A/Prof Adrian Sheppard

A/Prof Adrian Sheppard
Position
Head of Department
Department
Department of Applied Mathematics
Physics Education Centre
Office phone
58516
Email
Office
Applied Maths Cottages 1 30

3D phantoms for X-ray micro-tomography

"Phantoms" are objects used for performance testing and/or calibration of 3D X-ray computed tomography (CT) systems. This project involves designing, 3D printing, and subsequently imaging phantoms at the micro-CT facility of the Applied Maths department.

Dr Andrew Kingston, Dr Glenn Myers, A/Prof Adrian Sheppard, Prof Timothy Senden

Impact of surface roughness on fluid equilibribrium

Fluid flow in porous media combines the impacts of many complex phenomena: fluid properties, solid structure, and the infacial interactions between fluids and solid phases. This project aims to uncover the reasons behind some fundamental differences between experiments conducted in glass bead packs and those conducted in geologic systems (rocks).

Dr Anna Herring, A/Prof Adrian Sheppard

Intelligent 3D X-ray imaging, for improved analysis of complex 3D images.

This project will develop new methods for "intelligent" processing of 3D X-ray data (i.e. methods which use a priori information). These new methods will double as a non-traditional approach to automated image analysis; the project will compare this new approach with more traditional methods.

Dr Glenn Myers, Dr Andrew Kingston, A/Prof Adrian Sheppard

High-density artifact correction in x-ray micro-tomography

High-density objects in specimens of interest (e.g., metal-pins in biological specimens), can cause significant quality degradation of 3D images produced at our micro-tomography facility. This project explores/compares techniques in hardware to avoid the problem and techniques in software to correct for the problems caused by these objects.

Dr Andrew Kingston, Dr Glenn Myers, A/Prof Adrian Sheppard

Inertial effects during immiscible multiphase fluid displacements in porous media

When fluids flow through porous rocks, the relatively slow bulk fluid front advances via a series of very small, very rapid jumps. This project investigates how the distribution and occurance of these jumps are influenced by experimental conditions such as flow rate and intermittentcy.

Dr Anna Herring, A/Prof Adrian Sheppard

Multi-spectral x-ray micro-tomography

The ANU X-ray micro-tomography facility images over a broad spectrum (or range) of X-ray energies. The behaviour of specimens of interest at different X-ray energies can tell us a lot about its composition. This project will explore 1) techniques to image specimens at various X-ray spectral-bands, and 2) methods to analyse the results.

Dr Andrew Kingston, Dr Glenn Myers, A/Prof Adrian Sheppard

Compression of 3D X-ray imaging data

The CT lab hosts several 3D X-ray imaging systems, each generating ~240GB/day of data. The student will: (i) explore various data compression schemes; (ii) theoretically and empirically analyse interactions between data compression, X-ray image processing, and 3D analysis; (iii) develop new 3D imaging methods, based on successful data compression schemes

Dr Glenn Myers, Dr Andrew Kingston, A/Prof Adrian Sheppard

4D tomography - imaging materials in 3D as they change

The ANU has constructed an X-ray micro-computed tomography facility with a unique helical scanning configuration that enables tomographic images of extremely high quality to be produced.  This experimental project will work with theoreticians to image the evolution of time-changing samples with unprecented time resolution.

A/Prof Adrian Sheppard, Dr Glenn Myers, Dr Andrew Kingston

Imaging fluid-fluid interfacial curvatures in porous media: relating physics and geometry

This computational and theoretical project will extract geometric information from sequences of newly obtained 3D x-ray microscope images to better understand how two immiscible fluids interact inside complex porous materials.

A/Prof Adrian Sheppard, Dr Anna Herring

Using 3D microscopy to understand drought tolerance in plants

Plants have an amazing ability to control water transport through their stems and leaves, with some species able to keep functioning in very hostile conditions. This project will use 3D X-ray microscopy to explore the physical changes in plant cells as a result of water stress.

A/Prof Adrian Sheppard, Dr Anna Herring, A/Prof Jodie Bradby

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