Abstract:
This study describes the measurement
uncertainty propagation of the incident radiative heat flux
density quantity associated with different exposure
conditions of the heat flux meter, taking into account the
convective effects in reaction to fire tests.
To accomplish this aim, considering the complexity and
non-linearity of the applied mathematical models to perform
the indirect measurement of the mentioned quantity, the
Monte Carlo method approach was selected.
The use of this numerical approach allows to determine
the quality of the measurements within a high accuracy level
and to overcome the main constrains found in other
methods, specially the GUM method, which can only
provide an approximate solution for this metrological
problem.
The experimental examples studied concern the reaction
to fire testing (the room-corner test and the flooring radiant
panel test) with different exposure conditions of the heat
flux meter used. For each case, the applied mathematical
model is described and an analysis of the input uncertainty
contributions is presented
