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

Abid, Rabia, Haddad, Abderrahmane ORCID:, Cole, M., Griffiths, Huw, Clark, David ORCID:, Stone, Christopher and Evans, Samuel Lewin ORCID: 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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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: Engineering
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
ISBN: 978-1-4673-9682-0
Last Modified: 20 Dec 2022 13:25

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