Professor David Gethin
Professor
Engineering
Telephone: (01792) 295535
Room: Academic Office - A129
First
Engineering East
Bay Campus

Research contribution in the scientific areas that support net shape manufacturing and printing and coating technology.

Net shape manufacturing
Contributed significantly in developing and applying numerical and experimental techniques in casting process variants. Working closely with industry, this has led to documented experimental studies that may be used to benchmark simulation.

Recent work has also led for the first time to an integrated system to simulate the direct variant of the squeeze casting process together with an exploration of optimisation techniques that may be used to define process control.

Powder forming
One of the first to develop and apply numerical schemes to simulate the compaction process using a continuum approach and to support this by exploring methods to characterise the mechanical response of powder together with gathering pressing data for validation.

Undertaken research to develop and apply the combined discrete and finite element approach to powder forming, with emphasis on tabletting. Uniquely, this uses a discrete scheme to capture gross particle movement and a finite element analysis to compute particle deformation, including the ability to use different material models for each particle.

Work in printing and coating research is undertaken within the Welsh Centre for Printing and Coating
During the last ten years, this Centre has undertaken fundamental scientific work on high speed, high volume graphics printing processes.

This has revealed the fundamental understanding that is required to develop these processes scientifically (historically these developments were based on craft knowledge). Drawn on knowledge of thin film hydrodynamics to develop simulation methods and experiments to establish the fundamental process understanding. This work is now being taken forward with current application in the field of polymer electronics and with a future emphasis on biopolymers and biosensing devices.

Publications

  1. & Periodic electrolysis technique for in situ fouling control and removal with low-pressure membrane filtration. Desalination 433, 10-24.
  2. & Development of Graphene Nano-Platelet Ink for High Voltage Flexible Dye Sensitized Solar Cells with Cobalt Complex Electrolytes. Advanced Engineering Materials
  3. & Electrically conductive spacers for self-cleaning membrane surfaces via periodic electrolysis. Desalination 416, 16-23.
  4. & Hierarchical structures of cactus spines that aid in the directional movement of dew droplets. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374(2073), 20160110
  5. & Translucent and ductile nanocellulose-PEG bionanocomposites—A novel substrate with potential to be functionalized by printing for wound dressing applications. Industrial Crops and Products 93, 193-202.

See more...

Teaching

  • EG-362 Fluid Mechanics 3

    This module aims to generate ability to solve the problems and explain physical phenomena on the topic of fluid mechanics. The module will cover inviscid fluids, momentum and mass conservation in viscous fluids, boundary layer flows and compressible fluid flow. The module includes turbomachinery including impulse and raction turbines - pelton wheel, radial and axial flow turbines.

  • EG-365 Manufacturing Optimisation

    The module addresses business drivers and how these define the design of a manufacturing system. The module also includes application of design of experiments as a method for developing and optimising manufacturing processes and systems

Supervision

  • Performance of Printed batteries (current)

    Student name:
    PhD
    Other supervisor: Prof David Gethin
    Other supervisor: Prof Timothy Claypole
  • Advanced Manufacture by Flexography (current)

    Student name:
    EngD
    Other supervisor: Prof David Gethin
    Other supervisor: Prof Timothy Claypole
  • Advanced manufacture by printing of demonstrators based on functionalised nano materials (current)

    Student name:
    EngD
    Other supervisor: Prof David Gethin
    Other supervisor: Prof Timothy Claypole
  • Stress Whitening in pre-coated steels and the effect of nano-particulate solution to prevent stress whitening (current)

    Student name:
    EngD
    Other supervisor: Prof Cris Arnold
    Other supervisor: Prof David Gethin
  • Smart and Safe Packaging (current)

    Student name:
    PhD
    Other supervisor: Dr Davide Deganello
    Other supervisor: Prof David Gethin
  • Printed electroluminescent display technology (current)

    Student name:
    EngD
    Other supervisor: Prof David Gethin
    Other supervisor: Prof Timothy Claypole
  • Gas diffusion electrode for screen printed primary and secondary zinc-air batteries (current)

    Student name:
    PhD
    Other supervisor: Prof David Gethin
    Other supervisor: Prof Timothy Claypole
  • Study of the Influence of Calcium Carbonate in Polymers during the Additive Manufacturing process (current)

    Student name:
    PhD
    Other supervisor: Prof David Gethin
    Other supervisor: Prof Timothy Claypole
  • 'The printing of natural materials for medical applications' (current)

    Student name:
    PhD
    Other supervisor: Dr Davide Deganello
    Other supervisor: Prof David Gethin
  • Anilox cell geometries for printable electronics and flexible packaging (current)

    Student name:
    EngD
    Other supervisor: Prof David Gethin
    Other supervisor: Dr Davide Deganello
    Other supervisor: Prof Timothy Claypole
  • ''Controlling large area film formation and drying for printed Polymer OLED devices'' (awarded 2017)

    Student name:
    PhD
    Other supervisor: Prof David Gethin
    Other supervisor: Prof Timothy Claypole
  • 'Aerosol Jet Deposition for the Development of Printed Electronics' (awarded 2017)

    Student name:
    PhD
    Other supervisor: Prof David Gethin
    Other supervisor: Dr Davide Deganello