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| 11. |
The Antiwear Action of Zinc Di-n-Butyl Phosphate |
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A S L E Transactions,
Volume 22,
Issue 2,
1979,
Page 190-192
A. Dorinson,
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PDF (152KB)
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ISSN:0569-8197
DOI:10.1080/05698197908982916
出版商:Taylor & Francis Group
年代:1979
数据来源: Taylor
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| 12. |
Analysis of a Set of Failed Accelerated Life Test DMA Bearings |
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A S L E Transactions,
Volume 22,
Issue 2,
1979,
Page 193-199
WayneE. Ward,
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PDF (860KB)
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摘要:
The DESPIN MECHANICAL ASSEMBLY (DMA) is that mechanism by which satellite antenna platforms are despun with respect to the remainder of the vehicle in order to permit data transfer as well as navigational command and control. A major component of this assembly is a set of DMA bearings. Because of the extended duration of most satellite missions, the DMA itself as well as the individual components undergo rigorous life and accelerated life testing. On occasion, a test article fails to meet the desired or anticipated performance level. This paper describes the analysis of a set of specially fabricated DMA type bearings which experienced such a failure during an accelerated life test. Physical, chemical and pictorial evidence is presented to support the postulated cause of failure.Presented at the 33rd Annual Meeting in Dearborn, Michigan, April 17–20, 1978
ISSN:0569-8197
DOI:10.1080/05698197908982917
出版商:Taylor & Francis Group
年代:1979
数据来源: Taylor
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