Mechanical Engineering: Fully Funded EPSRC & ORE Catapult PhD Scholarship at Swansea

  • Phd
  • Full cost of UK tuition fees, plus a stipend
  • 20 March 2021
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Mechanical Engineering: Fully Funded EPSRC and ORE Catapult PhD Scholarship: Understanding the fatigue behaviour of tidal turbine blades

This scholarship is funded by the EPSRC and ORE Catapult.

Start date: April 2021

Subject areas: Engineering/Materials Science/Computational Mechanics

Project description: 
Tidal turbines are made of composite materials, where they are reinforced by carbon or glass fibres. Composites are natural choices over metals because they can be formed into complex shapes and have fatigue tolerance, corrosion resistance and damage tolerance, particularly in harsh operating environments such as subsea conditions. It is vitally important to fully understand the loads that tidal turbines will experience and to design against potential failure mechanisms. Tidal turbines are prone to various failure mechanisms such as micro-cracks, delamination between fibres and matrix resins, chemical and physical aging from salinity, bio-fouling etc. Among these phenomena, water ingress due to diffusion under submerged conditions makes them seriously vulnerable to reduced service life. In order to understand the fatigue life in subsea environments, the so-called accelerated hygrothermal aging technique is applied where the aging experiments, to account for the seawater ingress, are conducted at an elevated temperature under submerged conditions. Such a technique helps to understand the aging kinetics within a specified short time period of 2-3 years instead of a real test of 20-25 years long. However, it is not clear if experiments at elevated temperature replicate the ideal conditions of aging for a long time period.

This research aims to predict the effects of aging by a de-coupled approach in order to understand the fatigue failure behaviour of tidal turbine blades made of fibre-reinforced composites. For this, essential experiments such as three-point, four-point flexural and biaxial fatigue tests will be conducted in submerged conditions under ambient and elevated temperatures. Furthermore, the same tests will be performed in air under ambient and elevated temperatures. Numerical methods have already proved successful in simulating crack growths and various failure mechanisms. Based on experimental findings, continuum-based coupled models will be developed and validated to guide design techniques in the future to minimize the number of expensive structural tests that need to be performed.

The experimental facet will primarily be based in the Swansea University College of Engineering, Bay Campus. Some experiments may be conducted in collaboration with IFREMER, France (French Research Institute for Exploitation of the Sea).

Project supervisors: Dr Mokarram Hossain (Primary), Professor Ian Masters (Second)

Available resources/facilities:  Biaxial fatigue test machine under submerged conditions, relevant software (ABAQUS, ANSYS, etc.).
Swansea University
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Swansea University

Swansea, is a coastal city and county, officially known as the City and County of Swansea in Wales.

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Eligibility

Candidates should hold a minimum of an upper second class (2:1) honours degree (or its equivalent) in in Engineering or Materials Science or similar relevant discipline (Mechanical/Civil/Material Engineering/Computational Engineering/Mechanics). 

Good knowledge in nonlinear mechanics and computer programming (C/FORTRAN/MATLAB) are highly desirable.

We would normally expect the academic and English Language requirements (IELTS 6.5 overall with 5.5+ in each component) to be met by point of application. For details on the University‚Äôs English Language entry requirements, please visit ‚Ästhttp://www.swansea.ac.uk/admissions/english-language-requirements/

Due to funding restrictions, this scholarship is open to UK/EU candidates only. International candidates are welcome to apply but please note the scholarship will only cover tuition fees.

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Benefits

This scholarship covers the full cost of UK/EU tuition fees and an annual stipend of £15,285 for 4 years. 

There will be additional funds available for research expenses including conferences and travel.

Application

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