Fraunhofer Institute for Fire Behavior
Cone Calorimeter according to ISO 5660-1
Modus Operandi
The specimen is irradiated with a defined heat flux in a typical range of 25 kW/m² to about 100 kW/m². Ignition of decomposition products is supported by an electrical spark igniter. The oxygen, carbon monoxide and carbon dioxide content in the exhaust gas are analyzed. The heat release rate is calculated by the oxygen consumption principle. In addition the smoke release is monitored by light extinction of a helium-neon laser beam crossing the exhaust duct. Furthermore the specimen mass is contiuously determined during the combustion process.
Application
Determination of quantitative parameters to evaluate the fire behavior, e.g. ignition time and re-extinction, heat release rate, smoke emission, emergence of CO and CO2, MARHE value according to DIN EN 45545-2
Oxygen Index According to EN ISO 4589-2
Modus Operandi
Determination of the minimum concentration of oxygen that is required to support the combustion of a specimen.
A specimen bar is ignited at the top surface by a propane flame in defined oxygen-nitrogen-mixture. Burning behavior and duration are observed. By changing the oxygen content in the gas atmosphere a test series is examined to determine the lowest oxygen content supporting the combustion process.
Bunsen Burner Test Based on UL 94-V
Modus Operandi
Determination of flammability and afterglow of plastic bar by Bunsen burner based on UL 94-V.
Application
Flammability tests of plastics bar
Vertical Small Burner Test (according to AITM 2.0002)
Modus Operandi
Determination of vertical flame propagation and after glow time in a draft-free chamber.
Application
Determination of fire duration