Electrical Contact Performance Degradation in Electromechanical Components

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Description

Detailed materials evaluations have been performed for MC2969 Intent Stronglink switch monitor circuit parts returned from the field out of retired weapon systems. Evaluations of local contact resistance, surface chemical composition and surface roughness and wear have been determined as a function of component level contact loop resistance testing position. Several degradation mechanisms have been identified and correlated with the component level measurements. Operational degradation produces surface smoothing and wear with each actuation of the monitor circuit, while aging degradation is observed in the segregation of contaminant species and alloy constituent elements to the surface in the stressed wear regions.

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5 pages

Creation Information

Peebles, D.E.; Dugger, M.T.; Neff, S.G.; Sorroche, E.H.; Robinson, J.A.; Fanska, J. et al. March 23, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Detailed materials evaluations have been performed for MC2969 Intent Stronglink switch monitor circuit parts returned from the field out of retired weapon systems. Evaluations of local contact resistance, surface chemical composition and surface roughness and wear have been determined as a function of component level contact loop resistance testing position. Several degradation mechanisms have been identified and correlated with the component level measurements. Operational degradation produces surface smoothing and wear with each actuation of the monitor circuit, while aging degradation is observed in the segregation of contaminant species and alloy constituent elements to the surface in the stressed wear regions.

Physical Description

5 pages

Notes

OSTI as DE00005041

Source

  • 22nd Aging, Compatibility and Stockpile Stewardship Conference, Oak Ridge, TN (US), 04/27/1999--04/29/1999

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  • Report No.: SAND99-0698C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 5041
  • Archival Resource Key: ark:/67531/metadc690852

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Creation Date

  • March 23, 1999

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 12, 2016, 2:02 p.m.

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Peebles, D.E.; Dugger, M.T.; Neff, S.G.; Sorroche, E.H.; Robinson, J.A.; Fanska, J. et al. Electrical Contact Performance Degradation in Electromechanical Components, article, March 23, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc690852/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.