Mechanisms of damage propagation in carbon composites under high impulse current magnitudes

Abid, Rabia, Haddad, Abderrahmane ORCID: https://orcid.org/0000-0003-4153-6146, Cole, M., Griffiths, Huw, Clark, David ORCID: https://orcid.org/0000-0002-1090-2361, Stone, Christopher and Evans, Samuel Lewin ORCID: https://orcid.org/0000-0003-3664-2569 2015. Mechanisms of damage propagation in carbon composites under high impulse current magnitudes. Presented at: 50th International Universities Power Engineering Conference (UPEC), Stoke-on-Trent, UK, 1-4 September 2015. Power Engineering Conference (UPEC), 2015 50th International Universities. p. 1. 10.1109/UPEC.2015.7339853

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Abstract

In this investigation, the damage caused by large-magnitude lightning impulse currents was studied in the low Amperes and high kiloamperes current ranges. For the low current up to 350A tests, 150 mm × 150 mm square carbon composite material samples with a thickness of 2 mm and having a fastener and metal ring were used. For the high current tests using the D Waveform with magnitudes up to 70kA, two square samples of 550 mm × 550 mm were used with a thickness of 5 mm. The dent depth and ply level damage due to the waveform D lightning impulse current was estimated using scanning electron microscopy. It was found that the mechanical strength for samples impacted with 350 A current did not show any significant change in mechanical parameters whereas mechanical strength was considerably reduced for samples subjected to lightning current of more than 11kA magnitude.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
ISBN:	978-1-4673-9682-0
Last Modified:	20 Dec 2022 13:25
URI:	https://orca.cardiff.ac.uk/id/eprint/88281

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