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

Visualisation and the size distribution of contact spots at a real un-dismantled electrical contact interface
Visualisation and the size distribution of contact spots at a real un-dismantled electrical contact interface
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
0022-3727
085304-[7pp]
Swingler, J.
c6e2a49e-fadd-4f38-99f7-0ee1e2c92fac
Lalechos, A.
e0137633-f8bf-4f49-abe4-49b64e4082c3
Swingler, J.
c6e2a49e-fadd-4f38-99f7-0ee1e2c92fac
Lalechos, A.
e0137633-f8bf-4f49-abe4-49b64e4082c3

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).

Record type: Article

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

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Published date: March 2009

Identifiers

Local EPrints ID: 71790
URI: http://eprints.soton.ac.uk/id/eprint/71790
ISSN: 0022-3727
PURE UUID: 9e7a1798-873d-4af3-a32b-a3ea9606bb1b

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Date deposited: 07 Jan 2010
Last modified: 13 Mar 2024 20:45

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Contributors

Author: J. Swingler
Author: A. Lalechos

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