Optimization of the trimming process of CFRP and multilayer material composed of CFRP/Aluminum/Titanium

This project is in partnership with CRIAQ. The trimming process of the CFRP and the multilayer material (CFRP/Aluminum/Titanium) needs to be studied in terms of the resulting quality of produced parts but also in terms of cost considering cutting tool life and time of operation. For the quality aspect, the responses measured include the evaluation of tool wear, delaminating factor Df with cracks and thermal affected matrix estimation, the surface roughness as well as the dimensional and geometric errors of the given trimmed features. It is expected that both objectives refer to cutting conditions with opposed tendency in the optimization process. To address this multi-criteria optimization, Grey relational analysis [28] will be considered to identify the significant parameters which may be the source of compromises. The experiments will be carried out under dry and dynamically stable conditions for the carbon-epoxy composites as well as the multi-layer material. The proposed methodology is to design and conduct a series of tests to determine dynamically stable conditions during the trimming process of composites using accelerometers then construct and validate stability lobes for composites. Then, using DOE approach, design and conduct tests for the optimization of the cutting conditions (tooling, parameters, and cutting strategies). Generalise the strategies for multi-layer materials.

Sébastien Bérubé
Faculty Supervisor: 
Drs. V. Songméné & J-F Chatelain