Dynamic characterization of CNT‐reinforced hybrid polymer composite beam under elevated temperature—an experimental study

Jakkamputi, Lakshmipathi; Rajamohan, Vasudevan

doi:10.1002/pc.24668

Cited by 15 publications

(3 citation statements)

References 27 publications

(26 reference statements)

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“…According to Azimpour-Shishevan et al [11], MWCNT performed better in reinforcing the GFRP beams compared to graphene Nano platelets (GNPs) during mechanical, modal and thermal tests. Moreover, by elevating the temperature, GFRP beams equipped with CNTs experienced lower reduction in natural frequencies compared to conventional GFRP beams [12].…”

Section: Introductionmentioning

confidence: 99%

CNT-woven glass fiber laminated composite for folded plate application: 2D-GDQ and experimental study

Heidari-Soureshjani,

Asadi,

Talebitooti

2024

Arch. Civ. Mech. Eng.

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This paper presents the advantages of carbon nanotubes (CNTs) in fortifying the glass fiber reinforced polymeric (GFRP) composites. Bolted steel straps are utilized at the edges of composite plate to create clamped conditions in the test setup. To reduce the uncertainties induced by bolt attachments, a genetic algorithm based model updating has been carried out by adopting artificial linear springs at the margins to create more balance between theory and reality. After checking the validity of plate's results, mechanical properties of randomly dispersed CNTs are incorporated in the formulations of folded plates. Remarkably, the motion equations are brought forward by the first order shear deformation theory (FSDT). Thereafter, two-directional generalized differential quadrature (2D-GDQ) technique has been used to extract natural frequencies from available motion, continuity and boundary equations. Results of the folded plate are validated first by an experimental modal testing and then some effective parameters such as folding angle, CNT weight ratio, boundary condition and flange-shape length are inspected.

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Section: Introductionmentioning

confidence: 99%

CNT-woven glass fiber laminated composite for folded plate application: 2D-GDQ and experimental study

Heidari-Soureshjani,

Asadi,

Talebitooti

2024

Arch. Civ. Mech. Eng.

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“…A post-buckling study of sandwich plates with FGM skins was performed by Kiani and Eslami [8] in a numerical sense, focusing on the effect of the power-law index, foundation parameters and imperfections of the overall response. In addition to the theoretical studies, many researchers have experimentally investigated the vibration and damping properties of nanoparticle-reinforced composite materials [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment

Khorasani¹,

Lampani²,

Dimitri³

et al. 2021

Molecules

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Due to the widespread use of sandwich structures in many industries and the importance of understanding their mechanical behavior, this paper studies the thermomechanical buckling behavior of sandwich beams with a functionally graded material (FGM) middle layer and two composite external layers. Both composite skins are made of Poly(methyl methacrylate) (PMMA) reinforced by carbon-nano-tubes (CNTs). The properties of the FGM core are predicted through an exponential-law and power-law theory (E&P), whereas an Eshelby–Mori–Tanaka (EMT) formulation is applied to capture the mechanical properties of the external layers. Moreover, different high-order displacement fields are combined with a virtual displacement approach to derive the governing equations of the problem, here solved analytically based on a Navier-type approximation. A parametric study is performed to check for the impact of different core materials and CNT concentrations inside the PMMA on the overall response of beams resting on a Pasternak substrate and subjected to a hygrothermal loading. This means that the sensitivity analysis accounts for different displacement fields, hygrothermal environments, and FGM theories, as a novel aspect of the present work. Our results could be replicated in a computational sense, and could be useful for design purposes in aerospace industries to increase the tolerance of target productions, such as aircraft bodies.

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“…Godara et al [34] explored the investigation on the influence of various types of MWCNT (MWCNT, thin-MWCNT, double-walled CNT, and modified-MWCNT) in laminated composite structure at 0.5 wt.%, and the effective results on the structural integrity were achieved with the modified-MWCNT. Jakkamputi and Rajamohan [35] presented the influence of MWCNT in the hybrid laminated composite structure through the structural response study, and the 15% enhancement in natural frequency was achieved at 0.5 wt.% of MWCNT reinforced in composite structure. The above literatures are provided the guidelines for further extension of the present experimental investigations of MWCNT reinforced laminated composite cylindrical shell panel.…”

Section: Introductionmentioning

confidence: 99%

Vibration analysis of the multi-walled carbon nanotube reinforced doubly curved laminated composite shallow shell panels: An experimental and numerical study

Subramani

Ramamoorthy

2020

Jnl of Sandwich Structures & Materials

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In this study, free and forced vibration analysis of the multi-walled carbon nanotube reinforced doubly curved laminated composite shallow shell panels has been performed. The governing differential equation of motion of the doubly curved laminated composite shallow shell panel is formulated using higher order shear deformation theory with the Lagrangian approach. In a finite element formulation , the mathematical model is derived with a nine-node quadrilateral element considering seven degrees of freedom at each node. The efficiency of the present finite element model (FEM) is demonstrated and compared by validating the results with the available literature, and it is also compared with the experimental measurements of the cylindrical laminated composite shell panel with and without multi-walled carbon nanotube reinforcement. Material properties of the laminated composite structure with and without multi-walled carbon nanotube reinforcements are evaluated through the impulse excitation vibration test in accordance with the ASTM E1876-15. The influence of multi-walled carbon nanotube on the stiffness and structural integrity of the curved laminated composite shallow shell panels is also studied in terms of natural frequencies. Parametric analysis

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Dynamic characterization of CNT‐reinforced hybrid polymer composite beam under elevated temperature—an experimental study

Cited by 15 publications

References 27 publications

CNT-woven glass fiber laminated composite for folded plate application: 2D-GDQ and experimental study

CNT-woven glass fiber laminated composite for folded plate application: 2D-GDQ and experimental study

Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment

Vibration analysis of the multi-walled carbon nanotube reinforced doubly curved laminated composite shallow shell panels: An experimental and numerical study

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