Visualisation and the size distribution of contact spots at a real un-dismantled electrical contact interface


Swingler, J. and Lalechos, A. (2009) Visualisation and the size distribution of contact spots at a real un-dismantled electrical contact interface. Journal of Physics D: Applied Physics, 42, (8), 085304-[7pp]. (doi:10.1088/0022-3727/42/8/085304).

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Description/Abstract

An electrical contact interface is visualized by rendering 'contact maps' from x-ray computer tomography images without the need for dismantling the specimens. The contact maps consist of approximately 1500 × 1500 pixels with each pixel relating to a 8.0 µm × 8.0 µm area at the interface. The specimens consist of bolting a cable lug to a printed circuit board at various contact normal forces between 0.8 and 3.2 kN. Quantitative analysis of the contact maps gives values for the mechanical area of contact and the size distribution of the contact spots. The size distribution of the spots shows a fractal behaviour analogous to the size distribution of islands on Earth. Data on the spot size distribution of the electrical contact interface are presented. The contact maps also give information on the geometry of contact spots and their spatial distribution over the apparent area of contact

Item Type: Article
ISSNs: 0022-3727 (print)
Related URLs:
Subjects: T Technology > TJ Mechanical engineering and machinery
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Electro-Mechanical Engineering
ePrint ID: 71790
Date Deposited: 07 Jan 2010
Last Modified: 27 Mar 2014 18:51
URI: http://eprints.soton.ac.uk/id/eprint/71790

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