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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Frédéric Lasserre1, David Roue2, Juergen Laube3, Philippe Dumas4, Bruno Kingler4, François Cartier2 and Olivier Roy5
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DOI:10.17265/1934-7359/2017.10.004
Affiliation(s)
1. Technical Engineering Department, AREVA Nuclear Power, Paris 94300, France;
2. CEA LIST Department, CEA SACLAY, Gif sur Yvette, 91191, France;
3. IBGSI Department, AREVA GmbH, Erlangen 91052, Germany;
4. IMASONIC, Voray-sur-l’Ognon, 70190, France;
5. M2M, Les Ulis, 91940, France
ABSTRACT
Because the UT (ultrasonic testing) flexible probe
technology may be an appropriate answer to examine components with uneven
surface, AREVA has developed an industrial application of the CEA’s (French Atomic Energy and Alternative Energies)
flexible phased arrays sensors. As a “first of a kind” project, the challenges faced
were significant, including developing a
phased array smart probe suitable for industrial use on rather simple but large
scale geometries, permitting UT propagation within a constraining media
structure and then targeting a qualification according to ENIQ (European
Network for Inspection Qualification) methodology. A prototype flexible
probe, designed for UT validation, and final flexible linear array probes
permitting the UT behavior (as, e.g., detection and sizing from diffraction type echoes) to
be maintained on wavy coupling surfaces, have been manufactured.
These probes include a profilemeter with optical sensors control and a
specifically designed coupling circuit (avoiding probe housing tightness
issues). Qualification has been performed using open test
blocks, (where known “defects” exist, for procedure qualification), and blind test blocks, (where “defects” are unknown, for qualification of testing personnel).
One open test bloc was customized to represent a “real” surface condition, with gaps up to 2.5 mm under the
regular rigid probes. AREVAI/BGSI in Germany was selected to lead the
project, with assistance in development and manufacturing sub-contracted to “CEA/LIST” laboratory, and the
companies “IMASONIC” and “M2M”. This paper describes the development of these probes and explains a few features (ENIQ qualification
objectives fulfilled, UT data acquired on actual perturbed surface) that made
their industrial implementation successful.
KEYWORDS
Ultrasonic testing, phased arrays, flexible probe technology, uneven surface.
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