Assessment on Energy Absorption of Foam Core Sandwich Panels Under Low Velocity Impact

Mocian, Oana; Constantinescu, Dan Mihai; Indreș, Andrei Ioan

doi:10.1002/masy.202000300

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Different methods have challenged tensile strength, [7] compressive strength, and energy absorption, [8] to classify these materials as candidates for applications such as a core for sandwich panels. [9,10] These researches were followed by experiments such as Feshat et al [5] which used polyurethane foam as a precursor and electrodeposition method as the production method. They targeted lithium battery applications of these foams and investigated the mechanical behavior of nickel foams through simulation.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, Levy et al [4] produced an open-cell nickel foam and examined the effect of carbon coatings on the properties of these foams, which are widely used in supercapacitors. Sandwich panels found their place in aerospace, marine, and civil industries due to their high specific strength, energy absorption characteristics, [9] sound absorption, impact resistance, and electromagnetic design during recent decades. Sandwich panels comprise top and bottom face sheets with diverse cores such as honeycomb, open-and close-cell metal foams, corrugated plates, trusses, and Y-frame.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Energy Absorption Behavior of Light Sandwich Panel with Nickel/Polymer Open‐Cell Foam Core during Compression

et al. 2022

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This investigation aims to assess the mechanical behavior and energy absorption properties of the light sandwich panels made of open‐cell polymer and nickel/polymer foam. A portion of the ultralightweight foam sandwich panels (14.23 g) is produced by 3D printing and electrodeposition methods with 35, 45, and 55 seeds numbers, which lead to 4, 5, and 6 pores per inch (PPI); then a uniaxial compression test is applied to measure maximum compressive strength, strength‐to‐weight ratio, energy absorption density, efficiency, and complementary energy. The results indicate that compared with typical open‐cell nickel foams and polymer precursors when the thickness of the nickel layer is about 50 micrometers, the aforementioned properties of the sandwich panel shows a significant improvement. Improvement of properties changes by increasing PPI and CAD seed numbers. In a nickel/polymer sandwich panel with 6 PPI, the first maximum compressive strength, specific energy absorption, and energy absorption efficiency reach 0.93 (MPa), 0.93 (J.boldg−1), and 60%, respectively. 3D‐RP‐Ni‐6 improves 3D‐RP‐6 first maximum compressive strength and specific energy absorption by six times and two times, respectively. These significant improvements in the properties of these sandwich panels make these advanced materials a suitable candidate for the high strength applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of Energy Absorption Behavior of Light Sandwich Panel with Nickel/Polymer Open‐Cell Foam Core during Compression

et al. 2022

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Effect of graphene nanoparticles on the strength of sandwich structure inspired by dragonfly wings under low‐velocity impact

et al. 2021

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Dragonfly's wings are highly specialized flying organs that are well adapted to the flying behavior of each dragonfly, mainly consisting of veins and membrane. The effect of graphene nanoparticles on a novel foam-based sandwich panel structure inspired by microstructural features of dragonfly wings has been investigated under low-velocity impact. Composite and nanocomposite sandwich veins are made of E-glass/epoxy layers, in which different percentages of graphene nanoparticles are combined with its resin. Polyurethane foam was also used for its core. According to the performance of the samples made after testing and cutting the samples in transverse and longitudinal directions, the internal structure of the vein was examined. Sandwich panels with this type of structure under impact can prevent damage propagation in the vein.The sandwich structure with 0.3% nano indicated more stable behavior in energy absorption and impact resistance than other samples.

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The effect of the viscoelastic support and GRPL-reinforced foam material on the thermomechanical vibration response of piezomagnetic sandwich nanosensor plates

Eroğlu,

Esen,

Koç

2024

Acta Mech

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This paper investigates the vibration characteristics of a sandwich nanosensor plate composed of piezoelectric materials, specifically barium and cobalt, in the upper and lower layers, and a core material consisting of either ceramic (silicon nitride) or metal (stainless steel) foams reinforced with graphene (GPRL). The study utilized the novel sinosoidal higher-order deformation theory and nonlocal strain gradient elasticity theory. The equations of motion for nanosensor sandwich graphene were derived using Hamilton's principle, considering the thermal, electroelastic, and magnetostrictive characteristics of the piezomagnetic surface plates. These equations were then solved using the Navier method. The core element of the sandwich nanosensor plate can be represented using three distinct foam variants: a uniform foam model, as well as two symmetric foam models. The investigation focused on analyzing the dimensionless fundamental natural frequencies of the sandwich nanosensor plate. This analysis considered the influence of three distinct foam types, the volumetric graphene ratio, temperature variation, nonlocal parameters, porosity ratio, electric and magnetic potential, as well as spring and shear viscoelastic support. Furthermore, an analysis was conducted on the impact of the metal and ceramic composition of the central section of the sandwich nanosensor plate on its dimensionless fundamental natural frequencies. In this context, the use of ceramic as the central material results in a mean enhancement of 33% in the fundamental natural frequencies. In contrast, the incorporation of graphene into the core material results in an average enhancement of 27%. The thermomechanical vibration behavior of the nanosensor plate reveals that the presence of graphene-supported foam and a viscoelastic support structure in the core layer leads to an increase in thermal resistance. This increase is dependent on factors such as the ratio of graphene, porosity ratio of the foam, and parameters of the viscoelastic support. Metal foam or ceramic foam has been found to enhance thermal resistance when compared to solid metal or ceramic core materials. The analysis results showed that it is important to take into account the temperature-dependent thermal properties of barium and cobalt, which are piezo-electromagnetic materials, and the core layer materials ceramics and metal, as well as the graphene used to strengthen the core. The research is anticipated to generate valuable findings regarding the advancement and utilization of nanosensors, transducers, and nano-electromechanical systems engineered for operation in high-temperature environments.

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Assessment on Energy Absorption of Foam Core Sandwich Panels Under Low Velocity Impact

Cited by 3 publications

References 14 publications

Investigation of Energy Absorption Behavior of Light Sandwich Panel with Nickel/Polymer Open‐Cell Foam Core during Compression

Investigation of Energy Absorption Behavior of Light Sandwich Panel with Nickel/Polymer Open‐Cell Foam Core during Compression

Effect of graphene nanoparticles on the strength of sandwich structure inspired by dragonfly wings under low‐velocity impact

The effect of the viscoelastic support and GRPL-reinforced foam material on the thermomechanical vibration response of piezomagnetic sandwich nanosensor plates

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