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PhD in High-Speed X-ray Imaging for Manufacturing: Reconstruction and Data Optimisation


WMG

About the Project

X-ray imaging (X-ray computed tomography, XCT) has become common place in high-value manufacturing such as aerospace and automotive to identify defects in industrial components and measurement. The technique can provide rich information on internal geometries that are otherwise inaccessible which is its greatest allure, particularly with additive manufacture. Typically the scanning process can take 30 minutes to a number of hours depending on the part, but with our latest lab based system from TESCAN we can achieve speeds as fast as 10 seconds. This creates opportunities in materials testing where the effect of the loading can be dynamically observed.

However, there is a trade off in image quality vs scan speed. When we optimise for speed, the image quality decreases and without care the features can become blurred, unsharp, or disappear altogether. What data is acquired in the scanning procedure and how it is reconstructed from projection to images can heavily influence this balance. This project will investigate and quantify appropriate reconstruction methodologies, data optimisation and scanning protocols for achieving the required image quality in high-speed imaging.

The studentship is based in the CiMAT group at WMG, University of Warwick. The team is interdisciplinary with a focus on measurement applied to a number of fields; from aerospace and energy, to forensics and museums. During your studies you will also be supervised by global imaging company TESCAN, including an exciting opportunity for a European industrial placement there.

Largely you will work with established software packages and toolkits which you will receive training, but candidates are expected to demonstrate interest in coding and experience in MATLAB, Python or similar.

ESSENTIAL AND DESIRABLE CRITERIA

The project is suitable for computer science, engineering, physics or mathematics graduates with strong computational skills.

Applicants should have a have a minimum 2.1 undergraduate (BEng, MEng, BSc) and/or postgraduate masters’ qualification (MSc) with 65% or above in a relevant science and technology field: computer science, engineering, physics or mathematics.

Funding Notes

Funding of £18,009 per annum is available for UK/EU applicants for 4 years.

To be eligible for this project the successful applicant should have indefinite leave to remain in the UK and have been ordinarily resident here for 3 years prior to the project start-date, apart from occasional or temporary absences. Additional details of these criteria are available on the EPSRC website.


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