Effect of pre‐tension on tensile strength of glass fibers‐epoxy composite reinforced with shape memory alloy wire

Khazaie, Masoud; Eslami‐Farsani, Reza; Khalili, S.M.R.

doi:10.1002/pc.24751

Cited by 7 publications

(5 citation statements)

References 18 publications

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“…It reveals that the pulling force or the pulling speed could get fibers evenly and unbent. [ 3,11,14,21,22 ]…”

Section: Resultsmentioning

confidence: 99%

“…It reveals that the pulling force or the pulling speed could get fibers evenly and unbent. [3,11,14,21,22] From Figure 5, it is clearer that fibers were almost parallel with each other for the specimens for 100, 150, and 200 g. Small defects like fiber breaking are found in Figure 5B and Figure 5C. It reveals that initial defects like fiber breaking can be introduced for large pretension to the fiber.…”

Section: Load and Displacement Curvesmentioning

confidence: 88%

“…Many scholars have studied the effect of fiber waviness on the properties of FRP. [11][12][13][14][15] Tensile properties of the fiber-reinforced composites drastically decreased with an increase in the magnitude of fiber waviness which acted as local shear stress concentrators. However, pretension of FRP will not only reduce waviness of fiber, but also have other effects.…”

Section: Introductionmentioning

confidence: 99%

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Failure mechanism of unidirectional basalt fiber‐reinforced polymer composites with pretension of fiber yarns

Zhao

Wang

et al. 2022

Polymer Composites

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The pultrusion process has received increasing attention because of its high productivity, low cost, and good product quality. During the pultrusion process, the pulling and pretension force is a key factor to control the quality of the products. In this paper, the effect of the pretension force on the tensile strength of basalt fiber‐reinforced polymer (BFRP) composites was studied. The pretension force was controlled using different weights. Tensile tests were performed on the BFRP specimens and the microscopic analysis was examined by scanning electron microscopy. The results showed that the static tensile strength of specimens climbed up initially, followed by a decrease with the increase of pretension weights. Three microscopic changes under different pretension forces were found and discussed to explain the damage and failure mechanism. It is essential to optimize the pretension force to improve the strength quality for the pultrusion products of BFRP.

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“…It reveals that the pulling force or the pulling speed could get fibers evenly and unbent. [ 3,11,14,21,22 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Load and Displacement Curvesmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Failure mechanism of unidirectional basalt fiber‐reinforced polymer composites with pretension of fiber yarns

Zhao

Wang

et al. 2022

Polymer Composites

View full text Add to dashboard Cite

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“…[ 4–7 ] Particularly, they are used in the form of wires (fibers), strips, layers, as well as spiral springs to improve and control the behavior of mechanical structures such as rods, beams, plates, and shells. [ 8–15 ] In recent years, much research has been done on the use of SMA wires to increase or delay the bucking temperature of composite structure. Among those available, Kumar and Singh [ 16 ] analyzed the thermal buckling and post‐buckling of multilayer composite plates containing SMAs using a nonlinear finite element method (FEM).…”

Section: Introductionmentioning

confidence: 99%

Thermal buckling of trapezoidal composite laminated plates with embedded shape memory alloys

2021

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The present work deals with thermal buckling of trapezoidal composite plates with embedded shape memory alloy (SMA) wires. In order to estimate the thermomechanical behavior of SMAs, Brinson's model is applied. The thermal buckling equations are derived based on first‐order shear deformation theory, and then solved by means of two‐dimensional generalized differential quadrature method. A parametric study is performed to demonstrate the influence of some parameters such as volume fraction and pre‐strain of SMA wires, the geometric properties, lay‐up configuration, as well as boundary conditions on the critical buckling temperature of trapezoidal composite plates. Numerical results state that the positive effects of SMA wires are restricted to a limited range of thickness and temperature. Results also show that SMA wires can play a destructive role in the thermal buckling behavior of trapezoidal plates, depending on the geometry of the structure, stacking sequence of layers, and boundary conditions.

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“…Khazaei et al. 19 evaluated the potential of superelastic SMA wire to enhance the tensile strength of a glass fiber-reinforced epoxy composite. The specimens were placed under tensile loading (pre-tension) and unloaded before ultimate tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Study on the effective parameter of buckling behavior of cylindrical composite shells with embedded SMA wires

Khalili

Akbari

2019

Journal of Reinforced Plastics and Composites

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In this study, the buckling behavior of the cylindrical composite shells embedded with shape memory alloys is investigated experimentally. The laminated composite shells are fabricated from carbon-epoxy composite by filament-winding process with two different stacking sequences. The shape memory alloy wires with the shape memory effect and superelastic properties are placed between plies 2 and 3 of the four layers laminate with zero and 5% tensile pre-strain. Also, the effects of the number of embedded shape memory alloys wires including zero, four, and six wires are studied. Two boundary conditions CS–CS and SS–SS are used to perform the buckling test. Results show that the critical buckling load of the laminated cylindrical shells increases by using the shape memory alloy wires. It is observed that shape memory effect property of shape memory alloy wires is more effective than the other parameters. Also, from comparing the results, it is obtained that the fiber orientation and the boundary condition can change the effect of shape memory alloy wires on the buckling behavior of composite shell.

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Effect of pre‐tension on tensile strength of glass fibers‐epoxy composite reinforced with shape memory alloy wire

Cited by 7 publications

References 18 publications

Failure mechanism of unidirectional basalt fiber‐reinforced polymer composites with pretension of fiber yarns

Failure mechanism of unidirectional basalt fiber‐reinforced polymer composites with pretension of fiber yarns

Thermal buckling of trapezoidal composite laminated plates with embedded shape memory alloys

Study on the effective parameter of buckling behavior of cylindrical composite shells with embedded SMA wires

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