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Estimation of the load produced by the electro-thermal behaviour of lightning strike protection layers on a composite panel

Bigand, Audrey and Espinosa, Christine and Bauchire, Jean-Marc and Flourens, Franck and Lachaud, Frédéric Estimation of the load produced by the electro-thermal behaviour of lightning strike protection layers on a composite panel. (2018) In: 18th European Conference on Composite Materials (ECCM18), 24 June 2018 - 28 June 2018 (Athens, Greece).

(Document in English)

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The lightning damage mechanism for carbon laminate aeronautical structure is a complex multi-physical phenomenon. The lightning current entering into the surface metallic protection, called LSP (Lightning Strike Protection) and the carbon plies generates Joule’s effects and magnetic forces which both induce mechanical forces and surface explosion that has a significant mechanical impact. In this paper, the focus is made on the contribution of the surface explosion. An electro-thermal model of the vaporization profile has been first validated with lightning test results for an accurate dynamic profile. In a second step an overpressure profile combined with the vaporization front has been implemented in a mechanical model. The deflection profiles of the mechanical model are in good correlation with measurements. The contribution of the explosion is the major contributor in the loading of composite panel. A next step will consist in the determination of the contribution of the CFRP (Carbon Fiber Reinforced Plastic) explosion in the first plies which initiates the damage in the composite by breaking the fibers.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02152507
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Airbus (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université d'Orléans (FRANCE)
Laboratory name:
Deposited On:30 Apr 2019 13:08

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