Optimization of the drilling process of a multilayer material composed of CFRP/Aluminum/Titanium

This project is in partnership with CRIAQ. The drilling process of 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 analysis 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 multi-layer material. Using DOE approach, the drilling tests will be conducted for the optimization of the cutting conditions (tooling, parameters, and cutting strategies).

Faculty Supervisor:

Jean-François Chatelain, M. Balazinski


Justin Lance




Aerospace studies




Polytechnique Montréal



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