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Lightning surface explosion impact study on damage generation into composite

Abstract : Lightning damage mechanism for composite aircraft structure is a complex multi-physical phenomenon. The lightning current entering into the surface metallic protection and the carbon plies generates Joule’s effects and electromagnetic forces which both induce mechanical forces and surface explosion that produce a significant mechanical impact. The explosion of the lightning strike protection has been recorded through the measurement of the vaporization profile evolution in space and time using transparent glass epoxy substrates. In this paper, this profile is combined to shock wave model developed by the study of electric explosion on wire equivalent to web of ECF. The initial shock wave from the surface explosion has been injected into a mechanical model using Abaqus Explicit® with a pressure profile dependent on time and distance from lightning current injection. Results of the simulations are confronted with laboratory lightning tests for deflections and damages.
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Submitted on : Tuesday, December 3, 2019 - 4:17:09 PM
Last modification on : Tuesday, May 25, 2021 - 2:42:01 PM
Long-term archiving on: : Wednesday, March 4, 2020 - 8:07:30 PM

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  • HAL Id : hal-02391647, version 1
  • OATAO : 25159

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Audrey Bigand, Christine Espinosa, Jean-Marc Bauchire. Lightning surface explosion impact study on damage generation into composite. International Conference of Lightning and Static Electricity (ICOLSE2019), Sep 2019, Wichita, United States. pp.0. ⟨hal-02391647⟩

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