Computer Science
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.540..343m&link_type=abstract
In: Proceedings of the 9th International Symposium on Materials in a Space Environment, 16-20 June 2003, Noordwijk, The Netherla
Computer Science
Space Environment, Materials, Ground Testing
Scientific paper
This paper shall present a survey on a vacuum or space related effect, which is referred to as "cold welding", "adhesion" or "sticking". It refers to "welding or sticking" of contacting bodies which shall open vertically (no sliding), i.e. acc. to ECSS "separable contact surfaces". Starting from a reported failure on a spacecraft, test facilities were developed and a verification study was done to show relevance between the test results and the reported failure. In the following, a standardised test method was set-up, in order to compare different space relevant materials and coatings for their tendency to cold welding. Within several studies, common experience and numerical results were gained on space relevant combinations of materials and coatings. Based on this knowledge, recommendations for use of certain combinations will be drawn. As example, stainless steel SS17-7ph will have to be avoided or several finishes on Al AA7075 can be recommended (e.g. hard anodising).
Dunn Barrie D.
Merstallinger A.
Semerad E.
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