Mobile 3D Printing of Rail Track Surface for Rapid Repairment

Mohammadi, Arman Ali; Mortazavian, Ershad; Wang, Zhiyong; Teng, Hualiang (Harry)

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Mobile 3D Printing of Rail Track Surface for Rapid Repairment

2024-09-01
By Mohammadi, Arman Ali ; Mortazavian, Ershad ; Wang, Zhiyong

File Language:

English

[PDF - 12.15 MB]

Details

Creators:

Mohammadi, Arman Ali ; Mortazavian, Ershad ; Wang, Zhiyong ; Teng, Hualiang (Harry)
Corporate Creators:

University of Nevada, Las Vegas ; University of Nevada. University Transportation Center on Improving Rail Transportation Infrastructure Sustainability and Durability
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
Subject/TRT Terms:
Publication/ Report Number:

UNLV-1
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

University of Nevada. University Transportation Center on Improving Rail Transportation Infrastructure Sustainability and Durability
Abstract:

This study reports on mobile 3D printing of rail track surface for rapid repairment. The frequent replacement of worn rails on tracks brings an immense economic burden on the railroad industry, and also causes significant interruptions to railroad operation. Restoration of worn rails via additive manufacturing, i.e., 3D printing, can considerably reduce the associated maintenance costs. The scope of this study is to utilize metal additive manufacturing (AM) technologies to repair worn rails that are used in the U.S. railway transportation system (e.g. 75-lb/yd light transit rails, or 136-lb/yd heavy freight rails). More specifically, this study aims to understand the interactive mechanisms between the deposited materials and the high-carbon rail steel to identify and alleviate the effect of the associated drawbacks, i.e., residual thermal stresses, micro pores, micro cracks, and martensite nucleation, on the resulting mechanical and metallurgical properties of the repaired rail.
Format:

PDF
Funding:

69A3551747132
Download URL:

https://rosap.ntl.bts.gov/view/dot/78343/dot_78343_DS1.pdf
File Type:

[PDF - 12.15 MB]
Collection(s):

University Transportation Centers
Main Document Checksum:

urn:sha-512:f990b17b2ece682df76ce709998f37ab1c4f970fe0c61482a2cecc1cb04c77b0d5c5029935ddc79d1d11603bc1a8133c22168f1e11bfd48114f932cab6b907e9

File Language:

English

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