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Hybrid multiscale modelling to predict lightning damage on CFRP materials

Hybrid multiscale modelling to predict lightning damage on CFRP materials
Hybrid multiscale modelling to predict lightning damage on CFRP materials
Carbon Fiber Reinforced Polymers (CFRPs) materials are increasingly being used in the wind turbine industry to reduce weight in turbine blades. However, CFRPs have a particular issue when dealing with lightning strikes because of their anisotropic material properties; in particular, their electrical and thermal conductivities. These issues cause significant damage when exposed to large electric currents. This paper presents a time dependent coupled thermal-electric joule heating model to predict the thermal damage of a CFRP panel when subjected to a lightning strike. The approach of this model uses volume fractions to determine the resulting fiber and resin damage separately. The damage prediction is calculated by a set of pyrolysis equations. The pyrolysis damage alters the materials properties of the elements. The electric current applied to the panel is the 10/350 standard waveform which corresponds to the waveform used to test wind turbines according to the IEC61400 section 24 Ed 1.0.
Harrell, Timothy, Michael
c97349b6-6f27-423d-b3d1-e35b30552692
Thomsen, Ole
f3e60b22-a09f-4d58-90da-d58e37d68047
Barton, Janice
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Harrell, Timothy, Michael
c97349b6-6f27-423d-b3d1-e35b30552692
Thomsen, Ole
f3e60b22-a09f-4d58-90da-d58e37d68047
Barton, Janice
9e35bebb-2185-4d16-a1bc-bb8f20e06632

Harrell, Timothy, Michael, Thomsen, Ole and Barton, Janice (2017) Hybrid multiscale modelling to predict lightning damage on CFRP materials. ISEM 2017 - 2nd International Symposium on Multiscale Experimental Mechanics: Multiscale Fatigue, Copenhagen, Denmark. 08 - 09 Nov 2018. 1 pp .

Record type: Conference or Workshop Item (Other)

Abstract

Carbon Fiber Reinforced Polymers (CFRPs) materials are increasingly being used in the wind turbine industry to reduce weight in turbine blades. However, CFRPs have a particular issue when dealing with lightning strikes because of their anisotropic material properties; in particular, their electrical and thermal conductivities. These issues cause significant damage when exposed to large electric currents. This paper presents a time dependent coupled thermal-electric joule heating model to predict the thermal damage of a CFRP panel when subjected to a lightning strike. The approach of this model uses volume fractions to determine the resulting fiber and resin damage separately. The damage prediction is calculated by a set of pyrolysis equations. The pyrolysis damage alters the materials properties of the elements. The electric current applied to the panel is the 10/350 standard waveform which corresponds to the waveform used to test wind turbines according to the IEC61400 section 24 Ed 1.0.

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More information

Published date: 2017
Venue - Dates: ISEM 2017 - 2nd International Symposium on Multiscale Experimental Mechanics: Multiscale Fatigue, Copenhagen, Denmark, 2018-11-08 - 2018-11-09

Identifiers

Local EPrints ID: 432288
URI: http://eprints.soton.ac.uk/id/eprint/432288
PURE UUID: 6d1342a2-504f-4125-9cc6-5e9113b90e77
ORCID for Timothy, Michael Harrell: ORCID iD orcid.org/0000-0002-0783-533X

Catalogue record

Date deposited: 08 Jul 2019 16:30
Last modified: 09 Jul 2019 00:26

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