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IRTG 2657 Research Research Projects
Development of thermomechanical models for the optimised design of optical fibre gyroscopes

Development of thermomechanical models for the optimised design of optical fibre gyroscopes

Team:  Pierre Busnel, Pierre-Alain Boucard, François Louf, Philipp Junker
Year:  2021

The continuous improvement of the performance of Fibre Optic Gyroscope (FOG) is based on a detailed understanding of the physical phenomena or material imperfections that can alter their operating principle. The fibre optic coil, being a key element of the optical interferometer, must be the object of particular attention, especially with regard to the thermal and mechanical loads to which it is subjected. Various effects have been highlighted in the literature, notably the Shupe effect and the Mohr effect. The PhD aims to provide answers to the industrial and scientific problems mentioned above, based on results already acquired in a previous PhD, which enabled the development of high-fidelity thermomechanical models based on the finite element method, making it possible to understand the Mohr effect. This new PhD has 3 then main objectives: to consolidate and then exploit the models developed, to take into account the variability of material parameters (in particular during phase transitions) and finally to move towards a design aid tool that is light in terms of computational time by relying on homogenisation techniques possibly coupled with model reduction methods.

Team

 

Doctoral Researcher:  Pierre Busnel

Scientific Advisors: François Louf, Pierre-Alain Boucard, Philipp Junker