Thickness threshold study of polyaniline-based lightning strike protection coating for carbon/glass fiber reinforced polymer composites

Sukanta Das, Vipin Kumar, Juhyeong Lee, Tomohiro Yokozeki, Takao Okada

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Different polyaniline (PANI) based lightning strike protection (LSP) coating thicknesses were tested against simulated lightning strike tests to evaluate the threshold thickness of the coating. A series of lightning strike tests were performed on carbon/glass fiber reinforced polymer (CFRP/GFRP) composites subjected to simulated lightning currents ranging from 40 to 100 kA. Five LSP-coated specimens were considered herein: two CFRP and three GFRP composites. A minimum of ∼ 345 μm thick PANI-based LSP coating on CFRP and GFRP composites under a 40 kA peak current retained 83 % and 100 % residual strength, respectively. Additionally, GFRP specimens tested against 60 and 100 kA peak currents exhibited 100 % residual strength. This study proposes that a PANI-based LSP coating is suitable for protecting GFRP composites, while the careful design is necessary for CFRP composites to avoid any catastrophic failure.

Original languageEnglish
Article number114954
JournalComposite Structures
Volume280
DOIs
StatePublished - Jan 15 2022

Funding

The authors acknowledge the Japan Society for the Promotion of Science (JSPS) for this project’s financial support (Grant-in-Aid for Scientific Research, 21H01525). Dr. Vipin Kumar was supported by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. The authors also like to thank Mrs. Y. Kobayashi for fabricating the composites using the VARTM technique and team members of NCC, Nagoya University, for their supports in conducting the LS tests. The authors acknowledge the Japan Society for the Promotion of Science (JSPS) for this project's financial support (Grant-in-Aid for Scientific Research, 21H01525). Dr. Vipin Kumar was supported by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. The authors also like to thank Mrs. Y. Kobayashi for fabricating the composites using the VARTM technique and team members of NCC, Nagoya University, for their supports in conducting the LS tests.

Keywords

  • Conductive coating
  • Damage assessment
  • Lightning damage
  • Lightning strike protection
  • Polyaniline

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