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Variation of CD Shrinkage on Paper Machines

In common with many other materials, paper tends to shrink as it dries. Although every attempt is made to restrain paper, some shrinkage occurs on all paper machines in the direction perpendicular to that of manufacture and this shrinkage is always much higher at the edges of the machine than in the centre. Measurement of the profile of this cross-machine shrinkage is possible using the fast Fourier transform to locate and measure periodic elements imprinted by the filtration fabrics used during formation of the paper web.

This project will build on the research group's world-leading experience of measuring and analysing paper machine CD shrinkage profiles to investigate in detail aspects of shrinkage profile shape.

The project will involve use of computers for image and data analysis but specific experience is not required.

  1. S. M. Hoole, S. J. I'Anson, M. Ora, T. N. Ashworth, D. Briggs, B. R. Phillips, R. W. Hoyland, "CD Shrinkage Profiles of Paper - Experiments on a Commercial Paper Machine", Paper Technology 40 (10):63 (1999).
  2. R. P. A. Constantino, S. J. I'Anson  and W. W. Sampson, "The effect of machine conditions and furnish properties on paper CD shrinkage profile",  In Advances in Paper Science and Technology, Trans. XIIIth Fund. Res. Symp. Cambridge, 2005, (S. J. I'Anson, ed.), pp 283–306, FRC, Manchester, 2005. ISBN: 0 9545272 3 2.

Eligibility

Home/EU 2:1 or equivalent in physics, engineering, materials science or other numerate discipline

Funding

Home/EU Fees + EPSRC level stipend

Start Date

As soon as possible

Reference

phd/07/SIA/01

How to Apply

You can apply for postgraduate opportunities online quoting the reference code, or, for further information, please contact:

Dr Stephen J I'Anson
Email: steve.ianson@manchester.ac.uk
Tel: +44 (0)161 306 8846

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