Mechanical properties of confined damaged concrete strengthened with fiber reinforced polymer wraps

Maraş, Müslüm Murat

doi:10.31202/ecjse.866687

Cited by 2 publications

(5 citation statements)

References 41 publications

(37 reference statements)

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“…Te high load capacity of the cross-ply was due to the longitudinal direction of 0 °unidirectional fbres, which provided resistance during loading [39]. Tis result was in agreement with the values obtained by Basturk [25], where 0/90 GFRP/ PVC had an improved failure load/weight increase of 22% compared to the +45/−45 GFRP/PVC sample. Te angle-ply orientation of the facesheet gave the lowest load-carrying capacity for all core thickness sizes.…”

Section: Tensile Properties Of the Facesheetsupporting

confidence: 90%

“…Te second zone (plateau phase) showed no variation in the load with time. Te plateau phase is formed due to buckling and compaction of the PVC cell walls [25,43]. Te last section (densifcation phase) shows the force increases with a steep slope due to ending of collapse foams resulting in foam densifcation [25,44].…”

Section: Flatwise Compressive Strengthmentioning

confidence: 98%

“…A fatwise compression test of the sandwich structures was performed to determine the strength values and modulus under the loading direction normal to the facesheet [28]. Flatwise compression test is a core-dominated test [25], thus the results from the sample parameters used refect the core characteristics.…”

Section: Flatwise Compressive Strengthmentioning

confidence: 99%

“…Sandwich beams in the edgewise position exhibit high ultimate strength because of the presence of the fbre composite facesheet, whereas brittle-type failure occurs in the fatwise position of the beams [17]. Te orientation of the facesheet layers in the fatwise compression of samples does not exhibit a signifcant variation in load, thus indicating a homogeneous fatwise characteristic [25]. Toygar et al [28] studied the compression properties of sandwich structures with unsymmetrical face thickness of 3.75 mm and 1.4 mm.…”

Section: Introductionmentioning

confidence: 99%

“…Te fbre orientation and size of the facesheet have been reported to infuence the mechanical behaviour of sandwich structures [18,25,26]. Mostafa et al [18] studied the fexural response of PVC foam core and GFRP skins consisting of eight layers (0, 90, 45, −45) s of 2 × 2 twill weave E-glass.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Behaviour of Glass Fibre-Reinforced Polymer/Polyvinyl Chloride Foam Cored Sandwich Structures

Kosgey,

Kanny,

Mwangi

2024

Advances in Materials Science and Engineering

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This study focuses on the fabrication and analysis of the mechanical behaviour of unidirectional (UD) glass fibre-reinforced polymer (GFRP) facesheet and polyvinyl chloride (PVC) foam core sandwich structures fabricated by a vacuum-assisted resin infusion method (VARIM). These sandwich structures are commonly used in marine and wind turbine blade applications. To date, relatively little knowledge about the functional behaviour of UD GFRP compared to composites reinforced with bidirectional mats is available for day-to-day applications. The effects of the facesheet orientation, facesheet thickness, and core thickness on the mechanical behaviour of the specimens were examined. The UD fibres were oriented in cross-ply (0/90), angle-ply (+45/−45), and quasi-isotropic orientations. Various mechanical properties such as tensile, flexural, flatwise compression, and edgewise compression tests were examined. Characterization of the tensile properties of the facesheet showed that the cross-ply orientation had a higher strength than the angle-ply and quasi-isotropic orientations. The flexural load-carrying capacity of the cross-ply facesheet orientation was superior to the other orientations. The increase in the core thickness changed the flexural failure mode from face yield and core shear to core indentation. Flatwise compression (FWC) was tested to determine the core characteristics of the sandwich structure, and the peak loads of 4.90, 1.81, and 3.90 kN were obtained for 10-, 15-, and 20 mm core thicknesses, respectively. Edgewise compression (EWC) exhibited stable end crushing for thinner facesheet, whereas thicker facesheet showed core crushing and buckling. When the facesheet thickness was increased from 1.5 mm to 3 mm in the EWC, the buckling load increase ranged from 2.53% to 44.83% for core thicknesses 10-, 15-, and 20 mm, respectively.

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Section: Tensile Properties Of the Facesheetsupporting

confidence: 90%