Effect of Temperature on the Load-Carrying Capacity of Fiber Glass Reinforced Plastic Beams

by S. Daniali, Lamar Univ, United States,

Document Type: Proceeding Paper

Part of: Structural Materials


This paper describes an experimental investigation into the behavior of two T shaped beams made of fiber glass reinforcement and polyester or vinylester binders. Tests were performed at both ambient conditions and an elevated temperature of 130°F with 90% relative humidity. Results of the tests indicate that the polyester beams carried less load than similar vinylester beams. Also, polyester beams experienced 30 to 40% loss of strength when they were exposed to the elevated temperature. Vinylester beams lost only 20%. The beam with solid web failed due to lateral torsional buckling, and the beams with cavity web failed due to web buckling.

Subject Headings: Fiber reinforced polymer | Load bearing capacity | Glass reinforced plastics | Beams | Temperature effects | Web beams | Glass | Buckling

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