Search results: Found 2

Listing 1 - 2 of 2
Sort by
Untersuchung von charakteristischen Versetzungsstrukturen und Versetzungstransportprozessen in Reibkontakten mit Versetzungsdynamik-Simulationen

Author:
ISBN: 9783731508717 Year: Pages: X, 123 p. DOI: 10.5445/KSP/1000088231 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
License:

Loading...
Export citation

Choose an application

Abstract

Plastic deformation influences the properties of tribological contacts. Therefore, it is important to understand the underlying dislocation mechanisms in tribological contacts. This work focuses on the formation mechanism of prismatic dislocation structures below an asperity and dislocation transport during sliding. Three dimensional Discrete Dislocation Dynamics simulations are conducted for a cubic face centered metal.

Die tribologischen Eigenschaften von vergoldeten elektrischen Kontakten

Author:
ISBN: 9783731501466 Year: Pages: XIV, 138 p. DOI: 10.5445/KSP/1000037554 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:02
License:

Loading...
Export citation

Choose an application

Abstract

Electrical contacts in automotive applications are exposed to thermal and vibration induced relative motion in the tribological contact. Fretting tests with an AuCo/Ni vs. Au/NiP ball to plate contact were conducted in order to describe the ongoing wear mechanisms. Furthermore, a global wear approach was chosen to quantify the overall wear. According to a predefined electrical failure criterion the connector lifetime is demonstrated in a model depending on oscillating amplitude, gold thickness and contact roughness. The electrical failure of the contact can be reduced to the wear of the gold platings leading to exposure of the nickel interlayer and consequently oxidation. Through material transfer, plowing, particle generation and the particle transport mechanisms the contact resistance increases and therefore limits the connector lifetime. The link between the lifetime models and the global wear approach allows for calculation of the lifetime when only the wear and the stress of the tribosystem are known.

Listing 1 - 2 of 2
Sort by
Narrow your search

Publisher

KIT Scientific Publishing (2)


License

CC by-sa (2)


Language

german (2)


Year
From To Submit

2019 (1)

2013 (1)

-->