PhD Studentship - Modal Responses of Mechanical Structures Under Thermo-mechanical Loads

Cranfield University

The research in this doctoral opportunity will investigate the relation between the strain energy and the change in modal response of a structure under thermo-mechanical loads.

Sub-surface fatigue in mechanical structures affecting their fundamental modes within conventional sensing limits. As per published research, these effects are mostly investigated under dynamic loads on different boundary conditions. Analytical, numerical and empirical studies clearly indicate that the dissipated strain energy during crack propagation affects the modal values of the structure. However, there is still need to perform comprehensive research that can relate the mentioned parameters specifically under thermo-mechanical loads. The cyclic thermal loads along with dynamic loading may represent a more practical loading scheme as experienced on mechanical components or structures.

In this research, empirical setup will be developed by using a modal exciter and a mini cartridge or induction heating mechanism to provide both the dynamic and thermal loading on a mechanical structure simultaneously. Instrumentation involving accelerometers, acoustic sensors and data acquisition will allow the measurement of the modal response together with the dissipated strain energy. Empirical testing schemes will be pursued under a pre-set boundary condition and more likely to be in a free-fixed mode. The data acquired will be used to relate the strain energy and modal response of the structure when subjected to sub-surface fatigue.

  • Application deadline: Ongoing
  • Award type(s):PhD
  • Duration of award 3 years
  • Eligibility: UK, EU, Rest of World

Supervisors: Dr Muhammad Khan and Professor Andrew Starr

Entry requirements

  • A minimum of a 2:1 first degree in a relevant discipline/subject area (e.g. aerospace, automotive, mechanical, and  manufacturing) with a minimum 60% mark in the Project element or equivalent with a minimum 60% overall module average.
  • The potential to engage in innovative research and to complete the PhD within a three-year period of study.
  • A minimum of English language proficiency (IELTS overall minimum score of 6.5).

Funding: Self-funded

Doctoral Training Centre
Research students at Cranfield benefit from being part of a dynamic, focused and professional study environment and all become valued members of the Cranfield Doctoral Network. This Network brings together both research students and staff, providing a platform for our researchers to share ideas, identify opportunities for collaboration and create smaller communities of practice.  It aims to encourage an effective and vibrant research culture, founded upon the diversity of activities and knowledge. A tailored programme of seminars and events alongside our Doctoral Researchers Core Development programme (transferable skills training), provide those studying a research degree with a wealth of social and networking opportunities.

How to apply
Before completing the application documentation please contact Dr Muhammad Khan muhammad.a.khan@cranfield.ac.uk

If you are eligible to apply for this research studentship, please complete the online application form.

For further information contact us today:
T: 44 (0)1234 758008
E: enquiries@cranfield.ac.uk

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Type / Role:

PhD

Location(s):

South East England