Laboratory: PPRIME Institute, Department: D1-PMM, Team: SIMAC

ED SIMME Doctoral School proposes the following thesis subject:

Title of the thesis : Influence of a thickness gradient on the buckling of thin films : a dual experimental and numerical study

This project would be under the supervision of : CHRISTOPHE COUPEAU, D1-PMM department of PPRIME Institute at Universite de Poitiers.

Co-supervisor(s) : / GUILLAUME GUILLAUME

Starting date: 01/10/2022

Thesis presentation:
Thin films and coatings can be subjected to very high compressive stresses, sometimes of the order of several gigapascals (GPa). The films are then susceptible to delamination and further buckling, sometimes even just after the deposition process.
The understanding of the buckling phenomenon at the meso/microscopic scale has extensively progressed over the last decade, in particular thanks to numerical finite elements simulations. However, many questions remain unanswered, such as the influence of a thickness gradient on the growth and propagation of buckles.
The experimental and numerical results should allow to define in the medium-term an experimental strategy aiming at determining the adhesion properties of film/substrate systems, from the fine morphological characterization of these initially harmful buckling structures.

See the detailed description: SujetUP-2022-coupeau-parry-EN.pdf

For further information and to apply, please contact: : COUPEAU Christophe ().