01478754

Component

https://doi.org/10.3141/2374-19

http://scholar.google.com...azer&publication_year=2013

Proof-of-principle numerical simulations demonstrate the technology of ultrasonic tomography for three-dimensional (3-D) imaging of internal rail flaws. New technologies are needed to quantify internal rail flaws so as to ensure increased safety of rail transportation and reduced rail maintenance costs. The technique of ultrasonic tomography was applied to the detection of a 5% head area transverse defect in the rail head. Finite element models of ultrasonic tomographic arrays on a flawed rail were built, followed by an algorithm designed to perform the tomographic imaging of the internal rail flaw in three dimensions. The results showed excellent 3-D imaging performance. The work confirms the potential of ultrasonic tomography for the quantitative verification of internal rail flaws.

01503754

13-3975

English

pp 162–168

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309286893

Print

Figures (12) ; References (6) ; Tables (1)

Algorithms; Defects; Finite element method; Numerical analysis; Railroad rails; Simulation; Tomography; Ultrasonics

Numerical simulations; Three dimensional imaging

Maintenance and Preservation; Railroads; Safety and Human Factors; I60: Maintenance; I82: Accidents and Transport Infrastructure

TRIS, TRB, ATRI

Feb 5 2013 12:46PM

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