Mechanical Properties of Polyester-Coated Fabric Membrane Material Subjected to Uniaxial Loading at Elevated Temperatures
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 7
Abstract
Polyester-coated fabric has been widely used in membrane structures. However, the mechanical properties of polyester-coated fabric at elevated temperatures have not been well studied, limiting its applications in the fire-resistant analysis. This work concerns the temperature effects on the mechanical properties of the polyester-coated fabric membrane material from four common brands, with an experimental study on polyester-coated fabric specimens at 23°C, 70°C, 100°C, 150°C, 200°C, 230°C, and 250°C under uniaxial loading, respectively. The results indicate that the elastic modulus and the ultimate tensile strength of polyester-coated fabric membrane material decrease with temperature increasing. The breaking elongation first increases and then decreases with increasing temperature. The results are utilized to obtain simple empirical equations by applying membrane structure design and fire-resistant analysis. Change laws for elastic modulus, ultimate tensile strength, and breaking elongation with temperatures are proposed as equations; the constitutive relation of polyester-coated fabric membrane material with temperatures is also fitted by one two-stage equation. Of considerable significance is promoting the research of membrane structure design and fire-resistant analysis.
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Data Availability Statement
1.
Data in Table 1 used during the study were provided by a third party. Direct requests for these materials might be made to the provider, as indicated in the Acknowledgments.
2.
All data generated or used during the study appear in the published article.
Acknowledgments
This work was funded by the Beijing Municipal Commission of Education (Grant No. KM201710005017). The technical parameters of the polyester-coated fabric membrane material and specimens were provided by Covertex Membranes (Shanghai) Co., Ltd. and Broadwell (Shenzhen) Technology Co., Ltd. Furthermore, the authors are deeply grateful for the supports of Professor Martin Mensinger, the head of the Chair of Metal Structures at the Technical University of Munich.
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 7 • July 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jul 29, 2020
Accepted: Nov 23, 2020
Published online: May 4, 2021
Published in print: Jul 1, 2021
Discussion open until: Oct 4, 2021
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