Van der Pauw measurement of metal fibre orientation in a plastic-metal composite
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Authors
Kinsler, Mark R.
Patton, Joyce
Hmurcik, Lawrence V.
Issue Date
1988-04
Type
Article
Language
en_US
Keywords
Engineering , Polymer sciences , Industrial chemistry , Chemical engineering , Characterization and evaluation materials , Mechanics
Alternative Title
Abstract
Stainless steel fibres in ABS plastic form a composite with an anisotropic resistivity. Samples are rectangular shapes with uniform thickness. By assuming two principal resistivities and by using van der Pauw's technique, we findϱ 2 =ϱ x ϱ y . For rectangular samples, field theory determinesϱ y /ϱ x and hence fibre direction. Results for three sample geometries agree with the theoretical predictions of the fibre patterns and with X-ray data. Samples formed by a centre-sprue feed are the best for fabricating large, uniform samples, while samples with a large length-to-width ratio have the most uniform metal density and fibre orientation. Resistivity was also measured by the more-common two-probe technique. Results correlate well to van der Pauw data, with 95% confidence.
Description
The final publication is available at www.springerlink.com
Citation
M. Kinsler, L. V. Hmurcik, J. Patton, "Van der Pauw measurement of metal fibre orientation in a plastic-metal composite," Journal of Materials Science, vol. 23 no. 4, Apr. 1988.
Publisher
Chapman and Hall Ltd.