High-Temperature Effect on the Tensile Mechanical Properties of Unidirectional Carbon Fiber-Reinforced Polymer Plates

Zhang, Yongqiang; Li, Yue; Zhang, Jialei; Pan, Jinwu; Zhang, Li; Tan, Fuli; Hong-jian, Wei; Zhang, Wei

doi:10.3390/ma14237214

Cited by 16 publications

(7 citation statements)

References 19 publications

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“…In comparison, CFRP has a superior performance, its tensile strength is 8–10 times that of steel, and its density is only 1/5 that of steel. Moreover, its corrosion rate is only 1/1000 that of steel, or even lower [ 1 , 2 ]. Therefore, CFRP cables have been considered for bridge structures since 1982 [ 5 ].…”

Section: Discussion and Predictionmentioning

confidence: 99%

“…Carbon fiber-reinforced polymer (CFRP) is recognized in engineering as an ideal substitute for traditional steel tendons in harsh environments [ 1 , 2 , 3 , 4 , 5 ] due to its high strength, light weight, and high corrosion resistance, which can effectively reduce structural weight and improve structural durability [ 6 , 7 , 8 ]. In the 1980s, Japan, the United States, and other countries began to study its engineering applications [ 9 , 10 ] and the U.S. Specification ACI 440.4R-04 [ 11 ] recommends the use of CFRP cables as a prestressing material.…”

Section: Introductionmentioning

confidence: 99%

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Testing and Evaluation of Flexural Tensile Strength of Prestressed CFRP Cables

et al. 2022

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To expand the application scope of prestressed carbon fiber-reinforced polymer (CFRP) cables in civil engineering, the ultimate tensile strength of these cables was tested and evaluated under bending conditions. First, the study analyzed the tensile failure mechanism of CFRP cables under bending conditions based on elastic bending analysis theory. Thereafter, the ultimate stress state of individual tendons and cables was derived and a calculation model for the tensile strength of bent CFRP cables was established. Second, 14 sets of test conditions were created for CFRP cables under bending angles of 20–40° and bending radii of 1.5–3 m. Then, bending tensile tests were conducted to evaluate the effects of the above factors on the ultimate tensile strength, and the correctness of the computational model was verified using experiments. Finally, the ultimate performance of CFRP cables was theoretically predicted using the established model. The results showed that the cable bending tensile strength was associated with the radius r, tensile strength f, and elastic modulus E of the reinforced material and the bending radius R, but was not correlated with the interface buffer material or the bending angle of the steering system. Moreover, the flexural tensile residual strength was only affected by R/r and E/f. When E/f involved conventional material parameters, the residual strength increased nonlinearly with increased R/r. When R/r ≥ 600, the residual strength reached more than 80%. Therefore, R/r at 600 could be used as the design basis for a safe critical radius.

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Section: Discussion and Predictionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Testing and Evaluation of Flexural Tensile Strength of Prestressed CFRP Cables

et al. 2022

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“…Interestingly, when the temperature is lower than the glass transition temperature ( T g ), the mode I fracture toughness changes little, while above the T g , it drops sharply. Zhang et al 15 analyzed the tensile property of unidirectional carbon fiber reinforced polymer plates at temperatures ranging from 20 to 600°C. According to the findings, the tensile strength significantly decreases at high temperatures, falling to 68% and 16% at 200 and 600°C comparing to the RT group, respectively.…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance of adhesively bonded carbon fiber reinforced boron‐modified phenolic resin plastic‐titanium single‐lap joints at high temperature

Ma,

Han,

Ying

et al. 2023

Polymer Composites

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This article characterized the mechanical performance and failure mode of single‐lap joints (SLJs) of carbon fiber reinforced boron‐modified phenolic resin plastic (CF/BPR) and TC4 titanium alloy by quasi‐static tensile tests at four temperatures (25, 100, 175, and 250°C). The experimental results indicated that the shear strength of SLJs is 10.8 MPa at 25°C, which experiences monotonic drop to 80%, 42.6%, and 18.5% with temperature increase from 100 to 175°C, and to 250°C, respectively. Additionally, there was a transformation in the failure mode from composite material failure to cohesive failure in the adhesive along with the temperature increase. The intralaminar elasticities of CF/BPR were predicted using representative volume element (RVE), and the mechanical properties of three types of bondlines (i.e., the interlamination, interface of CF/BPR and the epoxy adhesive layer) were determined by both experiment and predictive methods. A finite element model taking into account the intralaminar damage of CF/BPR and the cohesive behavior of three bondlines was established. The simulated results showed good consistency with the experimental data for failure prediction, and the mechanical performance and damage propagation of SLJs at different temperatures were discussed. This research provides reference for the design and manufacture of high‐temperature bonded structures.Highlights RVE and degradation factor methods evaluate the elasticity of composite material. Four types of damage behaviors are considered in the established FE model. The SLJs exhibit single or multiple failure modes at different temperatures. The mechanical properties of SLJs severely degraded with increasing temperature.

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“…Carbon fiber-reinforced composites are widely used in various industrial sectors, such as in the aerospace, shipbuilding, automotive, and medical fields, due to their excellent properties of high temperature resistance, fatigue resistance, and low specific gravity [1][2][3]. However, variable operational and loading conditions may lead to damage, which can significantly jeopardize the safety of the structural system.…”

Section: Introductionmentioning

confidence: 99%

Deep Learning Approach for Damage Classification Based on Acoustic Emission Data in Composite Materials

Fu-ping

Jiang

et al. 2022

Materials

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Damage detection and the classification of carbon fiber-reinforced composites using non-destructive testing (NDT) techniques are of great importance. This paper applies an acoustic emission (AE) technique to obtain AE data from three tensile damage tests determining fiber breakage, matrix cracking, and delamination. This article proposes a deep learning approach that combines a state-of-the-art deep learning technique for time series classification: the InceptionTime model with acoustic emission data for damage classification in composite materials. Raw AE time series and frequency-domain sequence data are used as the input for the InceptionTime network, and both obtain very high classification performances, achieving high accuracy scores of about 99%. The InceptionTime network produces better training, validation, and test accuracy with the raw AE time series data than it does with the frequency-domain sequence data. Simultaneously, the InceptionTime model network shows its potential in dealing with data imbalances.

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High-Temperature Effect on the Tensile Mechanical Properties of Unidirectional Carbon Fiber-Reinforced Polymer Plates

Cited by 16 publications

References 19 publications

Testing and Evaluation of Flexural Tensile Strength of Prestressed CFRP Cables

Testing and Evaluation of Flexural Tensile Strength of Prestressed CFRP Cables

Mechanical performance of adhesively bonded carbon fiber reinforced boron‐modified phenolic resin plastic‐titanium single‐lap joints at high temperature

Deep Learning Approach for Damage Classification Based on Acoustic Emission Data in Composite Materials

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