Experimental Investigation of Fatigue Capacity of Bending-Anchored CFRP Cables

Wu, Jingyu; Zhu, Yongquan; Li, Chenggao

doi:10.3390/polym15112483

Cited by 45 publications

(41 citation statements)

References 29 publications

(63 reference statements)

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“…In this way, considering more loading cases (as many as possible) can minimize the error with which the elastic constants are determined. The accuracy with which these values are obtained should be higher than the calculation accuracy when considering a single loading state [ 60 , 61 , 62 , 63 , 64 ].…”

Section: Discussionmentioning

confidence: 99%

Calculation of Homogenized Mechanical Coefficients of Fiber-Reinforced Composite Using Finite Element Method

Katouzian,

Vlase,

Itu

et al. 2024

Materials

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Determining the mechanical properties of a composite material represents an important stage in its design and is generally a complicated operation. These values are influenced by the topology and geometry of the resulting composite and the values of the elastic constants of the components. Due to the importance of this subject and the increasing use of composite materials, different calculation methods have been developed over the last fifty years. Some of the methods are theoretical, with results that are difficult to apply in practice due to difficulties related to numerical calculation. In the current paper, using theoretical results offered by the homogenization theory, values of engineering elastic constants are obtained. The finite element method (FEM) is used to determine the stress and strain field required in these calculations; this is an extremely powerful and verified calculation tool for the case of a material with any type of structure and geometry. In order to minimize errors, the paper proposes the method of least squares, a mathematical method that provides the best estimate for the set of values obtained by calculating FEM. It is useful to consider as many load cases as possible to obtain the best estimates. The elastic constants for a transversely isotropic material (composite reinforced with cylindrical fibers) are thus determined for a real case.

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Section: Discussionmentioning

confidence: 99%

Calculation of Homogenized Mechanical Coefficients of Fiber-Reinforced Composite Using Finite Element Method

Katouzian,

Vlase,

Itu

et al. 2024

Materials

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“…Especially, carbon fiber-reinforced polymer (CFRP), glass fiber-reinforced polymer (GFRP), and a combination of the two materials are most commonly used to develop composite structures applicable to aerospace structures, biomedical components, automobile components, sporting equipment, civil infrastructure, and wind turbine blade structures 6 , 7 . Carbon fiber has a higher strength-to-weight ratio, stiffness-to-weight ratio, and fatigue resistance compared to glass fiber, but it has a higher cost 8 , 9 . The relative lower ratio of compressive to tensile strength, a lower strain-to-failure rate, and its inherent catastrophic brittleness properties are disadvantages of CFRP composite material and can hinder their use as structural members that are exposed to flexural and compressive loadings 10 .…”

Section: Introductionmentioning

confidence: 99%

Flexural failure properties of fiber-reinforced hybrid laminated beam subject to three-point bending

Tefera,

Adali,

Bright

2024

Sci Rep

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The present study investigates the flexural failure properties of a hybrid laminate beam subjected to three-point bending. A symmetrically laminated hybrid beam is constructed using high-strain and inexpensive glass fibre on the top layers and low-strain and expensive carbon fiber on the middle layers. Classical lamination plate theory is used to find the stress and strain distribution that occurs due to the bending moment on the compressive side. The theoretical failure limits of the laminated hybrid beam are analyzed considering the targeted span-to-depth ratios, volume fractions of the fibers and hybrid ratios using the Tsai-Wu failure criterion and Matlab codes. Using the graph of failure index versus hybrid ratios, the minimum thickness of carbon fiber needed for the delay of failure and cost efficiency of the laminated hybrid beam is identified by applying the linear interpolation method. The numerical results indicate that the failure index increases with the increasing loading span and decreases when the volume fraction of fiber increases. In particular, the placement of glass fiber on the top layer of the laminated hybrid beam might have contributed to obtaining higher strains and curvatures before the catastrophic failure properties of carbon fiber. The flexural stiffness of the laminates is found to increase when the hybrid ratio increases. Overall, it is noted that the theoretical analysis is one method that is less time-consuming and cost-effective than other alternative approaches, such as finite element methods and experimental tests to estimate the minimum thickness of high-stiffness and the expensive material needed to maintain the strength and stiffness of the hybrid composite structures over long periods.

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“…Steel bar corrosion is one of the main causes of performance deterioration of concrete structures, significantly affecting their structural performance [5][6][7][8][9]. In recent years, the use of fiber-reinforced polymer composite (FRP) bars, replacing steel bars, has been considered an effective solution to the problem of steel bar corrosion [10][11][12][13]. Compared with steel bars, FRP bars have the advantages of high tensile strength, corrosion resistance, light weight, electrical insulation, and fatigue resistance [14,15].…”

Section: Introductionmentioning

confidence: 99%

Research on the Bonding Performance of BFRP Bars with Reactive Powder Concrete

Xiao,

Murong,

Chen

et al. 2023

Buildings

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In recent years, replacing steel bars with basalt fiber-reinforced polymer (BFRP) bars and replacing ordinary concrete with reactive powder concrete (RPC) are considered effective solutions to the corrosion problem of steel bars in ordinary reinforced concrete structures. In order to study the bonding performance between BFRP bars and RPC, a total of 27 bonding specimens were tested by pull-out test. The effects of steel fiber volume content (0%, 1.5%, 2%), protective layer thickness (25 mm, 40 mm, 55 mm, 69 mm), and bond anchorage length of bars (3 d, 4 d, 5 d; d is the diameter of the bars) on the bond performance were studied. The experimental results indicated that the BFRP bar and reactive powder (RPC) concrete interface exhibited better bonding performance, and the steel fibers mixed in RPC can play the role of crack-blocking enhancement in the specimen, which improves the shear and tensile properties of the concrete, thus improving the bond strength between BFRP bar and RPC. Three failure modes were observed in the pull-out tests: BFRP bar shear failure, splitting failure, and concrete shear failure. The bond strengths of BFRP bars and RPC with 0%, 1.5%, and 2% steel fiber content were 24.2 MPa, 32.1 MPa, and 34.5 MPa, respectively. With the increase in bond anchorage length, the ultimate bond strength tended to increase first and then decrease. There may be an optimal bonding length between BFRP bar and reactive powder concrete, and when the optimal bonding length is exceeded, the bond strength decreases with the increase in bonding length. With the increase in the protective layer thickness, the improvement in the bond strength of the BFRP bar and RPC was not very significant.

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Experimental Investigation of Fatigue Capacity of Bending-Anchored CFRP Cables

Cited by 45 publications

References 29 publications

Calculation of Homogenized Mechanical Coefficients of Fiber-Reinforced Composite Using Finite Element Method

Calculation of Homogenized Mechanical Coefficients of Fiber-Reinforced Composite Using Finite Element Method

Flexural failure properties of fiber-reinforced hybrid laminated beam subject to three-point bending

Research on the Bonding Performance of BFRP Bars with Reactive Powder Concrete

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