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Characterization of wear debris generated in accelerated rolling-element fatigue tests
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jones Jr., W. R. Parker, R. J. |
| Copyright Year | 1978 |
| Description | A ferrographic analysis was used to determine the types and quantities of wear debris generated during accelerated rolling contact fatigue tests. The five-ball rolling contact fatigue tester was used. Ball specimens were made of a corrosion resistant, high-temperature bearing steel. The lubricant was a superrefined naphthenic mineral oil. Conditions included a maximum Hertz stress of 5.52 10 to the 9th power Pa and a shaft speed of 10,000 rpm. Four types of wear debris were observed: (1) normal rubbing wear particles, (2) fatigue microspall particles, (3) spheres, and (4) friction polymer deposits. The characterization of wear debris as a function of time was of limited use in predicting fatigue failures in these accelerated tests. |
| File Size | 1211926 |
| Page Count | 29 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780013527 |
| Archival Resource Key | ark:/13960/t89h0fr7k |
| Language | English |
| Publisher Date | 1978-04-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Fatigue Tests Corrosion Resistance Hardness Tests Wear Mineral Oils Performance Prediction Spectroscopic Analysis Cracking Fracturing Ferromagnetism Balls Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
