Fatigue performance of AAR class A railroad wheel steel at ambient and elevated temperatures

McKeighan, P C; McMaster, F J; Gordon, J E; John A. Volpe National Transportation Systems Center (U.S.); Southwest Research Institute; United States. Federal Railroad Administration

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Fatigue performance of AAR class A railroad wheel steel at ambient and elevated temperatures

2005-11-05
By McKeighan, P C ; McMaster, F J ; Gordon, J E

[PDF-2.50 MB]

English

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Creators:

McKeighan, P C ; McMaster, F J ; Gordon, J E

McKeighan, P C ; McMaster, F J ; Gordon, J E Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.) ; Southwest Research Institute ; United States. Federal Railroad Administration

John A. Volpe National Transportation Systems Center (U.S.) ; Southwest Research Institute ; United States. Federal Railroad Administration Less -
Subject/TRT Terms:

[+]

Atmospheric Temperature Fatigue Limit Fatigue Tests Heat Convection High Temperature Railroad Cars Sine Curves Specimens Steel Stress Ratio Temperature Endurance Tests Tire Treads Wheels
Publication/ Report Number:

IMECE2005-82519
Resource Type:

Proceedings
TRIS Online Accession Number:

972581
Corporate Publisher:

American Society of Mechanical Engineers
NTL Classification:

NTL-RAIL TRANSPORTATION-RAIL TRANSPORTATION;NTL-RAIL TRANSPORTATION-Rail Safety;NTL-SAFETY AND SECURITY-Rail Safety;
Abstract:

This paper reports on tests to measure the effect of temperature on fatigue performance of railroad wheel steel. Classical stress-life (S-N) curves were developed for AAR Class B wheel steel with specimens removed from the tread areas of an as-forged railcar wheel. The specimen geometry was a standard hourglass fatigue test specimen with a low stress concentration of 1.05. Fatigue testing was performed at stress ratios of -1.0, 0.05, 0.5 and 0.7. Testing was performed at ambient, 500 deg F, and 1000 deg F using high current resistance or convection methods. Endurance limit data was obtained for all R-ratios, although for the 1000 deg F condition, there did not appear to be a clear endurance limit transition. The sines parameters, A and alpha, were estimated using these endurance limit data.
Format:

PDF
Collection(s):

Federal Railroad Administration Volpe Center
Main Document Checksum:

[+]

urn:sha256:73366b647762b9f29af93120824b9daad642bafe3c0826d9a5b310e824c0323d
Download URL:

https://rosap.ntl.bts.gov/view/dot/8989/dot_8989_DS1.pdf
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Fatigue performance of AAR class A railroad wheel steel at ambient and elevated temperatures

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