http://www.cnr.it/ontology/cnr/individuo/prodotto/ID42742
Thermal response to fire of a fibre-reinforced sandwich panel: Model formulation, selection of intrinsic properties and experimental validation (Articolo in rivista)
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- Label
- Thermal response to fire of a fibre-reinforced sandwich panel: Model formulation, selection of intrinsic properties and experimental validation (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Alternative label
Galgano A., Di Blasi C., Branca C., Milella E (2009)
Thermal response to fire of a fibre-reinforced sandwich panel: Model formulation, selection of intrinsic properties and experimental validation
in Polymer degradation and stability
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Galgano A., Di Blasi C., Branca C., Milella E (literal)
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- ISI Web of Science (WOS) (literal)
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- ISTITUTO DI RICERCHE SULLA COMBUSTIONE
UNIVERSITA' DI NAPOLI FEDERICO II DIPARTIMENTO DI INGEGNERIA CHIMICA (literal)
- Titolo
- Thermal response to fire of a fibre-reinforced sandwich panel: Model formulation, selection of intrinsic properties and experimental validation (literal)
- Abstract
- A predictive model is formulated for the fire response of a glass reinforced plastic panel, consisting of two
glass-fibre/polyester skins and Vermiculux sandwich material (core) in between. Polymer conversion
takes place according to a first-order decomposition reaction and an n-order combustion reaction both
with an Arrhenius-type dependence on temperature. Intrinsic kinetic parameters have been estimated
by re-examination of thermogravimetric data at four heating rates, resulting in activation energies for
the two steps of 128 and 150 kJ/mol, respectively. Physical processes are modelled by the unsteady, onedimensional
conservation equations taking into account heat transfer by convection and conduction,
convective mass transfer, surface heat transfer, effective thermal conductivity, moisture evaporation,
ablation of the heat-exposed surface at a critical temperature and property variation. Simulated process
dynamics, using intrinsic values for all the model parameters, are highly influenced by the behaviour of
the heat-exposed skin which shows three main regimes: I) very rapid conversion of a thin surface layer
(fast heating regime), II) slowing down of the conversion processes following the formation of a thick
insulating fibre glass layer (slow heating regime) and III) a new enhancement in the reaction rates as
a consequence of surface collapse and ablation (ablation regime). Good agreement is obtained for the
predicted and measured temperatures for both a single skin composite plate and a sandwich panel
loaded with a hydrocarbon flame. (literal)
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