Experimental investigation of the thermal contact resistance in shrink fit assemblies with relevance to electrical machines

2014 ◽  
Author(s):  
R. Camilleri ◽  
M.D. McCulloch ◽  
D.A. Howey
Keyword(s):  
Experimental Investigation ◽  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Electrical Machines ◽  
Shrink Fit

Experimental Investigation of Contact Resistance Across Pressed Lead and Aluminum Contact in Vacuum

2000 ◽  
Author(s):  
Xiao Ma ◽  
Jamil A. Khan ◽  
Curtis A. Rhodes ◽  
Allen Smith ◽  
L. Larry Hamm
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Cooling Water ◽  
External Pressure ◽  
Interface Temperature ◽  
Pressure Surface ◽  
Increasing Temperature

Abstract In a proposed nuclear application (production of Tritium using an accelerator, Accelerator Production of Tritium (APT)) lead is proposed to be used as a shield in the blanket module. This lead will be encased in aluminum cladding. The energy transfer rate from the lead to the cooling water will be a function of the thermal contact resistance (TCR) between lead and aluminum. Presently, data for contact resistance for this application does not exists in the literature. An experimental investigation has been conducted to determine the thermal contact resistance between lead and aluminum in vacuum. In this study we investigate the effect of pressure, surface roughness and interface temperature on the contact resistance. The experimentally determined range of contact resistance was found to be from 3.74×10−4K-m2/W to 11.45×10−4K-m2/W at 100°C∼200°C under 120∼370psi (0.827∼2.551MPa). The contact resistance increases to 168×10−4K-m2/W at small external pressure of 2.0∼3.9psi (0.013∼0.027MPa). The contact resistance decreases with increasing in contact pressure. Interface temperature and surface roughness do not affect the contact resistance significantly. There is a slight increase in contact conductance with increasing temperature. The experimental results provide contact resistance data, which should be a good reference for the APT design evaluation.

Experimental investigation on the thermal contact resistance between gold coating and ceramic substrates

2001 ◽  
Vol 389 (1-2) ◽  
pp. 167-172 ◽  
Author(s):  
A. Lahmar ◽  
T.P. Nguyen ◽  
D. Sakami ◽  
S. Orain ◽  
Y. Scudeller ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Gold Coating ◽  
Ceramic Substrates
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