Publication :


Title:

Numerical Modelling of a Lightning Strike on a Protected Composite Panel

Authors: C. Espinosa, H. Bhoosnurmath, A. Carcel Lopez and F. Lachaud
Year: septembre 2017
Proceedings de : ICOLSE 2017 International Conference on Lightning and Static Electricity, 13-15 sept. 2017, Nagoya (J).


Abstract:
The increased usage of carbon-fibre reinforced polymer (CFRP) composites in aerospace has made the investigation of the direct effects of a lightning strike (LS) on protected CFRP desirable. Among others, recent works based on the electrical-thermal model of Ogasawara et al. [1] use electrical-thermal analysis to evaluate the effect of resin pyrolysis on the induced bulk damage of unprotected CFRP panels [2]. A coupled thermal-mechanical model is proposed here which considers non-linearities and temperature dependency of material behaviour for the lightning strike protection (LSP) and CFRP. The thermal and mechanical loads calculated from [3] and [4] are applied on a single representative weighted-average arc-root radius rc_avg over selected time steps on a CFRP protected by a solid copper foil (SCF). Hypotheses are proposed and subsequently validated for the cohesive behaviour between the SCF and CFRP panel apart from further investigating the effect of a paint layer through parametric study.

Bibtex citation :
@INPROCEEDINGS{Espinosa2017,
Author={Espinosa, C. and Bhoosnurmath, H. and Carcel Lopez, A. and Lachaud, F.},
Title={Numerical Modelling of a Lightning Strike on a Protected Composite Panel},
Booktitle={ICOLSE 2017 International Conference on Lightning and Static Electricity, 13-15 sept. 2017, Nagoya (J)},
Pages={},
Year={2017}}


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