This paper presents the results of a project concerned with the development of a technique for automatic material loss characterization based on pulsed eddy current data. The goal of the project was to develop a software tool that would facilitate distinguishing of material loss in multi-layer structures from effects such as probe lift-off and interlayer gap.
Following on from previous work addressing the capabilities of time-frequency analysis of PEC signals to provide specific visual patterns that can be related to the interlayer gap, lift-off, and material loss, the authors have investigated this method along with an intelligent system to automatically characterize and determine the location of material loss in a two-layer structure.
These systems are dedicated to non-destructive test of aircraft components made of composite materials like GLARE, GFRP and CF(K)
The applied inspection technology is mainly thru transmission technique using water squirters. Additionally bubbler technology for precise pulse echo technique and multi channel acquisition is used. Two main requirements are to be fulfilled*Fast inspection using high inspection speed and / or multi channel inspection systems. *High resolution and reliability using sensitive and state of the art UT equipment and precise mechanical scanner or linear robot systems, also for 3 dimensional curved parts.
With this paper we will show specific applications of different system layout.The newest solutions for precise and high speed scanning systems, also for three dimensional parts. Different applications with multi channel acquisition using conventional and high integrated electronics.
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