Past Industrial and Interdisciplinary Workshops

3 December 2010
10:00
Valerie Livina
Abstract
We apply the novel method of potential analysis to study climatic records. The method comprises (i) derivation of the number of climate states from time series, (ii) derivation of the potential coefficients. Dynamically monitoring patterns of potential analysis yields indications of possible bifurcations and transitions of the system. The method is tested on artificial data and then applied to various climatic records [1,2]. It can be applied to a wide range of stochastic systems where time series of sufficient length and temporal resolution are available and transitions or bifurcations are surmised. A recent application of the method in a model of globally coupled bistable systems [3] confirms its general applicability for studying time series in statistical physics. [1] Livina et al, Climate of the Past, 2010. [2] Livina et al, Climate Dynamics (submitted) [3] Vaz Martins et al, Phys. Rev. E, 2010
  • Industrial and Interdisciplinary Workshops
19 November 2010
10:00
to
13:00
Various
Abstract
<p>This is the session for industrial sponsors of the MSc in MM and SC to present the project ideas for 2010-11 academic year. Potential supervisors should attend to clarify details of the projects and meet the industrialists. </p> The schedule is 10am: Introduction; 10:05am David Sayers for NAG; 10:35am Andy Stove for Thales.
  • Industrial and Interdisciplinary Workshops
5 November 2010
09:00
to
11:00
Steve Roberts and his group
Abstract
PLEASE NOTE THAT THIS WORKSHOP IS TO BE HELD IN 21 BANBURY ROAD BEGINNING AT 9AM! \\ We will give three short presentations of current work here on small scale mechanics : 1) micron-scale cantilever testing and nanoindentation - Dave Armstrong 2) micron-scale pillar compression – Ele Grieveson 3) Dislocation loop shapes – Steve Fitzgerald These should all provide fuel for discussion, and I hope ideas for future collaborative work.\\ The meeting will be in the committee room in 21 Banbury Rd (1st floor, West end).
  • Industrial and Interdisciplinary Workshops
29 October 2010
11:45
John Allen and Angela Mihai
Abstract

John Allen: The Bennett Pinch revisited

Abstract: The original derivation of the well-known Bennett relation is presented. Willard H. Bennett developed a theory, considering both electric and magnetic fields within a pinched column, which is completely different from that found in the textbooks. The latter theory is based on simple magnetohydrodynamics which ignores the electric field.

The discussion leads to the interesting question as to whether the possibility of purely electrostatic confinement should be seriously considered.

Angela Mihai: A mathematical model of coupled chemical and electrochemical processes arising in stress corrosion cracking

Abstract: A general mathematical model for the electrochemistry of corrosion in a long and narrow metal crack is constructed by extending classical kinetic models to also incorporate physically realistic kinematic conditions of metal erosion and surface film growth. In this model, the electrochemical processes are described by a system of transport equations coupled through an electric field, and the movement of the metal surface is caused, on the one hand, by the corrosion process, and on the other hand, by the undermining action of a hydroxide film, which forms by consuming the metal substrate. For the model problem, approximate solutions obtained via a combination of analytical and numerical methods indicate that, if the diffusivity of the metal ions across the film increases, a thick unprotective film forms, while if the rate at which the hydroxide produces is increased, a thin passivating film develops.

  • Industrial and Interdisciplinary Workshops

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