The MIIS Eprints Archive: No conditions. Results ordered -Date Deposited. 2021-08-05T15:43:21ZEPrintshttp://miis.maths.ox.ac.uk/images/sitelogo.gifhttp://miis.maths.ox.ac.uk/miis/2011-11-29T12:54:08Z2011-11-29T12:54:08Zhttp://miis.maths.ox.ac.uk/miis/id/eprint/405This item is in the repository with the URL: http://miis.maths.ox.ac.uk/miis/id/eprint/4052011-11-29T12:54:08ZIdentification of the Themophysical properties of FishThe composition of a food substance can be inferred (in part) from its thermal properties. These can in turn be measured using a thermal probe. In a previous Study Group the effectiveness of using a single probe was considered. The current investigation will extend this to look at optimal placings of several probes so that repeated thermal measurements are made (with associated errors), the food composition can be accurately calculated and errors in the determined composition estimated.K. ParrottC. AldridgeP. Nesvadba2011-11-29T13:09:33Z2015-05-29T20:01:46Zhttp://miis.maths.ox.ac.uk/miis/id/eprint/408This item is in the repository with the URL: http://miis.maths.ox.ac.uk/miis/id/eprint/4082011-11-29T13:09:33ZBulkhead Failure due to Flooded HoldsAn important cause of bulk carrier loss is ingress of sea water owing to cracks in the side shell as a consequence of main frame deterioration and the subsequent failure of transverse bulkheads adjacent to the flooded hold. When the hold is flooded the stresses in the bulkhead are known to exceed yield and the bulkhead to have undergone slight distortion. The vertical bulkheads are corrugated and have upper support from cross deck strips. Typical initial damages are cracks in the joint between bulkhead corrugations and deck plating due partly to corrosion. These can lead to portions of the cross deck strip becoming detached from the bulkhead. Pressure on the ship sides can then cause the bulkhead and cross deck strip to buckle, with minor and local buckles on the bulkhead leading to shear buckling of the whole structure.

The purpose of the Study Group will be an investigation of this cracking and buckling process.G.B. B.A.R. C.J. G.G.W. H.J. L.A.B. M.N.V. M.G. O.J.R. OckendonM.A. P.S. S.L. W.J.P. W.2011-11-29T13:05:49Z2015-05-29T20:01:42Zhttp://miis.maths.ox.ac.uk/miis/id/eprint/407This item is in the repository with the URL: http://miis.maths.ox.ac.uk/miis/id/eprint/4072011-11-29T13:05:49ZMicrowaving foodMicrowaving is a common means of heating and cooking a foodstu as well as being an important industrial process for heating materials such as ceramics. Whereas the physics of the latter process is well established and that of heating water easy to understand, the processes of heating foodstuffs are as yet rather poorly understood. This is because the response of a foodstuff to the energy in a microwave field depends upon many factors (such as temperature and moisture content) which depend critically on the heating process. As a result the literature on microwaving food is rather confused with poor agreement between theory and experiment. The objective of the Study Group was to obtain a model for heating a simple foodstuff such as a potato which allowed for the effects of a varying moisture content and which agreed more closely with experimental results than existing models.J. A.C.J.W. BrewardA.A. L.K. P.W. S.2011-11-29T12:57:02Z2015-05-29T20:01:38Zhttp://miis.maths.ox.ac.uk/miis/id/eprint/406This item is in the repository with the URL: http://miis.maths.ox.ac.uk/miis/id/eprint/4062011-11-29T12:57:02Z'Mud-cracking' in a Latex paint filmThicker coatings of paint made up of water, polymer latex, titanium dioxide pigment and with no organic solvents, exhibit mud-cracking when they dry. This is due to a build up of stress in the drying film. There is a need to develop a theory of mud mechanics which shows the role of the pigment volume concentration in the paint thickness and the latex viscosity in developing stress in the film.

The aim is to reduce the build up of stress in the drying film to avoid crack initiation.B. vd. FliertC.P. Please2011-11-29T12:47:34Z2015-05-29T20:01:33Zhttp://miis.maths.ox.ac.uk/miis/id/eprint/404This item is in the repository with the URL: http://miis.maths.ox.ac.uk/miis/id/eprint/4042011-11-29T12:47:34ZThe Manufacture of Continuous Electrodes using Paste BriquettesIn electrical smelting, current is supplied through electrodes which are gradually consumed. These electrodes are made of paste which flows under increasing temperature. The paste is charged by adding paste briquettes on top of the electrode which soften and flow to form a dense fluid which is baked to form the solid electrode. When producing electrodes rapidly the softening/flow process can be incomplete due to trapped air leading to breakages.

The objective of the Study Group is a mathematical analysis of this process which will allow a transfer of laboratory measurements to conditions for real electrodes.A.D. FittP.D. Howell2011-11-29T12:45:14Z2015-05-29T20:01:29Zhttp://miis.maths.ox.ac.uk/miis/id/eprint/403This item is in the repository with the URL: http://miis.maths.ox.ac.uk/miis/id/eprint/4032011-11-29T12:45:14ZThermo-Electric Problem in the SÃ¸derberg ElectrodeCurrent is supplied to a SÃ¸derberg electrode by copper clamps that are attached to the steel casing around the electrode. From this casing steel fins run into the paste to enhance current transport, creating a non-uniform distribution of current and temperature within the paste.

The aim for the Study Group is to determine whether a homogenisation approach can be used to reduce the problem to one with axial symmetry.S.J. ChapmanP. DellarA.D. FittL. HerraizS.D. HowisonJ. KingA.A. LaceyC. NikolopoulosK. ParrottC.P. Please2011-11-29T12:40:49Z2015-05-29T20:01:25Zhttp://miis.maths.ox.ac.uk/miis/id/eprint/402This item is in the repository with the URL: http://miis.maths.ox.ac.uk/miis/id/eprint/4022011-11-29T12:40:49ZOptimal Blower DesignIn some spinning processes, split blowers are used to transport and stretch filaments. Pressurised air is forced through a nozzle to create a high speed flow. The objective of the study is to minimise the pressurised air while maintaining sufficient frictional forces on the surface of the filaments. Probably one of the main variables is the geometry of the blower.T. LattimerJ.R. OckendonH. Ockendon2011-11-29T12:37:45Z2015-05-29T20:01:22Zhttp://miis.maths.ox.ac.uk/miis/id/eprint/401This item is in the repository with the URL: http://miis.maths.ox.ac.uk/miis/id/eprint/4012011-11-29T12:37:45ZConvergence of Risk Estimates Obtained from Highly Skewed DistributionsIn radiological exposure, risk is the probability of a serious health effect as a result of that exposure. This is proportional to the expectation of annual dose. The aim of probability safety assessment is to estimate the estimated dose as a function of time, however there is no expert opinion of the PDF of the dose information on which comes from the observed distribution. Errors arise in estimations when this is highly skewed.

The problem is to estimate this error given various assumptions on the form of the distribution.D. DraperC. McKailD.J. Allwright