1. Bearing fatigue of composite laminates: Damage monitoring and fatigue life prediction
- Author
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Emmanuel Mermoz, Laurent Michel, Frédéric Lachaud, Cyril Sola, Arnaud Delabie, Bruno Castanié, Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Aéroport International de Marseille-Provence (FRANCE), Institut Clément Ader (ICA), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), Airbus Helicopters, Aeroport International de Marseille-Provence, Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UPS), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi)
- Subjects
Materials science ,Composite number ,Computed tomography ,02 engineering and technology ,Industrial and Manufacturing Engineering ,law.invention ,[SPI]Engineering Sciences [physics] ,0203 mechanical engineering ,law ,medicine ,Displacement (orthopedic surgery) ,Composite material ,Fatigue ,Bearing (mechanical) ,medicine.diagnostic_test ,business.industry ,Mechanical Engineering ,Fabrics/textile ,Mechanical testing ,Structural engineering ,Composite laminates ,021001 nanoscience & nanotechnology ,Fatigue limit ,Carbon fibre ,Mécanique des structures ,020303 mechanical engineering & transports ,Mechanics of Materials ,[SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph] ,Service life ,Ceramics and Composites ,0210 nano-technology ,business ,Vibration fatigue - Abstract
International audience; In hybrid composite/metallic structures, loads can be transmitted from one part to the other through localized contact pressures, i.e., bearing. Such structures may be rotating structures, which can accumulate as many as 109 load cycles during their service life. Designing safe hybrid rotating structures thus requires a sound understanding of how composite joints degrade under bearing fatigue. Pin-bearing fatigue tests were run under load-control. Damage mechanisms were investigated using computed tomography, and the pin displacement was closely monitored thanks to a green-LED micrometer. Building upon the gathered experimental evidences, several damage indicators were then analysed. In particular, hysteresis losses were found to give interesting insights into the fatigue phenomenon, suggesting the existence of a fatigue limit in the very high cycle fatigue (VHCF) regime.
- Published
- 2017
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