Measuring properties for material decomposition modeling

Lattimer, Brian Y.; Ouellette, Jason; Trelles, Javier

doi:10.1002/fam.1031

Cited by 19 publications

(8 citation statements)

References 9 publications

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“…The numerical validation was also carried out by looking at the mass balance of species, to assess the ability of FDS Temperature ranges are the measurement range applied on our materials. A two-step mechanism is given for the isophtalic polyester decomposition [26] and a three-stage reaction for the balsa wood [72]. *The kinetic parameters of balsa wood are defined for a heating rate of 8 K min À1…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

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Modelling decomposition and fire behaviour of small samples of a glass‐fibre‐reinforced polyester/balsa‐cored sandwich material

et al. 2012

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This publication presents the experimental and numerical methods to model the devolatilization process of a glass‐fibre‐reinforced polyester/balsa‐cored sandwich material on small scale. The fundamental modelling of the source term in pyrolysis‐based fire simulations requires as input data the thermochemical properties of solid fuel and the kinetic parameters of the devolatilization process. First, the thermal decomposition of both elements composing the sandwich structure was studied by thermogravimetry coupled with gas analysis, in air and pure nitrogen atmospheres at several heating rates, in order to define a comprehensive multi‐step reaction pathway. A differential equation system is defined to model these decomposition processes. The kinetic parameters were then estimated by solving the system of equations by an inverse problem. Second, the fire behaviour of each element was studied separately and then combined in the sandwich structure on the cone calorimeter. In addition, numerical simulations with Fire Dynamics Simulator were performed to gradually assess the ability of the model(s) to reproduce each element composing the sandwich structure. Numerical and experimental results are compared and then discussed. Overall, the model provides a good agreement with the experimental data and encourages to model higher scales. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

“…A two‐step mechanism is given for the isophtalic polyester decomposition and a three‐stage reaction for the balsa wood .…”

Section: Fire Behaviour At Materials Scalementioning

confidence: 99%

Modelling decomposition and fire behaviour of small samples of a glass‐fibre‐reinforced polyester/balsa‐cored sandwich material

et al. 2012

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“…The third method consists in determining the thermal properties using fitting methods [ 28 , 29 , 30 ] on the temperature and/or the mass of the sample measured during a totally controlled test (e.g., the Thermal Decomposition Apparatus (TDA) method [ 29 ]). More recently, an inverse method was also used to determine the thermal conductivity of a carbon fibre/epoxy laminates based on controlled experimental test [ 31 ].…”

Section: Review Of the Literaturementioning

confidence: 99%

Modelling Behaviour of a Carbon Epoxy Composite Exposed to Fire: Part I—Characterisation of Thermophysical Properties

et al. 2017

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Thermophysical properties of a carbon-reinforced epoxy composite laminate (T700/M21 composite for aircraft structures) were evaluated using different innovative characterisation methods. Thermogravimetric Analysis (TGA), Simultaneous Thermal analysis (STA), Laser Flash analysis (LFA), and Fourier Transform Infrared (FTIR) analysis were used for measuring the thermal decomposition, the specific heat capacity, the anisotropic thermal conductivity of the composite, the heats of decomposition and the specific heat capacity of released gases. It permits to get input data to feed a three-dimensional (3D) model given the temperature profile and the mass loss obtained during well-defined fire scenarios (model presented in Part II of this paper). The measurements were optimised to get accurate data. The data also permit to create a public database on an aeronautical carbon fibre/epoxy composite for fire safety engineering.

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“…This combination of matrix and reinforcement was chosen as the subject of this work because it is the most prevalent configuration in the composites market, it was the easiest system to procure, and provided the simplest procedure to fabricate samples. The majority of previous work to characterize reinforced polymer composites has been performed on pure materials or composites of a single composition; however, there have been a few notable efforts made to address the effect of composite composition on the burning behavior …”

Section: Introductionmentioning

confidence: 99%

“…The study was able to produce reasonable predictions of the bench‐scale experimental data and concluded that there was an indeterminate importance of detailed multireaction schemes in pyrolysis modeling. Lattimer et al . determined the properties of a woven glass brominated vinyl ester composite using data collected in thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and bench‐scale data in a novel gasification apparatus.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis model for multiple compositions of a glass reinforced unsaturated polyester composite

McKinnon

Martin

Stoliarov

2019

J of Applied Polymer Sci

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This work describes the application of a parameter determination methodology to complicated multicomponent systems with a focus on developing pyrolysis models that can predict fire response as a function of the material composition. Thermogravimetric analysis, differential scanning calorimetry, microscale combustion calorimetry, an absorption coefficient measurement, and radiationdriven gasification experiments were conducted on fiberglass reinforced unsaturated polyester composites comprised of various ratios of matrix to reinforcement phases to fully parameterize the pyrolysis model. A single set of properties was defined for each of the reinforcement and matrix phases and the properties were validated against experimental data collected outside the model calibration conditions. This study demonstrated the ability of a pyrolysis model, parameterized through a systematic methodology, to produce pyrolyzate gas production rate predictions for the composites to within 20% of the experimental measurements and emphasized the implications for the use of pyrolysis models in the design of composites.

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Measuring properties for material decomposition modeling

Cited by 19 publications

References 9 publications

Modelling decomposition and fire behaviour of small samples of a glass‐fibre‐reinforced polyester/balsa‐cored sandwich material

Modelling decomposition and fire behaviour of small samples of a glass‐fibre‐reinforced polyester/balsa‐cored sandwich material

Modelling Behaviour of a Carbon Epoxy Composite Exposed to Fire: Part I—Characterisation of Thermophysical Properties

Pyrolysis model for multiple compositions of a glass reinforced unsaturated polyester composite

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