Ignition resistance of wood building structures exposed to a firebrand shower D. P. Kasymov, M. V. Agafontsev, V. V. Perminov [et al.]
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ArticleContent type: Текст Media type: электронный Subject(s): древесина | инфракрасная диагностика | огнестойкость | тепловой потокGenre/Form: статьи в журналах Online resources: Click here to access online
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Combustion, explosion, and shock waves Vol. 59, № 2. P. 206-214Abstract: The interaction of a firebrand shower with some types of combustible building materials and wood structures was studied experimentally. The heat flux generated by firebrands was determined, and the temperature fields of the most heat-stressed sections of the structures were analyzed. The heating rate of samples was estimated based on infrared thermography data. Under the selected experimental conditions, the bench sample was found to be the most resistant to ignition. Estimation of the near-surface temperature of the bench element showed that after 15-min continuous exposure to firebrands, the temperature in the zone of maximum accumulation of firebrands did not exceed 130 C. The wood fence model was found to be most prone to ignition (ignition delay time more than 15% lower compared to the other structures.
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The interaction of a firebrand shower with some types of combustible building materials and wood structures was studied experimentally. The heat flux generated by firebrands was determined, and the temperature fields of the most heat-stressed sections of the structures were analyzed. The heating rate of samples was estimated based on infrared thermography data. Under the selected experimental conditions, the bench sample was found to be the most resistant to ignition. Estimation of the near-surface temperature of the bench element showed that after 15-min continuous exposure to firebrands, the temperature in the zone of maximum accumulation of firebrands did not exceed 130 C. The wood fence model was found to be most prone to ignition (ignition delay time more than 15% lower compared to the other structures.
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