Effect of carbon nanotubes reinforcement on eigenmodes of multi‐smart core sandwich composite cylindrical shell panels

Shankar, A. N.; Krishna, Sri; Chebolu, Rohinikumar; Singholi, Ajay; Singh, Rasmeet; Rajeshkumar, S.

doi:10.1002/pc.26435

Cited by 10 publications

(5 citation statements)

References 31 publications

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“…The laminated composite cylindrical sandwich shells are modeled and simulated using ABAQUS software. [ 31 ] The material properties considered in Selvaraj et al [ 29 ] : E 1 = 29.49 GPa , E 2 = 6.80 GPa , ν 12 = 0.27, G 12 = 2.71 GPa , G 23 = 2.43 GPa , ρ = 1724 kg/m 3 , G c = 0.6396 MPa, and ρ c = 2384.2 kg/m 3 . The geometry dimensions considered for the simulation are length 0.3 m, width 0.3 m, radius of curvature (R) 0.8 m, core thickness 1 mm and face sheet thickness 1.3 mm.…”

Section: Convergence and Verification Studymentioning

confidence: 99%

Influence of multi‐walled carbon nanotubes reinforced honeycomb core on vibration and damping responses of carbon fiber composite sandwich shell structures

Maneengam

Siddique²,

Selvaraj³

et al. 2022

Polymer Composites

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In the present study, vibration and damping characteristics of the multi‐walled carbon nanotubes (MWCNT) reinforced honeycomb embedded sandwich composite shell structures have been investigated numerically using finite element (FE) method. The efficacy of the FE method by deriving the governing equations using higher order theory is verified by comparing the natural frequencies assessed using ABAQUS 3D FE model. The influence of MWCNT reinforcement, support condition, and radius of curvature on the dynamic performance of honeycomb sandwich shell with carbon fiber reinforced polymer (CFRP) composite face sheets are explored. In addition, the optimal ply orientations of the various configurations of CFRP sandwich shells with MWCNT/GFRP honeycomb are identified using the developed FE model coupled with genetic algorithm (GA) to enrich the natural frequencies and loss factors. Further, it can be observed that the reinforcement of MWCNTs in honeycomb core, geometry of shell structure, and optimal ply orientations significantly influences the natural frequencies and loss factors of the sandwich composite shell structures.

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Section: Convergence and Verification Studymentioning

confidence: 99%

Influence of multi‐walled carbon nanotubes reinforced honeycomb core on vibration and damping responses of carbon fiber composite sandwich shell structures

Maneengam

Siddique²,

Selvaraj³

et al. 2022

Polymer Composites

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“…According to Selvaraj et al, 32 multicore sandwich beams vibrational behavior was analyzed numerically and experimentally. Shankar et al 33 used multimagnetorheological elastomer (MRE) cores to examine the dynamic responses of composite sandwich cylindrical shells with carbon nanotubes (CNT) reinforcement. The results showed that the multi‐MRE core sandwich shells have higher natural frequencies than those of single‐MRE‐core sandwich shells, and that inclusion of CNT improves the natural frequencies.…”

Section: Introductionmentioning

confidence: 99%

Vibrational behavior of a 3D printed biomimetic dual‐core composite sandwich beam: An experimental and numerical study

Thanikasalam,

Ramamoorthy

2023

Polymer Composites

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Composite sandwich structures have been used in various applications like aerospace, automotive, and maritime sectors. The process of identifying the core design and the selection of a prominent core is crucially important in sandwich structures. In this study, biomimetic core development and vibration responses of composite sandwich beams with a dual biomimetic honeycomb core are investigated. The composite face layers are fabricated by the hand lay‐up method, and the fused deposition modeling is used to 3D print the PLA honeycomb cores. Based on ASTM‐E1876 and the alternative dynamic approach, the face layer elastic properties and rigidity modulus of the cores are evaluated, respectively. The numerical simulation is used to predict the sandwich panels' natural frequencies and mode shapes and verified with experimental results. There was an excellent agreement between the calculated and experimental natural frequencies. Due to the presence of the core and enhanced rigidity modulus, the dual lamellar honeycomb core sandwich beam produces the highest natural frequencies among all‐composite sandwich beams, followed by the dual regular honeycomb, single lamellar honeycomb, and single regular honeycomb cores. The geometric parametric studies, including core thickness, length‐to‐breadth ratio, lamination schemes, support conditions, and transverse vibration responses were also analyzed for different sandwich patterns. As a result of this work, thick composite sandwich panels in aeronautical and marine structures can be replaced with dual biomimetic core structures. The study highlights the fact that the dual‐core sandwich beam provided greater modal frequency than the single‐core beam with the same weight proportions.Highlights Pistachio nut shell‐based biomimetic honeycomb core has been developed. Alternative dynamic approach is used to find sandwich‐core shear properties. Lamellar‐infused biomimetic model yields higher shear modulus and stiffness. Dual‐core beam having high flexural stiffness enhances the natural frequency. Various parametric studies were analyzed for different sandwich patterns.

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“…Hybridization with two different types of reinforcement, whether natural or synthetic, is widely used in the polymer industry. This allows designers to create products with specialized mechanical properties, such as low moisture permeability and strong fiber-matrix bonding [11][12][13][14][15][16][17]. Hybridization has a beneficial effect on storage modulus, loss modulus, and Glass transition temperature in the Jute-Sisal hybrid fiber-reinforced epoxy biocomposite with varying fibre weight ratios [18].…”

Section: Introductionmentioning

confidence: 99%

Effect of glycerin on mechanical properties of a hybrid kenaf-jute polyester composite

Gouda²,

Manjunatha

et al. 2023

Eng. Res. Express

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Natural-based composites are gaining popularity among composite makers and end users because of their biocompatibility, low cost, and abundance. The influence of Glycerin as a plasticizer in various percentages ranging from 3% to 12% on Tensile, Flexural, Impact, Inter-laminar Shear Strength (ILSS), and Hardness characteristics of a Kenaf-Jute hybrid polyester composite, which is fabricated using hand layup followed by the hot press method, was investigated in the present study. It was observed that a 6% Glycerin concentration in polyester Kenaf-Jute composite outperformed other composites in Tensile, Flexural, and Impact strengths in the range of 2 to 73%. This is evident by analyzing SEM images that better physical bonding between the Kenaf-Jute fibers with modified polyester resin using Glycerin. As the Glycerin content in the composite increases, the Hardness decreases when compared to without modified polyester.

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Effect of carbon nanotubes reinforcement on eigenmodes of multi‐smart core sandwich composite cylindrical shell panels

Cited by 10 publications

References 31 publications

Influence of multi‐walled carbon nanotubes reinforced honeycomb core on vibration and damping responses of carbon fiber composite sandwich shell structures

Influence of multi‐walled carbon nanotubes reinforced honeycomb core on vibration and damping responses of carbon fiber composite sandwich shell structures

Vibrational behavior of a 3D printed biomimetic dual‐core composite sandwich beam: An experimental and numerical study

Effect of glycerin on mechanical properties of a hybrid kenaf-jute polyester composite

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