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Proceedings Paper

Study of CFRP adhesive bonds influenced by factors encountered during aircraft operations
Author(s): Pawel H. Malinowski; Tomasz Wandowski; Wieslaw M. Ostachowicz; Angelos Christopoulos; Ilias Koulalis; Konstantinos Kitsianos; George Kanterakis; Romain Ecault; Rainer Stoessel; Damien Segur; Laurent Berthe; Maxime Sagnard; Fabienne Touchard; Michel Boustie; Welchy Leite Cavalcanti; Kai Brune
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Paper Abstract

Composite materials are commonly used in many branches of industry. One of the effective methods to join CFRP parts is to use adhesives. There is a search of effective methods for quality assurance of bonded parts. There is a need for pre- and post-bond inspection to ensure proper bonding and verify its quality. Research reported here focuses on post-bond inspection of bonded CFRP parts. In this paper we report investigations of samples that were modified in order to simulate the conditions that can be encountered during the bonding repair processes. The modifications were made before adhesive bonding, and their effect on the quality of the bond is studied. The first case was the thermal treatment. It was made by exposure of samples to elevated temperatures. This case accounts for parts that may be exposed to external heat source or lightening impact. Second of the investigated cases was deicing fluid contamination prepared by dip-coating of clean CFRP plates. When cleaning the aircraft for a repair this fluid can be transported to bonding areas and weaken the joint. The third type of modification was faulty curing of the adhesive. It was prepared by local pre-curing of the adhesive. Pre-curing causes irregularities in the curing of the adhesive joint. Apart from single modifications, also mixed cases were studied, as well as scarf bonding. The samples were studied in non-destructive approach. It was shown that for some of the cases the detection is possible.

Paper Details

Date Published: 27 March 2018
PDF: 14 pages
Proc. SPIE 10598, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018, 105980C (27 March 2018); doi: 10.1117/12.2294616
Show Author Affiliations
Pawel H. Malinowski, Institute of Fluid-Flow Machinery (Poland)
Tomasz Wandowski, Institute of Fluid-Flow Machinery (Poland)
Wieslaw M. Ostachowicz, Institute of Fluid-Flow Machinery (Poland)
Angelos Christopoulos, GMI Aero (France)
Ilias Koulalis, GMI Aero (France)
Konstantinos Kitsianos, GMI Aero (France)
George Kanterakis, GMI Aero (France)
Romain Ecault, Airbus Operations S.A.S. (France)
Rainer Stoessel, Airbus Group Innovations (Germany)
Damien Segur, CEA Tech Occitanie (France)
Laurent Berthe, PIMM, CNRS-ENSAM Paristech (France)
Maxime Sagnard, PIMM, CNRS-ENSAM Paristech (France)
Fabienne Touchard, Univ. de Poitiers (France)
Michel Boustie, Univ. de Poitiers (France)
Welchy Leite Cavalcanti, Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung (Germany)
Kai Brune, Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung (Germany)


Published in SPIE Proceedings Vol. 10598:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
Hoon Sohn, Editor(s)

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