Influence of Flatness and Waviness of Rough Surfaces on Surface Contact Conductance  

Oleh:

Ramamurthi, K. ; Kumar, S. Sunil

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 125 no. 3 (Jun. 2003), page 394-402.
Topik: surface; flatness; waviness; rough surface; surface contact; conductance

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.6 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

The effect of surface roughness, waviness and flatness deviations on thermal contact conductance is predicted. Threshold values of the surface parameters which do not adversely influence thermal contact conductance are determined. Flatness deviations less than ten times the average roughness and waviness less than about four times the average roughness do not significantly affect the contact conductance. A correlation is developed for contact conductance in terms of the surface parameters, the material properties and the contact pressure at the joint. Experiments are conducted in vacuum with rough, non - flat and wavy surfaces and the experimental results are demonstrated to agree well with the predictions.

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