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A platform for research: civil engineering, architecture and urbanism
Flexural Response of Cross-Ply Flax Fiber–Reinforced Polymer Skinned Foam Cylinders
The flexural response of 12 2-m-long and 152-mm-diameter fiber-reinforced polymer (FRP) skinned members with foam cores was investigated. Nine cylinders with various flax-FRP (FFRP) laminate arrangements and foam core densities were fabricated and tested in flexure; these were compared with three glass-FRP (GFRP) skinned specimens. Varying the foam density from 32 to was found to be insignificant in FFRP skinned beams because their failure was governed by fiber tensile rupture. However, increasing the foam density increased the capacity of the GFRP skinned members that failed in compression. The most effective ways to increase strength-to-weight and stiffness-to-weight ratios of FFRP skinned cylinders are to increase the number of longitudinal fiber layers and decrease the foam core density. A FFRP cylinder with five longitudinal and three transverse layers was able to develop over 80% the strength-to-weight and stiffness-to-weight ratios as a reference GFRP cylinder, substantially higher than the 30%–50% values seen in coupon tests. Although the FFRP cylinder performed fairly well, further work on the member axial, impact, and durability resistance is recommended.
Flexural Response of Cross-Ply Flax Fiber–Reinforced Polymer Skinned Foam Cylinders
The flexural response of 12 2-m-long and 152-mm-diameter fiber-reinforced polymer (FRP) skinned members with foam cores was investigated. Nine cylinders with various flax-FRP (FFRP) laminate arrangements and foam core densities were fabricated and tested in flexure; these were compared with three glass-FRP (GFRP) skinned specimens. Varying the foam density from 32 to was found to be insignificant in FFRP skinned beams because their failure was governed by fiber tensile rupture. However, increasing the foam density increased the capacity of the GFRP skinned members that failed in compression. The most effective ways to increase strength-to-weight and stiffness-to-weight ratios of FFRP skinned cylinders are to increase the number of longitudinal fiber layers and decrease the foam core density. A FFRP cylinder with five longitudinal and three transverse layers was able to develop over 80% the strength-to-weight and stiffness-to-weight ratios as a reference GFRP cylinder, substantially higher than the 30%–50% values seen in coupon tests. Although the FFRP cylinder performed fairly well, further work on the member axial, impact, and durability resistance is recommended.
Flexural Response of Cross-Ply Flax Fiber–Reinforced Polymer Skinned Foam Cylinders
Tomlinson, Douglas (author) / Fam, Amir (author)
2019-09-28
Article (Journal)
Electronic Resource
Unknown
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