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Ferrographic analysis of wear debris generated in accelerated rolling element fatigue testsFerrographic analysis was used to determine the types and quantities of wear particles generated during accelerated rolling contact fatigue tests. The NASA five-ball rolling contact fatigue tester was used. Ball specimens were made of AMS 5749, a corrosion-resistant high-temperature bearing steel. The lubricant was a super-refined naphthenic mineral oil. Conditions included a maximum Hertz stress of 5.52 billion Pa and a shaft speed of 10,000 rpm. Four types of wear particles were observed: normal rubbing wear particles, fatigue spall particles, spheres, and friction polymer.
Document ID
19780044516
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jones, W. R., Jr.
(NASA Lewis Research Center Cleveland, OH, United States)
Parker, R. J.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
October 1, 1977
Subject Category
Mechanical Engineering
Meeting Information
Meeting: Joint Lubrication Conference
Location: Kansas City, MO
Country: US
Start Date: October 3, 1977
End Date: October 5, 1977
Sponsors: American Society of Mechanical Engineers, American Society of Lubrication Engineers
Accession Number
78A28425
Distribution Limits
Public
Copyright
Other

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