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Fire stability of glass-fibre sandwich panels: The influence of core materials and flame retardants

  • Fire resistance has become a key property for structural lightweight sandwich components in aviation, shipping, railway vehicles, and construction. The development of future composite materials and components demands adequate test procedures for simultaneous application of compression and fully developed fire. Therefore an intermediate-scale approach (specimen size = 500 mm x 500 mm) is applied with compressive loads (up to 1 MN) and direct application of a burner to one side of the specimens, as established in aviation for severe burn-through tests. The influence of different core structures (polyvinylchloride foam, polyisocyanorate foam reinforced by stitched glass bridges, and balsa wood) was investigated for glass-fibre-reinforced sandwich specimens with and without flame retardants applied on the fabrics, in the matrix, and on surface for each specimen at the same time. Times to failure were increased up to a factor of 4. The intumescent coating prolongs the time to failureFire resistance has become a key property for structural lightweight sandwich components in aviation, shipping, railway vehicles, and construction. The development of future composite materials and components demands adequate test procedures for simultaneous application of compression and fully developed fire. Therefore an intermediate-scale approach (specimen size = 500 mm x 500 mm) is applied with compressive loads (up to 1 MN) and direct application of a burner to one side of the specimens, as established in aviation for severe burn-through tests. The influence of different core structures (polyvinylchloride foam, polyisocyanorate foam reinforced by stitched glass bridges, and balsa wood) was investigated for glass-fibre-reinforced sandwich specimens with and without flame retardants applied on the fabrics, in the matrix, and on surface for each specimen at the same time. Times to failure were increased up to a factor of 4. The intumescent coating prolongs the time to failure significantly. What is more, using the intrinsic potential of the front skin together with the core to protect a load bearing back skin in sandwich panels, the design of the core – here using the wood core – is the most promising approach.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Andreas Hörold, Bernhard SchartelORCiD, Volker Trappe, Manfred Korzen, J. Bünker
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Composite Structures
Jahr der Erstveröffentlichung:2017
Organisationseinheit der BAM:5 Werkstofftechnik
5 Werkstofftechnik / 5.3 Mechanik der Polymerwerkstoffe
7 Bauwerkssicherheit
7 Bauwerkssicherheit / 7.3 Brandingenieurwesen
7 Bauwerkssicherheit / 7.5 Technische Eigenschaften von Polymerwerkstoffen
Verlag:Elsevier
Jahrgang/Band:160
Erste Seite:1310
Letzte Seite:1318
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Composite; Core materials; Fire resistance; Fire stability; Glass-fibre-reinforced plastics
Themenfelder/Aktivitätsfelder der BAM:Infrastruktur
Infrastruktur / Fire Science
DOI:https://doi.org/10.1016/j.compstruct.2016.11.027
ISSN:0263-8223
ISSN:1879-1085
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:08.12.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:20.01.2017