EC Modellind and Enhancement Signals in CFRP Inspection

Non Destructive Testing techniques are more and more
exploited in order to quickly and cheaply recognize flaws into the
inspected materials, specially for carbon ¯ber reinforced polymers
in recent years. Their production which are widely used both in
civil and military applications, is an elaborate process un-free from
faults and problems. Problems during the manufacturing, such as
plies' overlapping, can cause flaws in the resulting material, this way
compromising its integrity. Within this framework, this work aims to
propose a design of ferrite core probe for eddy current non destructive
evaluation, in order to investigate the presence of defects in carbon fiber
epoxy composite materials. In this context, modelling is a powerful
tool for inspection improvements. It helps probe-coil designers to
optimize sensors for each examination requirement, providing better
understanding of the involved physics, supporting operator training
and increasing defect analysis reliability. Particularly, Finite Element
based analyzes will be carried out into this path. After this step,
in order to improve the quality of simulated measurement, a filtering
technique has been exploited in order to improve the accuracy and
performance of the flaw detection.