Numerical modelling of thermal decomposition processes and associated damage in carbon fibre composites
Numerical modelling of thermal decomposition processes and associated damage in carbon fibre composites
Thermo-chemical degradation of Carbon Fibre Composite materials (CFCs) under intensive heat fluxes has been modelled. The model couples together heat diffusion, polymer pyrolysis with associated gas production and convection through partially decomposed CFCs, and changes in transport properties of the material due to the damage. The model has been verified by laser ablation experiments with controlled heat input. The numerical predictions indicate that the thermal gas transport has a minimal affect on the decomposition extent. On the other hand, the model shows that the internal gas pressure is large enough to cause fracture and delamination, and the damage extent may go far beyond the decomposition region as witnessed from experimental verification of the model.
carbon fibre composites, pyrolysis, modelling, fractional steps method
Chippendale, R.D.
192d7845-80dd-4f92-979b-d13c1b870a62
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Lewin, P.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
1 September 2014
Chippendale, R.D.
192d7845-80dd-4f92-979b-d13c1b870a62
Golosnoy, I.O.
40603f91-7488-49ea-830f-24dd930573d1
Lewin, P.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Chippendale, R.D., Golosnoy, I.O. and Lewin, P.
(2014)
Numerical modelling of thermal decomposition processes and associated damage in carbon fibre composites.
Journal of Physics D: Applied Physics, 47 (38), [385301].
(doi:10.1088/0022-3727/47/38/385301).
Abstract
Thermo-chemical degradation of Carbon Fibre Composite materials (CFCs) under intensive heat fluxes has been modelled. The model couples together heat diffusion, polymer pyrolysis with associated gas production and convection through partially decomposed CFCs, and changes in transport properties of the material due to the damage. The model has been verified by laser ablation experiments with controlled heat input. The numerical predictions indicate that the thermal gas transport has a minimal affect on the decomposition extent. On the other hand, the model shows that the internal gas pressure is large enough to cause fracture and delamination, and the damage extent may go far beyond the decomposition region as witnessed from experimental verification of the model.
Text
Journal_laser_ablation_170714_revision_submit.pdf
- Author's Original
More information
Accepted/In Press date: 24 July 2014
e-pub ahead of print date: 22 August 2014
Published date: 1 September 2014
Keywords:
carbon fibre composites, pyrolysis, modelling, fractional steps method
Organisations:
EEE
Identifiers
Local EPrints ID: 367449
URI: http://eprints.soton.ac.uk/id/eprint/367449
ISSN: 0022-3727
PURE UUID: 6820cbe1-1280-41b8-b4c5-0fb75fb7c055
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Date deposited: 30 Jul 2014 10:32
Last modified: 15 Mar 2024 02:43
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Contributors
Author:
R.D. Chippendale
Author:
I.O. Golosnoy
Author:
P. Lewin
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