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FIRE PROTECTED CARBON FIBRE REINFORCED PLASTICS FOR STRUCTURAL AIRCRAFT COMPONENTS

Roese-Koerner, Imke and Schuh, Benjamin and Bachmann, Jens and Wierach, Peter (2015) FIRE PROTECTED CARBON FIBRE REINFORCED PLASTICS FOR STRUCTURAL AIRCRAFT COMPONENTS. 20th International Conference on Composite Materials, 19.-24.07.2015, Kopenhagen, Dänemark.

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Abstract

The presented study deals with the optimization of fire properties of CFRP fuselage materials in a "pool-fire" scenario (a kerosene fire underneath an aircraft on ground) with the aim to increase the time until the structure fails. For this purpose hybrid material systems are being developed where the flame retardant is directly incorporated into the material. In this way, weight can be saved and the peeling effect, which is common for finishes, would be prevented. Due to the very high heat flux during a kerosene fire, powdered additives and layers are introduced into the composite, which form a thermal barrier or a barrier for gases in case of fire and protect the underlying structure from the effects of the flames. Of these materials, the fire behaviour with regard to smoke density and smoke toxicity is determined. The results show a significant reduction of smoke density for most of the tested materials and comply with the limits of toxic gases for cabin material systems. For a realistic relevelling of the “pool-fire” scenario, a test facility with a propane torch was build, which creates a heat flux of 180kW/m². In this test, the specimens are exposed to flames for 4min and the temperature profile at their backside is recorded with a thermocouple. In order to investigate the mechanical damage of the materials trough the fire, additional specimen were exposed to flame for 15s and the remaining compressive strength was determined. It was found that in particular a titanium foil under the top layer can contribute significantly to improvements in the mechanical properties as well as to slow down the temperature rise on the back of the material.

Item URL in elib:https://elib.dlr.de/97641/
Document Type:Conference or Workshop Item (Speech)
Title:FIRE PROTECTED CARBON FIBRE REINFORCED PLASTICS FOR STRUCTURAL AIRCRAFT COMPONENTS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Roese-Koerner, Imkeimke.roese-koerner (at) dlr.deUNSPECIFIED
Schuh, Benjaminbenjamin.schuh (at) dlr.deUNSPECIFIED
Bachmann, Jensjens.bachmann (at) dlr.deUNSPECIFIED
Wierach, Peterpeter.wierach (at) dlr.deUNSPECIFIED
Date:22 July 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:fire protection, fire resistance, hybrid composites
Event Title:20th International Conference on Composite Materials
Event Location:Kopenhagen, Dänemark
Event Type:international Conference
Event Dates:19.-24.07.2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials, L - Human factors and safety in Aeronautics
Location: Braunschweig , Trauen
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Institute of Propulsion Technology > Engine
Deposited By: Roese-Koerner, Imke
Deposited On:10 Aug 2015 12:50
Last Modified:31 Jul 2019 19:54

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