Title:
Tensile Behavior of Fiber-Reinforced Polymer Sheets Under Elevated Temperatures
Author(s):
Muhammad Faizan Qureshi and Shamim A. Sheikh
Publication:
Structural Journal
Volume:
119
Issue:
5
Appears on pages(s):
179-192
Keywords:
DOI:
10.14359/51734664
Date:
9/1/2022
Abstract:
As part of a comprehensive study on the effects of climate change, tensile tests were performed on glass fiber-reinforced polymer (GFRP) and carbon FRP (CFRP) sheets under different temperature loadings to simulate field conditions. Specimens were loaded under two scenarios—that is, sustained temperature (ST) for 15 minutes followed by monotonic load until failure, and sustained deformation or sustained load (SD/SL) while the temperature was increased until the specimen failed. The elevated temperature caused a sharp decrease in the mechanical properties of the FRP as the temperature approached the glass-transition temperature (Tg) of epoxy. Beyond Tg, almost 40% and 50% residual tensile strength were retained by the GFRP and CFRP sheets, respectively. Elevated temperatures also shifted the failure pattern from brittle to softer failure due to epoxy softening. An equation is proposed for FRP properties subjected to elevated temperatures.
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