Rail Surface Defect and Wear Inspection

Rail heads are regularly exposed to heavy loads from long train consists as well as localized stress associated with both acceleration and breaking. These stresses deform the surface of the rails resulting in both wear as well as the formation of discontinuities such as cracks, engine burn, localized surface collapse and more.

While rail head wear and condition inspection typically requires a separate dedicated inspection system, Pavemetrics’ LRAIL is able to perform these tasks simultaneous with other important tasks such as clip and spike inspection, ballast inspection and cross tie inspection for example.

The LRAIL uses a combination of Artificial Intelligence and traditional image processing to analyze both 2D and 3D data in order to detect and quantify open rail surface defects as well as measure top, corner and side of rail wear. Rail wear measurements can be made for both standard rail profile as well as grooved (metro) rail.

Additionally, through the LRAIL’s Change Detection algorithms, changes in rail surface condition can be automatically detected and reported pointing track maintenance crews to the portions of the network that are most in need of attention.

Standard

49 CFR § 213.233 – Track inspections

Related Articles

Laser Triangulation for Track Change and Defect Detection
Authors: Federal Railroad Administration

Laser Triangulation for Track Change and Defect Detection
Authors: Federal Railroad Administration