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Reliable in-plane shear modulus for pultruded FRP shapes
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Nguyen, T. T., Chan, Tak-Ming and Mottram, J. Toby (2018) Reliable in-plane shear modulus for pultruded FRP shapes. Proceedings of the ICE - Structures and Buildings, 171 (11). 818-829 . doi:10.1680/jstbu.16.00194 ISSN 0965-0911.
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Official URL: https://doi.org/10.1680/jstbu.16.00194
Abstract
Presented is a simple test method to determine the in-plane shear properties of pultruded materials where the mat reinforcement is of random oriented continuous fibres. Existing standard test methods have a number of weaknesses and a number of them can be overcome by using the 10 degree off-axis tensile test method, proposed in 1976 by Chamis and Sinclair. Straightsided specimens have unidirectional fibre reinforcement oriented at 10o to the direction of tensile load. Tension generates a biaxial in-plane stress state that, by employing stress and strain transformations, enables the shear modulus to be determined. The mean shear moduli for the web material in four shapes, from 20 coupon tests in batches of five, are found to be consistent and from 4.2 - 4.8 GPa. Given that the 10 degree off-axis coupon is easy to be prepared, with Text - 2/35 no technical difficulties this non-standard method can be recommended to characterize the in-plane shearing of pultruded materials having continuous filament (or strand) mat reinforcement.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
| Library of Congress Subject Headings (LCSH): | Materials, Materials science, Strength of materials, Fiber-reinforced concrete | ||||||
| Journal or Publication Title: | Proceedings of the ICE - Structures and Buildings | ||||||
| Publisher: | I C E Publishing | ||||||
| ISSN: | 0965-0911 | ||||||
| Official Date: | November 2018 | ||||||
| Dates: |
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| Volume: | 171 | ||||||
| Number: | 11 | ||||||
| Page Range: | 818-829 | ||||||
| DOI: | 10.1680/jstbu.16.00194 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Date of first compliant deposit: | 4 April 2017 | ||||||
| Date of first compliant Open Access: | 30 March 2018 | ||||||
| Funder: | Vietnam International Education Development (VIED), University of Warwick. School of Engineering |
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