NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Status of Understanding for Bearing MaterialsThe structural materials and potential failure modes for high technology aircraft gas turbine bearings are reviewed. Among the failure modes discussed for iron-base through-hardened bearing materials are fatigue, surface distress, and corrosion. It is shown that the sub-surface initiated rolling-contact fatigue failure mode is reasonably well understood and in most cases can be controlled by proper material selection and design. Current bearing materials provide long life and high reliability in existing applications. A new generation of materials are being developed which will provide improved fracture toughness, better corrosion resistance, and a further extension of bearing fatigue life. Bearing problems due to surface distress, caused by a variety of surface and near surface anomalies, are less well understood. This area will require the implementation of an interdisciplinary effort to improve the level of understanding of metallic surface-lubricant reactions and interactions.
Document ID
19840016992
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
E N Bamberger
(General Electric (United States) Boston, Massachusetts, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: Tribology in the 80's: Volume 2-Sessions 5 to 8
Publisher: National Aeronautics and Space Administration
Subject Category
Metals And Metallic Materials
Meeting Information
Meeting: International Conference in Tribology in the 80's
Location: Cleveland, OH
Country: US
Start Date: April 18, 1983
End Date: April 21, 1983
Sponsors: National Aeronautics and Space Administration
Accession Number
84N25060
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Document Inquiry

Available Downloads

There are no available downloads for this record.
No Preview Available