A laser-ultrasonic inspection system for large structures fabricated by automated fiber placement

Par Conseil national de recherches du Canada

Auteur	Rechercher : Blouin, A.¹; Rechercher : Padioleau, C.¹; Rechercher : Néron, C.¹; Rechercher : Monchalin, J.-P.¹; Rechercher : Hojjati, M.²; Rechercher : Choquet, M.
Affiliation	Conseil national de recherches du Canada. Institut des matériaux industriels du CNRC Conseil national de recherches du Canada. Aérospatiale
Format	Texte, Article
Conférence	2nd Joint US-Canada Conference on Composites - American Society for Composites, 26th Annual Technical Conference: Canadian Association for Composite Structures and Materials, 26 September 2011 through 28 September 2011, Montreal, QC
Sujet	Cantilever structures; Complex shapes; Composite manufacturing; External walls; Fiber placement; Innovative method; Inspection system; Inspection technique; Internal walls; Large structures; Laser ultrasonics; National Research Council of Canada; Rotating mirrors; Composite structures; Fuselages; Industrial research; Inspection; Inspection equipment; Structure (composition); Walls (structural partitions); Ultrasonic testing
Résumé	Automatic fiber placement (AFP) is an innovative method for fabricating monolithic large-scale composite structures, such as the big and long barrels that can be assembled to make the fuselage of an airplane. Laser-ultrasonics and laser tapping, which use lasers for generation and detection of ultrasound, are established inspection techniques that are very efficient for detecting flaws (delaminations, disbonds) in complex shape composite structures. A laser-ultrasonic system with a configuration well adapted for the inspection of these big barrel structures was designed, built and installed at the National Research Council of Canada facility, located at Mirabel, Qc, adjacent to composite manufacturing operations. The laser-ultrasonic system is mounted on a long cantilever structure that is inserted into the fuselage. The probing head includes a rotating mirror assembly allowing 360° and one meter wide or more scanning of the whole internal wall of the barrel. The system can also inspect the external wall, when the barrel is mounted on carriage allowing rotation around its axis, as well as various smaller complex shape parts. This inspection system can be operated in both laser-ultrasonic and laser-tapping modes, the latter being particularly useful for honeycombs. A detailed description of the system is presented.
Date de publication	2011
Dans	2nd Joint US-Canada Conference on Composites - American Society for Composites, 26th Annual Technical Conference: Canadian Association for Composite Structures and Materials (2011).
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro NPARC	21271551
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	e2f76145-04a2-4c84-9239-6a16258025be
Enregistrement créé	2014-03-24
Enregistrement modifié	2020-04-21

Date de modification :: 2024-04-19