A new small sample test configuration for fatigue life estimation of overhead contact wires-Reference-Cited by-同舟云学术

A new small sample test configuration for fatigue life estimation of overhead contact wires

Published:2022-08-03 Issue:4 Volume:237 Page:438-444
ISSN:0954-4097
Container-title:Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit

Author:

Sunar Özgün¹^ORCID,Fletcher David²^ORCID

Affiliation:

1. Department of Railway Systems and Technologies, Eskisehir Technical University, Eskisehir, Turkey

2. Department of Mechanical Engineering, University of Sheffield, Sheffield, UK

Abstract

Fatigue in railway overhead line electrification (OLE) contact wires can cause sudden catastrophic failures. The contact wire interacting with the pantograph both mechanically and electrically is subjected to tension and repetitive bending due to the pantograph contact force. Recently, fatigue failures of OLE have risen in prominence with increases in train speed. To address this a new fatigue test configuration has been developed. The study focuses on a method for testing the wire as a component enabling fatigue life evaluation of worn wires, or exploring the effect of installation damage, through component level evaluation of crack initiation and propagation. The new test configuration places a 400 mm-length contact wire in a combination of bending and pretension with realistic boundary conditions replicating service conditions for longer spans. The results are presented in a strain-life format to provide data for a wide range of potential service conditions.

Funder

Network Rail Infrastructure Limited

Furrer + Frey

Turkish Ministry of National Education

Publisher

SAGE Publications

Subject

Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/09544097221116531

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