Experimental investigation and modeling of temperature-dependent flexural strength of hybrid composite rods

Malmorad, M.; Rahmani, Khosrow; Sarfaraz, Roohollah

doi:10.1016/j.mechmat.2020.103572

Cited by 4 publications

(7 citation statements)

References 32 publications

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“…At RT, compressive strength of CFRP composites is lower than the tensile strength. 14 Therefore, failure in the specimen is observed first at the top surface where maximum stress is exerted.…”

Section: Failure Modesmentioning

confidence: 99%

“…At subzero temperatures, the composite properties get enhanced due to improved critical stresses and a change of failure mode from compressive micro‐buckling to tensile breakage was reported. The flexural strength of carbon/glass hybrid composites at different temperatures ranging from RT to 180°C was also investigated 14 . The reduction in the property was modeled using newly developed theoretical model for temperature dependent flexural strength.…”

Section: Introductionmentioning

confidence: 99%

“…The flexural strength of carbon/glass hybrid composites at different temperatures ranging from RT to 180 C was also investigated. 14 The reduction in the property was modeled using newly developed theoretical model for temperature dependent flexural strength.…”

mentioning

confidence: 99%

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Effect of temperature on flexural and interlaminar shear strength properties of carbon‐epoxy composites: Experiment and modeling

Nema,

Mallineni,

Penumakala

et al. 2024

Polymer Composites

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Carbon fiber composites are known for excellent specific mechanical properties at room temperature. It is important to model the effect of temperature on flexural strength and interlaminar shear strength (ILSS). In this study, T700 carbon fiber composites with two different epoxy resins (Epofine, LY556) were prepared using filament winding and named as TE and TL composites. The dynamic mechanical analysis (DMA) tests revealed Tg of 177 and 192°C for TE and TL composites, respectively. Three‐point bending (flexural) and short‐beam shear (ILSS) tests were performed at −20, 0, RT, 90, 105, 150, 170, and 200°C. It was observed that flexural strength and ILSS decreases linearly with increase in temperature. Fracture analysis of flexural samples revealed fiber breakage at −20°C and micro‐buckling at elevated temperature are dominant failure mechanisms. Fracture analysis of ILSS samples showed delamination with microcracking at −20°C and plastic deformation of matrix at elevated temperature. A new empirical model was proposed to predict the temperature dependent flexural strength and ILSS. With this model, variation of flexure strength and ILSS with temperature can be estimated from respective values at RT, Tg and storage modulus values from DMA, thus extensive experimentation at high temperatures can be avoided.Highlights Mechanical properties of filament wound composites are tested from −20 to 200°C. Flexural strength and ILSS linearly decreases with increase in temperature. Fiber breakage at −20°C and micro bucking at 200°C are dominant in flexure. Delamination at −20°C and plastic deformation at 200°C are dominant in ILSS. Analytical model for finding temperature dependent flexural strength and ILSS.

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Section: Failure Modesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of temperature on flexural and interlaminar shear strength properties of carbon‐epoxy composites: Experiment and modeling

Nema,

Mallineni,

Penumakala

et al. 2024

Polymer Composites

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“…The results showed that flexural properties, including strength and modulus, decreased as the temperature increased. 16,17 Shen et al studied the tensile behavior of interlayer hybrid FRP composites, comprising polypropylene (PP) and glass fabrics with an epoxy resin as the matrix, and a central layer of glass fabric. The experimental results indicated that the glass/PP FRP composites exhibited higher stiffness and ductility compared to traditional FRP composites, thereby demonstrating superior mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Malmorad et al used Dynamic Mechanical Analysis (DMA) to analyze pultruded carbon/glass/epoxy specimens, followed by three‐point bending experiments at various elevated temperatures. The results showed that flexural properties, including strength and modulus, decreased as the temperature increased 16,17 . Shen et al studied the tensile behavior of interlayer hybrid FRP composites, comprising polypropylene (PP) and glass fabrics with an epoxy resin as the matrix, and a central layer of glass fabric.…”

Section: Introductionmentioning

confidence: 99%

Mechanics behavior and failure mechanism of the intralayer carbon/glass hybrid rod

Zhang,

Che,

Pei

et al. 2024

Polymer Composites

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The carbon/glass hybrid rod exhibits high tensile strength, light weight, and strong corrosion resistance. However, the bottleneck of interlayer splitting exists in the interlayer hybrid rod, severely impeding safe operation. To solve the problem of rod splitting, this paper proposed a new scheme of an intralayer carbon/glass hybrid rod. Based on the material constitutive model, a full‐scale simulation model was developed. The stress distribution and deformation of the hybrid rod were analyzed and the progressive damage mechanism of the hybrid rod was explained. The results indicated that, for the intralayer carbon/glass hybrid rod, (a) the ultimate experimental tensile load witnessed a significant increase, rising by 14.0% from 452.4 to 515.7 kN compared to the interlayer hybrid rod; (b) the numerical model predicted the tensile load of 525.9 kN, with an error of 1.9% compared to the test result, meeting engineering accuracy requirements; (c) the elastic deformation stage saw a 146.7% increase from 280.2 to 691.3 MPa in the maximum axial stress of the carbon‐fiber layer, and a 120% increase from 89.8 to 198.0 MPa in the maximum radial stress of the glass fiber layer as the tensile displacement increased from 0.16 to 0.32 mm. In conclusion, the intralayer carbon/glass hybrid rod proposed in this paper can significantly improve the tensile strength compared to the interlayer hybrid rod, which can accelerate the application of carbon/glass hybrid rods in oil and gas fields.Highlights According to the problem of interlayer splitting in the interlayer carbon/glass hybrid rods, a novel scheme of an intralayer carbon/glass hybrid rod was proposed. Based on the material constitutive model, a full‐scale simulation model of an intralayer carbon/glass hybrid rod was developed to analyze the stress distribution and deformation response under tensile load. The dynamic progressive damage analysis method for intralayer carbon/glass hybrid rods was proposed to reveal the damage evolution mechanism.

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Flexural properties of jute/kenaf/glass fibre reinforced nano-composite

Sathish,

Saravanan,

Arunachalam

et al. 2024

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Experimental investigation and modeling of temperature-dependent flexural strength of hybrid composite rods

Cited by 4 publications

References 32 publications

Effect of temperature on flexural and interlaminar shear strength properties of carbon‐epoxy composites: Experiment and modeling

Effect of temperature on flexural and interlaminar shear strength properties of carbon‐epoxy composites: Experiment and modeling

Mechanics behavior and failure mechanism of the intralayer carbon/glass hybrid rod

Flexural properties of jute/kenaf/glass fibre reinforced nano-composite

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