Failure Mechanism and Accelerated Life Test Design of Space Bearing

Along with the development of space station, the reliability of long-life space motion mechanism like space bearing becomes more and more crucial. Therefore, it is important to investigate accelerated life test (ALT) schemes for long-life space bearing. In this paper, the flow chart of ALT for low-speed space bearing is proposed based on failure mechanism analysis and standards. In order to make sure that failure mechanism is consistent during accelerated tests, possible failure modes of bearing are analyzed, especially the lubrication failure. According to different lubrication states, some accelerated stresses are compared and selected. Meanwhile, the number of testing bearings should be taken into consideration, due to the fact that it plays a key role in analyzing lifespan in the ALT. Based on our analysis and discussions, an ALT scheme is formulated, which can be used as a guide for space bearing ALTs.

[1]  Luis A. Escobar,et al.  A Review of Recent Research and Current Issues in Accelerated Testing , 1993 .

[2]  Wilfredo Morales,et al.  The Preliminary Evaluation of Liquid Lubricants for Space Applications by Vacuum Tribometry , 1994 .

[3]  Yu Jin.  A Method of Accelerated Life Test for Solid-lubricated Ball Bearings of Spacecraft Mechanisms , 2008 .

[4]  C. E. Vest,et al.  Lubrication of a spacecraft mechanism using the transfer film technique , 1971 .

[5]  Robert L. Fusaro,et al.  Preventing Spacecraft Failures Due to Tribological Problems , 2001 .

[6]  William Q. Meeker,et al.  A Review of Accelerated Test Models , 2006, 0708.0369.

[7]  Gunnar Tibert,et al.  Deployable Tensegrity Structures for Space Applications , 2002 .

[8]  Steven G. VanDyk,et al.  THE ROLE OF BEARING AND SCAN MECHANISM LIFE TESTING IN FLIGHT QUALIFICATION OF THE MODIS INSTRUMENT , 2002 .

[9]  T. Spalvins,et al.  Lubrication with sputtered MoS2 films: Principles, operation, limitations , 1991 .

[10]  Yang Yongmin.  Research on Accelerated Life Test for Rolling Element Bearings , 2010 .

[11]  Hooshang Heshmat,et al.  Accelerated testing of space mechanisms , 1995 .

[12]  Liu Zhi-min.  Design and Analysis of Accelerated Life Test for Shutter Mechanism , 2012 .

[13]  Erwin V. Zaretsky,et al.  Liquid lubrication in space , 1990 .

[14]  Michael M. Khonsari,et al.  Liquid lubrication for space applications , 1993 .

[15]  H. J. Carper,et al.  EHD Film Thickness Behavior in DMA Bearings. Part I—Experimental and Computational Techniques , 1979 .

[16]  R. I. Christy.  Dry lubrication for rolling element spacecraft parts , 1982 .

[17]  G. J. Levenbach,et al.  Accelerated Life Testing of Capacitors , 1957 .

[18]  R E Schafer,et al.  ACCELERATED TESTING TECHNOLOGY , 1967 .