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Equivalent impact set-up for lightning strike damage on composite coupons

Abstract : Lightning strikes of composite materials induce two distinct kinds of direct effects: surface and bulk mechanical damage. Bulk damage includes fiber-resin debonding, transverse cracks, fiber rupture and ply delamination. It results from the mechanical stresses associated to physical processes which come with lightning strikes such as surface explosion or magnetic force generation. We propose a method to design mechanical impact tests representative of lightning tests in the sense that strains and stresses applied to the material in both experimental situations are comparable. A campaign of actual equivalent mechanical test and has been designed using a simulation driven procedure and performed in the maboratory. The procedure of the method of equivalence is demonstrated trough the comparison of numerical and real impact tests observations with lightning strikes measurements of rear face displacements and internal damaged areas.
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Contributor : Pierre Naegelen Connect in order to contact the contributor
Submitted on : Thursday, February 28, 2019 - 11:18:06 AM
Last modification on : Tuesday, October 19, 2021 - 11:17:31 PM


  • HAL Id : hal-02051996, version 1


F. Soulas, Christine Espinosa, Frederic Lachaud, S. Guinard, Bruno Lepetit, et al.. Equivalent impact set-up for lightning strike damage on composite coupons. ICCM20, 20th International Conference on Composite Materials, Copenhagen (Danmark), 19-24th July, 2015, Copenhague, Denmark. ⟨hal-02051996⟩



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