Next Generation Composite Aircraft Fuselage Materials under Post-crash Fire Conditions
This paper summarizes a series of small-scale tests carried out to evaluate and model the post-crash fire integrity of composite aircraft fuselage structures.
The US Federal Aviation Administration regulations for the penetration of an external fuel fire into an aircraft cabin after crash require a burn-through period of 4min (FAA § 25.856 Appendix F, Part VII). Different candidate structures for the next generation of composite aircraft fuselage, provided by Airbus, were investigated, including CFRP monolithic laminate and a folded-core CFRP sandwich. Those materials were subjected to constant heat flux from a propane gas burner, while being held under compressive load in a small, specially designed compression test rig with anti-buckling guides. The propane burner was calibrated to produce a constant heat flux up to 182kW/m2. The sample time-to-failure was measured, along with the temperatures at various points through the thickness.
Modelling the thermal and structural behaviour under load required the use of a modified version of the Henderson Equation, which describes heat transfer through composites under ablative fire conditions. This has been incorporated into the Com-Fire software model. Kinetic parameters for the resin decomposition reaction were determined from thermo-gravimetric data and other thermal parameters, conductivity and diffusivity were measured experimentally. The paper will compare the behaviour of single and double-skinned structures and will examine measured and modelled behaviour.
- Gibson, A.G., Wright, P.N.H., Wu, Y-S., Mouritz, A.P., Mathys, Z., Gardiner, C.P. (2004) The integrity of polymer composites during and after fire. Journal of Composite Materials 38: pp. 1283-1308 CrossRef
- Mouritz, A.P. (2006) Fire Safety of Advance Composite for Aircraft, Aviation Safety Research Grant B2004/0046, School of Aerospace, Mechanical & Manufacturing Engineering RMIT University.
- CAP681 Global Fatal Accident Review 1980–1996. www.caa.co.uk
- Fire and Smoke-Resistant Interiors Materials for Commercial Transport Aircraft. The National Academy of Sciences, Washington, DC
- Dao, M., .Asaro, R. (1999) A study on failure prediction and design criteria for fiber composites under fire degradation. Composites 30A: pp. 123-131
- Mouritz, A.P., Mathys, Z. (2001) Post-fire mechanical properties of glass-reinforced polyester composites. Composites Science and Technology 61: pp. 475-490 CrossRef
- Dodds, N. (2000) Fire behaviour of composite laminates. Composites: Part A 31: pp. 689-702 CrossRef
- Gibson, A.G. et al. (2003) A Low Cost Burner Technique for the Development and Modelling of Laminates in Fire. In Composites in Fire 3: 3rd International Conference on the Response of Composite Materials to Fire, Newcastle upon Tyne, England.
- Greene, E. (1993) Fire Performance of Composite Materials for Naval Applications, US Navy Contract N61533-91-C-0017, Structural Composites, Melbourne, FL.
- Gibson, A.G. (2006) Laminate theory analysis of composites under load in fire. Journal of Composite Materials 40: pp. 639-658 CrossRef
- Budiansky, B., Fleck, N.A. (1993) Compressive failure of fibre composite. Journal of the Mechanics and Physics of Solids 41: pp. 183-211 CrossRef
- chultheisz, R., aas, A.M. (1996) Compressive failure of composite, Part I: Testing and micromechanical theories. Progress in Aerospace Science 32: pp. 1-42 CrossRef
- Friedman, H.L. (1959) Kinetics of thermal degradation of char-forming plastics from thermogravimetry: Application to a phenolic plastic. In Proceedings of the 136th American Chemical Society meeting, Atlantic City, NJ.
- Cai, X.E., Shen, H., Zhang, C.H., Wang, Y.X., Kong, Z. (2000) Application of constant reaction rate TG to the determination of kinetic parameters by Hi-Res TG. Journal of Thermal Analysis and Calorimetry 60: pp. 623-628 CrossRef
- Opfermann, J. (2000) Kinetic analysis using multivariate non-linear regression. Journal of Thermal Analysis and Calorimetry 60: pp. 641-658 CrossRef
- Henderson, J.B., Wiebelt, J.A., Tant, M.R. (1985) A model for the thermal response of polymer composite materials with experimental verification. Journal of Composite Materials 19: pp. 579-594 CrossRef
- Gibson, A.G. (1995) A model for the thermal performance of thick composite laminates in hydrocarbon fires. Revue de l’Institut FranÇais du Pétrole 50: pp. 69-74
- Next Generation Composite Aircraft Fuselage Materials under Post-crash Fire Conditions
- Book Title
- Engineering Against Fracture
- Book Subtitle
- Proceedings of the 1st Conference
- Book Part
- pp 169-181
- Print ISBN
- Online ISBN
- Springer Netherlands
- Copyright Holder
- Springer Netherlands
- Additional Links
- Composite structures
- Fire resistance
- Mechanical property
- Industry Sectors
- eBook Packages
- Editor Affiliations
- 1. Dept. Mechanical Engineering & Aeronautics, University of Patras
- Author Affiliations
- 2. NewRail, Newcastle University, Stephenson Building, Claremont road, Newcastle upon Tyne, NE1 7RU, UK
- 3. TCC1/Department IW-CT, EADS Innovation Works, 81663, Munich, Germany
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