Analysis of the effects of induced fields from sliding electrical contacts

2005 ◽  
Vol 41 (1) ◽  
pp. 241-245
Author(s):  
V. Thiagarajan
Keyword(s):  
Electrical Contacts ◽  
Sliding Electrical Contacts

Experimental study of sliding electrical contacts in a multi-shot railgun

2010 ◽  
Vol 22 (4) ◽  
pp. 923-926 ◽  
Author(s):  
刘传谱 Liu Chuanpu ◽  
袁伟群 Yuan Weiqun ◽  
严萍 Yan Ping ◽  
孙鹞鸿 Sun Yaohong ◽  
孙连华 Sun Lianhua
Keyword(s):  
Experimental Study ◽  
Electrical Contacts ◽  
Sliding Electrical Contacts

The Effect of Current on the Lubrication of Sliding Electrical Contacts

1972 ◽  
Vol 15 (3) ◽  
pp. 192-200 ◽  
Author(s):  
J. Fisher ◽  
K. J. Campbell ◽  
T. F. J. Quinn
Keyword(s):  
Electrical Contacts ◽  
Sliding Electrical Contacts

Influence of Surface Roughness on Friction and Contact Resistance in Sliding Electrical Contacts

2007 ◽  
Author(s):  
Dinesh G. Bansal ◽  
Jeffrey L. Streator
Keyword(s):  
Surface Roughness ◽  
Contact Resistance ◽  
Coefficient Of Friction ◽  
Electrical Contact ◽  
Electrical Current ◽  
Electrical Contacts ◽  
Sliding Electrical Contacts ◽  
The Coefficient Of Friction ◽  
Current Densities

An experiment is conducted to investigate the role of surface roughness on the coefficient of friction and contact resistance of sliding electrical contacts. A hemispherical pin is sliding along both smooth and rough 2-meter rail surface. Tests are performed at both low and moderate sliding speed and for a range of electrical current densities, ranging from 0 to about 12 GA/m2. It was found that surface roughness had a significant influence on the coefficient of friction, with the smoother surfaces exhibiting higher coefficients of friction. Contact resistance, on the other hand, did not show as strong an effect of surface roughness, except for a few parameter combinations. At the higher current densities studied (>10 GA/m2), it was found that the contact resistance values tended to be on the order of 1 mΩ, independent of load, speed and roughness. This convergence may be due to presence of liquid metal film at the interface, which established ideal electrical contact.

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