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PhD Studentship: Strengthening Additive Manufactured Components with Laser Shock Peening

Coventry University

Qualification Type: PhD
Location: Coventry
Funding for: UK Students, EU Students
Funding amount: Bursary plus tuition fees (UK/EU)
Hours: Full Time
Placed On: 29th September 2020
Closes: 15th November 2020
Reference: FTC-PS-MTC-01-21

Eligibility: UK/EU graduates with the required entry requirements

PhD funding award: Bursary plus tuition fees (UK/EU)

Start date: January 2021

Duration of study: Full-Time – between three and three and a half years fixed term

Application deadline date: November 15th 2020 (for commencement in January 2021 start)

Interview dates: Will be confirmed to shortlisted candidates

Enquiries may be addressed to: Dr Pratik Shukla Professor Michael Fitzpatrick

Additive manufacturing (AM) is playing a major role in building industrial components in recent years. Despite having a huge advantages, AM processes still exhibit number of issues with the structural integrity of the parts such as high porosity, microstructural in-homogeneities, strong crystallography texture, elastic anisotropy in the mechanical properties, surface and bulk defects, high tensile residual stresses at the surface, due to repeated thermal cycles and surface finish below industrial requirement needing machining to post-process parts. The residual tensile stresses are particularly detrimental to the fatigue critical components, such as turbine blades in aero and land-based power generation engines, causing early crack initiation and faster crack propagation rate, reducing the service life of these components for instance. The key goals of this studentship is to induce deep compressive residual stresses; improve the microstructure and mechanical properties and improve the surface roughness. The work in this research focuses on implementing both high and low energy, multi-wavelength laser shock peening to additive manufactured (selected) metallic alloys. 

Thereafter, the laser shock peening work will be conducted at both Coventry University facilities and partly at the MTC, utilising different capabilities of both parties. The work to be undertaken by the PhD candidate will be multi-disciplinary, covering laser engineering, material science and computational modelling which will help to confirm and verify experimental results such as residual stresses and heat distribution fields. 

Furthermore, advanced characterization technique will deployed to measure surface roughness and scanning of the 3-D profiles, mechanical testing, includes measurement of residual stresses, hardness, tensile and bending strength, wear and comprehensive examination of the microstructures to ultimately, verify and build process parameter relationship with mechanical properties and microstructure and establish the optimal conditions required to finish/post-process additive manufactured parts with laser shock peening.

How to apply: 

To find out more about the project please contact Dr Pratik Shukla 

To apply on line please visit: 

All applications require full supporting documentation, a covering letter, plus a 2000-word supporting statement showing how the applicant’s expertise and interests are relevant to the project.

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