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Comparison of stiffness properties of common coated fabrics

Comparison of stiffness properties of common coated fabrics Woven coated fabrics commonly used for tensile membrane structures are PVC‐coated polyester fabrics and PTFE‐coated glass‐fibre fabrics. Regarding the stiffness of these materials, membrane structure experts frequently point out that glass/PTFE fabrics are “stiffer” than PES/PVC fabrics. However, this statement cannot be verified by existing literature, although numerous publications deal with the stress‐strain behaviour of coated woven fabrics. Available stress‐strain test data are almost impossible to compare, mainly because published stress‐strain data for glass/PTFE refer to materials with higher strengths than the published test data for PES/PVC materials. The aim of the present paper is to compare the stiffness properties of PES/PVC and glass/PTFE fabrics with identical tensile strength properties by means of theoretical investigations and uniaxial tensile tests. The results demonstrate that glass‐fibre fabric indeed exhibits a higher tensile stiffness than comparable polyester fabric for typical working stress ranges between the prestress level and the maximum design strength. However, for lower stress ranges up to approximately three‐quarters of the design strength, the tensile stiffness of glass‐fibre fabrics is identical with or even lower than that of comparable polyester fabric. The transverse strain is considerably higher for the glass‐fibre fabric throughout. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Steel Construction: Design and Research Wiley

Comparison of stiffness properties of common coated fabrics

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References (26)

Publisher
Wiley
Copyright
"Copyright © 2015 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
1867-0520
eISSN
1867-0539
DOI
10.1002/stco.201510030
Publisher site
See Article on Publisher Site

Abstract

Woven coated fabrics commonly used for tensile membrane structures are PVC‐coated polyester fabrics and PTFE‐coated glass‐fibre fabrics. Regarding the stiffness of these materials, membrane structure experts frequently point out that glass/PTFE fabrics are “stiffer” than PES/PVC fabrics. However, this statement cannot be verified by existing literature, although numerous publications deal with the stress‐strain behaviour of coated woven fabrics. Available stress‐strain test data are almost impossible to compare, mainly because published stress‐strain data for glass/PTFE refer to materials with higher strengths than the published test data for PES/PVC materials. The aim of the present paper is to compare the stiffness properties of PES/PVC and glass/PTFE fabrics with identical tensile strength properties by means of theoretical investigations and uniaxial tensile tests. The results demonstrate that glass‐fibre fabric indeed exhibits a higher tensile stiffness than comparable polyester fabric for typical working stress ranges between the prestress level and the maximum design strength. However, for lower stress ranges up to approximately three‐quarters of the design strength, the tensile stiffness of glass‐fibre fabrics is identical with or even lower than that of comparable polyester fabric. The transverse strain is considerably higher for the glass‐fibre fabric throughout.

Journal

Steel Construction: Design and ResearchWiley

Published: Nov 1, 2015

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