Validating electromagnetic walking stick rail surface crack measuring systems : final report.

Magel, Eric E.

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Validating electromagnetic walking stick rail surface crack measuring systems : final report.

2016-06-01
By Magel, Eric E.

File Language:

English

Details

Creators:

Magel, Eric E.
Corporate Creators:

National Research Council Canada
Corporate Contributors:

United States. Federal Railroad Administration. Office of Research, Development, and Technology
Subject/TRT Terms:
Publication/ Report Number:

AST-R-LR-0102 ; DOT/FRA/ORD-16/23
Resource Type:

Tech Report
Geographical Coverage:

Canada
Edition:

Final report
Corporate Publisher:

United States. Federal Railroad Administration. Office of Research, Development, and Technology
Abstract:

A series of field studies were undertaken to evaluate electromagnetic walking stick systems and their ability to measure the depth ; of damage from surface breaking cracks. In total, four railroads, and four suppliers participated in the project. The walking sticks ; were able to determine whether cracks are present and, after multiple runs, whether crack length is increasing or declining. None ; of the evaluated units were able to accurately quantify crack depth. While the crack depth predictions most often exceeded the ; “measured/real” values, sometimes by 200 or 300%, the systems can determine where along the track (and where across the ; railhead) that cracking is present. This information may be useful for planning of rail grinding, monitoring and trending the ; progress in reducing and eliminating cracks, identifying clusters of damage at high resolution and point to localized problems with ; track geometry or other errors. Lastly these tools could be used to qualitatively evaluate the effectiveness of, for example, friction ; management, improved profiles and steels in mitigating surface fatigue.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/31365/dot_31365_DS1.pdf
File Type:

[PDF - 7.88 MB]
Collection(s):

Federal Railroad Administration
Main Document Checksum:

urn:sha256:d168ee1497ffac6719274a97dd5b1fee4e75a7cc1e805f48cdadf1d1531e0848

File Language:

English

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