Investigation of mechanical performance of 3D woven spacer sandwich composites with different cell geometries

Neje, Ghanshyam; Behera, B.K.

doi:10.1016/j.compositesb.2018.10.036

Cited by 62 publications

(40 citation statements)

References 28 publications

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“…2,3 3D spacer woven fabrics are composite reinforced materials whose bottom and top faces are braided to each other with plies aligned in through-thickness direction. 4 This structure allows forming of channels between the top and bottom plies and creates a lightweight structural material. The weave in the channel direction is called warp and the weave perpendicular to this direction is called weft.…”

Section: Introductionmentioning

confidence: 99%

Improved mechanical performance of three-dimensional woven glass/epoxy spacer composites with carbon nanotubes

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2021

Journal of Reinforced Plastics and Composites

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Three-dimensional polymer composites offer various features and design options due to their hollow structure and lightweight. However, to exploit their advantages, it is a must to improve their structural features and mechanical performances including out-plane direction. Although introducing thermoplastic fillers between the plies or multilayered design addresses on this critical issue, the benefits offered by the nanoparticles with superior mechanical properties come a step forward as an another engineering solution. Based on this motivation, the goal of this study is to investigate the impact of multiwalled carbon nanotubes on the mechanical and thermomechanical performances of three-dimensional woven glass/epoxy spacer composites. Therefore, multiwalled carbon nanotubes at various content were introduced into epoxy matrix, and the multiwalled carbon nanotubes–epoxy mixture was infused to three-dimensional woven fabric with the vacuum-assisted resin transfer method. The obtained results indicated that the three-point bending strength and modulus were enhanced up to 25 and 80% for warp direction and enhanced up to 44 and 85% for weft direction with carbon nanotube addition, respectively. Tensile strength developed in the warp direction by 7%, while the strength value in the weft direction did not change. The tensile strain values for warp and weft directions enhanced up to 19 and 12% with carbon nanotube addition, respectively. In addition, thermomechanical analysis has revealed that the glass transition temperature and storage modulus were also improved. Particle dispersion detection with color measurement and scanning electron microscopy analyses revealed the effectiveness of the ultrasonic mixing on the dispersion of carbon nanotubes in the epoxy matrix. The consequences of carbon nanotube addition on microscale morphology were discussed based on the fracture morphologies to nanoscale and microscale toughening mechanisms in the existence of carbon nanotube reinforcement.

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Section: Introductionmentioning

confidence: 99%

Improved mechanical performance of three-dimensional woven glass/epoxy spacer composites with carbon nanotubes

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Aydın

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2021

Journal of Reinforced Plastics and Composites

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“…Although there are many advantages of the sandwich structure, the bonding between the face sheet and core materials is one of the major weak spots. Integrated woven core piles provide better skin core deboning resistance than sandwich structures of other core materials, such as skin core deboning resistance than sandwich structures of other core materials, such as honeycomb, foams, balsa wood, and others [11]. Neje and Behera reported that the core pile structure as well as different cell heights, widths, and opening angles significantly affected the failure loads and energy absorbing capacity of 3D integrally woven spacer sandwich composites [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Structural Differences on the Mechanical Properties of 3D Integrated Woven Spacer Sandwich Composites

2021

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Three-dimensional integrated woven spacer sandwich composites have been widely used as industrial textiles for many applications due to their superior physical and mechanical properties. In this research, 3D integrated woven spacer sandwich composites of five different specifications were produced, and the mechanical properties and performance were investigated under different load conditions. XR-CT (X-ray computed tomography) images were employed to visualize the microstructural details and analyze the fracture morphologies of fractured specimens under different load conditions. In addition, the effects of warp and weft direction, face sheet thickness, and core pile height on the mechanical properties and performance of the composite materials were analyzed. This investigation can provide significant guidance to help determine the structure of composite materials and design new products according to the required mechanical properties.

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“…[32] Jin et al have evaluated the mechanical performance and failure mechanisms sandwich with integrally woven wave-shaped core. [33] Spacer sandwich structures with woven cross-links and forming cells of different cross-sectional shapes have been analyzed for their compressive and bending properties by Neje et al [34,35] However, woven spacer structures with woven cross-links and manufactured in double-level configuration have not been studied yet for their mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of mechanical behavior of 3D woven spacer sandwich composites with single and double level structures

Neje

Behera

2020

Polymer Composites

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3D woven spacer fabrics connected with woven cross-links and forming tunnels of trapezoidal shape were produced in single and double level configuration with four different cell wall opening angles in each configuration. The sandwich composites produced from these spacer fabrics were then analyzed for their out-of-plane compressive and flexural properties to study their failure loads, energy absorbency, and failure modes. With an increase in the cell wall opening angles, compressive load and specific compressive load increased for single and double level structures, but the same properties were found to be poor for double level structures compared to their single level counterparts. Absorbed energy/volume was also found to be lower for double level composites. The bending load and specific bending load values increased with increase in cell wall opening angle, with double level structures performing better at each cell wall opening compared to their single level counterparts. But the flexural stress of double level structures was lower than that of their corresponding single level structures. The outcomes of this study can be used in designing and manufacturing of multilevel spacer structures with different cell geometrical parameters for specific end use requirements.

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Investigation of mechanical performance of 3D woven spacer sandwich composites with different cell geometries

Cited by 62 publications

References 28 publications

Improved mechanical performance of three-dimensional woven glass/epoxy spacer composites with carbon nanotubes

Improved mechanical performance of three-dimensional woven glass/epoxy spacer composites with carbon nanotubes

Effect of Structural Differences on the Mechanical Properties of 3D Integrated Woven Spacer Sandwich Composites

Comparative analysis of mechanical behavior of 3D woven spacer sandwich composites with single and double level structures

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