Probabilistic Uncertainty Modeling for Thermomechanical Analysis of Plasterboard Submitted to Fire Load

Abstract

The paper deals with a probabilistic modeling of the thermo-mechanical behavior of cardboard-plaster-cardboard (CPC) multilayer plates submitted to re load. The proposed model takes into account data and model uncertainties. This work is justied by the fact that re resistance tests of plasterboard-lined partitions are made impossible when their dimensions exceed those of furnaces. A fundamental key to solve such a problem is the development and the experimental validation of a deterministic and probabilistic model of CPC multilayer submitted to re load. The rst step of this work concerns the constitution of an experimental thermo-mechanical data base for a CPC multilayer and for its components. These experimental tests are carried out by the use of a bench test specially designed for this work. The second step is the development of an homogenization thermo-mechanical mean model for the CPC multilayer. The third step is the development of a probabilistic model of uncertainties based on the

A Heat-Transfer Rate Inducing System (H-TRIS) Test Method

“…For instance, a simplified formulation for calculating the heat flux losses at the exposed surface is: Control of fire science experiments by incident radiant heat flux is not a novel concept [56]; indeed it has been widely implemented for more than five decades in a wide variety of fire science studies (e.g. [64][65][66][67][68][69][70]). Commercially available fire testing apparatus such as the Cone Calorimeter [71,72] or Fire Propagation Apparatus [73,74] are widely used for small-scale tests with control by incident radiant heat flux.…”

Uncertainty Quantification

“…In this section, we present a stochastic modeling of uncertainties for performing a robust thermomechanical analysis of a complex multilayer composite plate made up of a cardboard-plaster-cardboard (CPC) and submitted to a thermal loading [174,175].…”

Effects of polypropylene fibre type on occurrence of heat-induced concrete spalling

“…1). Whilst this is not the first time that mobile radiant panels have been used for thermal testing of construction materials [16,17], to the authors' knowledge it is the first time that such an approach has been taken in an effort to understand and simulate the time-history of heat flux in a standard fire resistance test based on through thickness 01005-p. 2 …”