PhD Study : FLEXUS: Flexible, Lightweight, EXceptional Ultrasound Sensors using Nanocomposite Technology

Summary

Traditional sensors/transducers using ultrasonic waves, which are sound waves that humans can't hear, is well-suited for inspecting things like airplane parts and power plant pipes. However, such sensors have trouble handling curved and complex shapes. Our solution is a flexible transducer [1-3] that fits perfectly to these tricky surfaces, ensuring no flaw goes undetected.

The core of our innovation is an organic material called polyvinylidene fluoride (PVDF), crafted into ultra-thin nanometre-scaled sensitive fibres [4,5]. This technology promises to revolutionise how we assess the health of various structures by embracing flexibility and precision. Think of it as a mat-like sensor that not only conforms to the curves and corners of a structure, but also senses the tiniest imperfections using ultrasonic waves.

The key fabrication process is electrospinning, which spins the PVDF into a mat that we then use to create our flexible sensors. These sensors will undergo rigorous testing – bending and stretching to fit the structures they're inspecting – while providing real-time feedback on the condition of the materials they're testing.

This project involves not just creating these flexible transducers but also characterising [1] and fine-tuning them to be as sensitive and accurate as possible. By conducting a series of tests, we will make adjustments and improvements to its design. This includes playing with different levels of voltage and examining how the fibres respond, ensuring that the final product can detect even the smallest defects with unparalleled clarity. By the end of the project, a smarter, more adaptable way will be offered to keep a vigilant eye on the health of essential engineering structures, from the vast pipes in nuclear facilities to the wings of an airplane, making the world a safer place for everyone.

The proposed research integrates developments in different research areas, such as polymer composite manufacturing and mechanical and electrical characterisation. This should appeal to candidates with an interest in nanomaterials, polymer composites (fabrication/processing, structural, mechanical/electrical characterisation), and simulation. Applications are encouraged from graduates from science or engineering disciplines.

Essential criteria

Applicants should hold, or expect to obtain, a First or Upper Second Class Honours Degree in a subject relevant to the proposed area of study.

We may also consider applications from those who hold equivalent qualifications, for example, a Lower Second Class Honours Degree plus a Master’s Degree with Distinction.

In exceptional circumstances, the University may consider a portfolio of evidence from applicants who have appropriate professional experience which is equivalent to the learning outcomes of an Honours degree in lieu of academic qualifications.

• Sound understanding of subject area as evidenced by a comprehensive research proposal

Desirable Criteria

If the University receives a large number of applicants for the project, the following desirable criteria may be applied to shortlist applicants for interview.

• First Class Honours (1st) Degree
• Masters at 65%
• Work experience relevant to the proposed project
• Publications - peer-reviewed

Equal Opportunities

The University is an equal opportunities employer and welcomes applicants from all sections of the community, particularly from those with disabilities.

Appointment will be made on merit.

Funding and eligibility

The University offers the following levels of support:

Department for the Economy (DFE)

The scholarship will cover tuition fees at the Home rate and a maintenance allowance of £19,237 (tbc) per annum for three years (subject to satisfactory academic performance).

This scholarship also comes with £900 per annum for three years as a research training support grant (RTSG) allocation to help support the PhD researcher.

• Candidates with pre-settled or settled status under the EU Settlement Scheme, who also satisfy a three year residency requirement in the UK prior to the start of the course for which a Studentship is held MAY receive a Studentship covering fees and maintenance.
• Republic of Ireland (ROI) nationals who satisfy three years’ residency in the UK prior to the start of the course MAY receive a Studentship covering fees and maintenance (ROI nationals don’t need to have pre-settled or settled status under the EU Settlement Scheme to qualify).
• Other non-ROI EU applicants are ‘International’ are not eligible for this source of funding.
• Applicants who already hold a doctoral degree or who have been registered on a programme of research leading to the award of a doctoral degree on a full-time basis for more than one year (or part-time equivalent) are NOT eligible to apply for an award.

Due consideration should be given to financing your studies. Further information on cost of living