PhD Research Studentships

High-Fidelity Modelling of Multi-Material Additive Manufacturing

Supervisor: Chinnapat PANWISAWAS
Apply by:31 January 2023

Description

Project Details: Additive manufacturing (AM) is emerging as a promising alternative for designing advanced metallic or non-metallic parts for complex geometries in aerospace, energy and biomedical applications. The challenge lies in process control; melt flow dynamics, materials mixing and vapour mass loss [1-3].  The composition-process control is vital for predicting laser power-time-temperature processing window and final quality. A high-fidelity thermal-chemical-fluid modelling approach for accurate tracking of surface shape, thermo-capillary dynamics and vaporisation will be developed including multi-species formulations for multi-material simulation.

 

The aim of this project is to develop the novel AM computational model for multi-material manufacturing in advanced materials for repair and biomedical application. This will involve

  1. Digital materials design of composition-process relationship to optimise the chemistry and processing condition to obtain the high integrity parts.
  2. Development of microstructure-property relationship using thermal-chemical-fluid flow characteristic and the subsequent solidification, specifically to rationalise the variation of AM microstructures resulting from powder-heat source reaction – porosity, mass loss rate and interface mixing.
  3. Validation of models using high speed in situ X-ray synchrotron radiography or high-speed photography to capture the thermal-fluid flow during AM. This includes tracking microstructural features emerging at the multi-material interface and between individual powder particles of same metal. Post AM investigation of the microstructures using electron microscopy.

 

The successful PhD candidate will have full access to the SEMS’ advanced microscopy centre as well as mechanical testing facilities. The candidate may also collaborate with project partners, including University of Oxford, University College London and Imperial College London and Science and Technology Facility Council (STFC). The developed computational model will be validated experimentally and then used to predict scatter in processing, microstructure and property in AM, specifically for repair and biomedical application.

 

References

[1] C. Panwisawas, et al. (2020) Metal 3D printing as a disruptive technology for superalloys. Nature Communications 11:2327. DOI: 10.1038/s41467-020-16188-7

[2] J. Shinjo and C. Panwisawas (2021) Digital materials design by thermal-fluid science for multi-metal additive manufacturing. Acta Materialia 210:116825. DOI: 10.1016/j.actamat.2021.116825

[3] J. Shinjo and C. Panwisawas (2022) Chemical species mixing during direct energy deposition of bimetallic systems using titanium and dissimilar refractory metals for repair and biomedical applications. Additive Manufacturing 51:102654. DOI: 10.1016/j.addma.2022.102654

 

Funding

This prestigious QMUL Principal’s studentship is fully funded and includes a 3-year stipend (set at £19,668 for 2022/23) and Home tuition Fees.

 

Eligibility

  • Available to applicants with UK Home Fee Status only. (for details of UK Home status)
  • The minimum requirement for this studentship opportunity is a good Honours degree (minimum 2(i) honours or equivalent) or MSc/MRes in a relevant discipline.
  • If English is not your first language, you will require a valid English certificate equivalent to IELTS 6.5+ overall with a minimum score of 6.0 in Writing and 5.5 in all sections (Reading, Listening, Speaking).
  • Candidates are expected to start from September 2023

 

 

Supervisor Contact Details:

For informal enquiries about this position, please contact Dr Chinnapat Panwisawas, E-mail: c.panwisawas@qmul.ac.uk

 

Application Method:

To apply for this studentship and for entry on to the PhD Full-time the Materials Science / Mechanical Engineering - Semester 1 (September Start), please follow the instructions detailed on the following webpage:

 

Research degrees in Materials:

http://www.qmul.ac.uk/postgraduate/research/subjects/materials.html

 

Please be sure to include a reference to ‘2023 QMRS CP’ to associate your application with this studentship opportunity.

 

Funding

Funded by: Queen Mary Research
UK students only.

Eligibility

  • The minimum requirement for this studentship opportunity is a good honours degree (minimum 2(i) honours or equivalent) or MSc/MRes in a relevant discipline.
  • If English is not your first language, you will require a valid English certificate equivalent to IELTS 6.5+ overall with a minimum score of 6.0 in Writing and 5.5 in all sections (Reading, Listening, Speaking).
  • Candidates are expected to start in (Semester ).
  • SEMS and Principal-funded studentships: this studentship arrangement covers home tuition fees and provides an annual stipend for up to three years (currently set at the 2023/24 stipend rate of £20,622 pa)
  • Note that Queen Mary Research Studentships cover home-rated tuition fees only (See: www.welfare.qmul.ac.uk/money/feestatus/ for details)
  • Overseas applicants would be required to meet the difference between home and international tuition fees

Contact

For informal enquiries about this opportunity, please contact Chinnapat PANWISAWAS.

SEMS Research Centre: