bending of Curved Members - Strain Analysis
128
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member...
The important part of bending analysis for such a member...
128
01:23Design of Prismatic Beams for Bending
209
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and...
209
01:11Deformation of Member under Multiple Loadings
155
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
155
01:19Degree of Curvature and Radius of Curvature
35
The degree of curvature and the radius of curvature are fundamental concepts in determining the sharpness or smoothness of a curve. The degree of curvature is a measure of how steeply a curve bends and can be determined using the chord basis or the arc basis. In the chord basis method, the degree of curvature is defined as the central angle subtended by a chord of 30.48 meters, helping in the calculation of the radius of the curve. The arc basis method defines the degree of...
35
01:18Mechanical Characteristics of Steel
393
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
393