Towards a virtual test framework to predict residual compressive strength after lightning strikes

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dc.contributor.authorMillen, Scott L. J.
dc.contributor.authorXu, Xiaodong
dc.contributor.authorMukhopadhyay, Supratik
dc.contributor.authorWisnom, M. R.
dc.contributor.authorMurphy, A.
dc.date.accessioned2023-08-17T10:00:01Z
dc.date.available2023-08-17T10:00:01Z
dc.date.issued2023-08-06
dc.description.abstractA novel integrated modelling framework is proposed as a set of coupled virtual tests to predict the residual compressive strength of carbon/epoxy composites after a lightning strike. Sequentially-coupled thermal-electric and thermo-mechanical models were combined with Compression After Lightning Strike (CAL) analyses, considering both thermal and mechanical lightning strike damage. The predicted lightning damage was validated using experimental images and X-ray Computed Tomography. Delamination and ply degradation information were mapped to a compression model, with a maximum stress criterion, using python scripts. Experimental data, in which artificial lightning strike and compression testing were performed, was used to assess the predictive capabilities of the framework, considering three lightning strike peak current amplitudes (25, 50, and 75 kA). The framework herein achieved a residual strength prediction within 6% of the experimental values for all peak currents. The relationship between individual lightning damage morphologies (thermal, mechanical and delamination damage) and CAL strength has been numerically established.en_UK
dc.identifier.citationMillen SLJ, Xu X, Lee J, et al., (2023) Towards a virtual test framework to predict residual compressive strength after lightning strikes. Composites Part A: Applied Science and Manufacturing, Volume 174, November 2023, Article number 107712en_UK
dc.identifier.issn1359-835X
dc.identifier.urihttps://doi.org/10.1016/j.compositesa.2023.107712
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20110
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectB. Delaminationen_UK
dc.subjectB. Thermomechanicalen_UK
dc.subjectC. Finite Element Analysis (FEA)en_UK
dc.subjectCompression after Lightning Strikes (CAL)en_UK
dc.titleTowards a virtual test framework to predict residual compressive strength after lightning strikesen_UK
dc.typeArticleen_UK

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