نتایج جستجو برای: thermal contact resistance

تعداد نتایج: 735701  

Journal: :The Journal of the Acoustical Society of America 2003
Richard H Lyon

The equivalence between a noise source in combination with a resistance, and a thermal bath, is a part of fluctuation theory. This observation was the motivation for the author’s 1960 calculation of the power flow between modes of vibration excited by random noise sources. The resulting relation between power flow and uncoupled energy of vibration is therefore more than a thermal analogy; it is...

2013
KOJI TAKAHASHI JUN HIROTANI YUTAKA YAMADA

Interfacial thermal transport of multi-walled carbon nanotube is explored by using T-type sensor. Reliable signals of heat flow through an individual nanotube were obtained. Estimated thermal boundary resistances between the end of CNT and solid surfaces do not show the clear dependency on material that has been predicted by the diffuse mismatch model treating graphite. This discrepancy is main...

2004
Kaustav Banerjee Nathan Cheung Chenming Hu

Contact and via failure under short-duration, high current pulses has been characterized for the first time. It is shown that the critical current is strongly dependent on the pulse width, and contacthia cross section area. It is also found that for contact structures the critical current depends on the thermal conductivity of the underlying diffusion region and is independent of the electrical...

1985
J. R. BARBER

Duplex heat exchanger tubes consist oftwo concentric cylinders assembled in a state ofprestress by shrink fitting. During operation, thermal expansion changes the interface pressure and this can cause a substantial increase in the thermal resistance of the tube. Under certain circumstances, more than one steadystate solution can be obtained. In this paper, the effect of this mechanism on the ax...

Ohmic and Schottky contacts are playing a major role in the field of ZnO based electronics device fabrication. It is seen that several works have been reported on metallization scheme, contacts with this semiconducting material. But, the thickness of semiconducting material and the choosing of substrate still remain imperfect and inefficient for advanced IC technology. To estimate contact resis...

2004
M. Bahrami J. R. Culham M. M. Yovanovich G. E. Schneider

A new analytical model is developed for thermal contact resistance (TCR) of nonconforming rough surfaces. TCR is considered as the superposition of macroand microthermal resistances. The effects of roughness, load, and radius of curvature on TCR are investigated. It is shown that there is a value of surface roughness that minimizes the TCR for a fixed load and geometry. Simple correlations for ...

2003
M. Bahrami J. R. Culham M. M. Yovanovich G. E. Schneider

Thermal contact resistance (TCR) of non-conforming rough surfaces is studied and a new analytical model is developed. TCR is considered as the superposition of macro and micro components accounting for the effects of surface curvature and roughness, respectively. The effects of roughness, load and radius of curvature on TCR are investigated. It is shown that there is a value of surface roughnes...

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