Modeling of thermal responses for FRP composites under elevated and high temperatures

Bai, Yu; Vallée, Till; Keller, Thomas

doi:10.1016/j.compscitech.2007.05.039

Cited by 113 publications

(52 citation statements)

References 30 publications

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“…In 2007, Bai et al [28] proposed the chemical kinetics-based thermophysical model by considering the decomposition of matrix resin. Based on the temperaturedependent thermophysical model, 1D thermal model with the effective specific capacity was developed [29]. The predicted temperature responses agreed well with the experimental results.…”

Section: Introductionsupporting

confidence: 64%

“…As shown in Figure 1, convection and radiation play an important role in the rest boundaries, and the heat convective coefficients at the cold face of bottom flange were estimated as 2 W/m 2 K by fitting the temperature profiles at the cold face of the bottom flange [34]. The convective coefficients at inner faces of web and top flange were set as 0 by minimalizing the [29] Emissivity of solid surface, ra Equation (23) [29] difference between modeling temperatures and test results for webs and top flanges. This indicated that convection can be omitted.…”

Section: Basic Modelmentioning

confidence: 99%

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Two-Dimensional Modeling of Thermomechanical Responses of Rectangular GFRP Profiles Exposed to Fire

Zhang

Liu

Sun

et al. 2017

Advances in Materials Science and Engineering

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In the past three decades, one-dimensional (1D) thermal model was usually used to estimate the thermal responses of glass fiber-reinforced polymer (GFRP) materials and structures. However, the temperature gradient and mechanical degradation of whole cross sections cannot be accurately evaluated. To address this issue, a two-dimensional (2D) thermomechanical model was developed to predict the thermal and mechanical responses of rectangular GFRP tubes subjected to one-side ISO-834 fire exposure in this paper. The 2D governing heat transfer equations with thermal boundary conditions, discretized by alternating direction implicit (ADI) method, were solved by Gauss-Seidel iterative approach. Then the temperature-dependent mechanical responses were obtained by considering the elastic modulus degradation from glass transition and decomposition of resin. The temperatures and midspan deflections of available experimental results can be reasonably predicted. The overestimation of deflections could be attributed to the underestimation of bending stiffness. This model can also be extended to simulate the thermomechanical responses of beams and columns subjected to multiside fire loading, which may occur in real fire scenarios.

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Section: Introductionsupporting

confidence: 64%

Section: Basic Modelmentioning

confidence: 99%

Two-Dimensional Modeling of Thermomechanical Responses of Rectangular GFRP Profiles Exposed to Fire

Zhang

Liu

Sun

et al. 2017

Advances in Materials Science and Engineering

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“…Similar approach for the through thickness conductivity of the composite material has been followed by other authors [15,16,18], the new feature of the present work is that the properties of the hot gases are not constant but temperature dependent [17].…”

Section: Thermal Conductivitymentioning

confidence: 62%

Fire Burnthrough Response of CFRP Aerostructures. Numerical Investigation and Experimental Verification

et al. 2011

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Aircraft structures are designed to withstand further to dynamic mechanical loadings thermal loads too. In the event of an external fire (while the aircraft is on the ground) the fuselage structure has to withstand and delay fire penetration. Prolonged burnthrough time is the design target. In the current work, a progressive fire-degradation material model is developed that links decomposition kinetics with the thermophysical properties of polymer composite materials. The material model is then implemented in a FE model to simulate the response of the flat panels under fire burnthrough conditions. Experimental investigation is performed in accordance to the ISO2685:1998 (E) Standard.

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“…Polymers 2015, 7, page-page Bai et al, performed fire endurance experiments on cellular GFRP slabs, DuraSpan 766 slab system from Martin Marietta Composites, and found a thermal conductivity of 0.35 W/m·K, while the thermal conductivity of fiber and of the resin were 1.1 W/m·°C and 0.2 W/m·°C respectively [11].…”

Section: Low Thermal Conductivitymentioning

confidence: 99%

Thermal and Fire Characteristics of FRP Composites for Architectural Applications

Berardi

Dembsey

2015

Polymers

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This paper discusses the main challenges of using fiber reinforced polymers (FRPs) in architectural applications. Architects are showing increased interest in the use of FRPs in modern buildings thanks to FRPs' ability to allow cost effective realization of unique shapes and flexible aesthetics, while accommodating architectural designs and needs. The long-term durability, weathering resistance, and the exceptional mechanical properties have recently suggested the adoption of FRPs for building façade systems in an increasing number of buildings worldwide. However, some challenges for a wider adoption of FRPs in buildings are represented by the environmental and thermal aspects of their production, as well as their resistance to the expected "fire loads". This last aspect often raises many concerns, which often require expensive fire tests. In this paper, the results of cone calorimeter tests are compared with software simulations to evaluate the possibility of designing FRPs on the computer as opposed to current design practice that involves iterative use of fire testing. The comparison shows that pyrolysis simulations related to FRPs are still not an effective way to design fire safe FRPs for architectural applications.

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Modeling of thermal responses for FRP composites under elevated and high temperatures

Cited by 113 publications

References 30 publications

Two-Dimensional Modeling of Thermomechanical Responses of Rectangular GFRP Profiles Exposed to Fire

Two-Dimensional Modeling of Thermomechanical Responses of Rectangular GFRP Profiles Exposed to Fire

Fire Burnthrough Response of CFRP Aerostructures. Numerical Investigation and Experimental Verification

Thermal and Fire Characteristics of FRP Composites for Architectural Applications

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