Résumé:
The work of the present thesis falls within characterization and electromagnetic control of
composite parts, specifically of unidirectional CFRP (Carbon Fibers Reinforced Polymer). In
this scope two mathematical model were developed, the first one was designed to
characterize the transverse electrical conductivity of CFRP, the idea was to use a percolation
resistance network to represent of the possible inter fibers contacts. The electrical quantity
of the resulting network were calculated using Markov chains, which allows us to predict
the transverse conductivity and the principles parameters that influence it. The second
model discuss the non destructive testing using eddy currents on CFRP, the simultaneous
approach coupling micro to macro coupling was adopted. This approach have the benefit of
getting homogenized solution without calculating the conductivity tensor explicitly, this
advantage allows us to simulate microscopic internal defect affecting the CFRP.
