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Structural response of CFRP materials subjected to simulated lightning strikes

Structural response of CFRP materials subjected to simulated lightning strikes
Structural response of CFRP materials subjected to simulated lightning strikes
The buckling response of Carbon Fibre Reinforced Polymer (CFRP) panels damaged by simulated lightning strikes is evaluated. Five panels constructed with carbon/epoxy material were subjected to an electrical current with 10/350µs waveform that simulates an idealized lightning strike. The buckling experiments were conducted in a newly designed modified buckling test, herein referred to as Compression After Lightning Strike (CALS), which is able to accommodate large composite panels and allows the full extent of the lightning damage to be included in the compression test. Stereo Digital Image Correlation (DIC) was used on both sides of the plate to obtain the strain and displacements that occur during the CALS test and hence determine how the lightning strike affects the mechanical performance of the structure. The experimental results were benchmarked and compared against a shell post-buckling finite element model (FEM). The results reported show good agreement between the experiment and the model predictions.
Harrell, Timothy, Michael
c97349b6-6f27-423d-b3d1-e35b30552692
Harrell, Timothy, Michael
c97349b6-6f27-423d-b3d1-e35b30552692

Harrell, Timothy, Michael (2019) Structural response of CFRP materials subjected to simulated lightning strikes. 14th International Conference on Advances on Experimental Mechanics, Queen's University Belfast, Belfast, United Kingdom. 10 - 13 Sep 2019. 5 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

The buckling response of Carbon Fibre Reinforced Polymer (CFRP) panels damaged by simulated lightning strikes is evaluated. Five panels constructed with carbon/epoxy material were subjected to an electrical current with 10/350µs waveform that simulates an idealized lightning strike. The buckling experiments were conducted in a newly designed modified buckling test, herein referred to as Compression After Lightning Strike (CALS), which is able to accommodate large composite panels and allows the full extent of the lightning damage to be included in the compression test. Stereo Digital Image Correlation (DIC) was used on both sides of the plate to obtain the strain and displacements that occur during the CALS test and hence determine how the lightning strike affects the mechanical performance of the structure. The experimental results were benchmarked and compared against a shell post-buckling finite element model (FEM). The results reported show good agreement between the experiment and the model predictions.

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More information

Published date: 2019
Venue - Dates: 14th International Conference on Advances on Experimental Mechanics, Queen's University Belfast, Belfast, United Kingdom, 2019-09-10 - 2019-09-13

Identifiers

Local EPrints ID: 438332
URI: http://eprints.soton.ac.uk/id/eprint/438332
PURE UUID: 8490de29-ec8a-495a-a24b-ff038ea5d184
ORCID for Timothy, Michael Harrell: ORCID iD orcid.org/0000-0002-0783-533X

Catalogue record

Date deposited: 06 Mar 2020 17:30
Last modified: 12 Dec 2021 08:46

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Contributors

Author: Timothy, Michael Harrell ORCID iD

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