A brief review on various high energy absorbing materials

Haq, Ahsan Ul; Reddy, N.S.

doi:10.1016/j.matpr.2020.09.648

Cited by 14 publications

(6 citation statements)

References 50 publications

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“…2 With their cellular geometry and lightweight composition, honeycomb structures offer an impressive strength-to-weight ratio, demonstrating substantial resistance to high-velocity impacts and intense pressure. 3,4 Honeycomb sandwich panels, renowned for superior shock mitigation and energy absorption, have been extensively researched. [1][2][3][4][5] Recent advancements in numerical and experimental impact loading techniques have prompted interest in their dynamic behavior.…”

Section: Introductionmentioning

confidence: 99%

“…3,4 Honeycomb sandwich panels, renowned for superior shock mitigation and energy absorption, have been extensively researched. [1][2][3][4][5] Recent advancements in numerical and experimental impact loading techniques have prompted interest in their dynamic behavior. Studies have primarily delved into the compressive behavior and lowvelocity impact response, [6][7][8][9] emphasizing geometric parameters like core height, cell wall thickness, and striking sheet thickness.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High-velocity impact performance of sandwich panels with additively manufactured hierarchical honeycomb cores: An experimental and numerical study

Ul Haq,

Narala

2024

Jnl of Sandwich Structures & Materials

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The honeycomb sandwich panel presents a highly promising solution for enhancing ballistic behavior owing to its excellent strength-to-weight ratio and impact resistance. This study focuses on investigating the shock mitigation properties of honeycomb sandwich panels through experimentation and numerical simulation of high-velocity impact tests. Single-scale and double-scale hierarchical honeycomb cores are manufactured using selective laser melting with AlSi10Mg powder, combined with a pair of stainless steel (SS 316) sheets. High-velocity impact experiments were conducted within a velocity ranging from 100 to 270 m/s to examine the effects of different cores and projectile nose shapes on the dynamic response of the panels. Numerical simulations using ABAQUS/Explicit software were performed and validated against the experimental results. The sandwich panel with a double-scale hierarchical honeycomb core exhibited 7.8% and 6.1% more energy absorption compared to the single-scale hierarchical honeycomb core against conical and hemispherical nose projectiles, respectively. Additionally, the ballistic limit for the hemispherical projectile was found to be 8.9% higher than the conical-nose projectile under the same impact velocity and panel thickness. Moreover, an increase in panel thickness from 12 mm to 25 mm prompted a significant improvement of approximately 39% in specific energy absorption and a 44% increase in ballistic limit velocity. These findings highlight the considerable potential of single-scale and double-scale hierarchical honeycomb sandwich panels for the development of threat-resistant structures in critical dynamic loading applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High-velocity impact performance of sandwich panels with additively manufactured hierarchical honeycomb cores: An experimental and numerical study

Ul Haq,

Narala

2024

Jnl of Sandwich Structures & Materials

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“…Energy-absorbing materials widely used in military, automotive, aerospace, and civil-engineering fields require high specific strength, fracture toughness, and high impact resistance 10 , 11 . Evaluating their safety under impact loading environments like artillery firing, automotive collisions, and blast impacts is crucial.…”

Section: Introductionmentioning

confidence: 99%

Energy-absorption analyses of honeycomb-structured Al-alloy and nylon sheets using modified split Hopkinson pressure bar

Kim,

Kim

et al. 2023

Sci Rep

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Thin cylindrical honeycomb-structured aluminum alloy and mono-cast (MC) nylon were studied as superior energy-absorbing materials compared to metallic foams. Their energy-absorbing performance was assessed using a modified split Hopkinson pressure bar (SHPB). Key parameters included maximum impact acceleration (amax) and its reduction ratio (compared to the none-specimen case). The lowest amax reduction ratio was observed in bulk Al sheets without honeycomb cavities. As the cavity fraction increased up to 79% in honeycomb-structured Al specimens, the amax reduction ratio improved due to broadened stress–time curves with a shallow-plateau shape. This made high-cavity-fraction Al specimens preferable for higher-energy absorption and lighter-weight buffering materials. In nylon specimens, the amax reduction ratio increased until the fraction reached 52% due the softer and more deformable nature of the polymeric nylon. Thicker or rotated Al specimens also showed higher amax reduction ratios due to sufficient and continuous energy absorption. The modified SHPB demonstrated effective energy-buffering concepts and provided insightful amax interpretations, overcoming complexities in energy absorption analyses.

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“…Carbon nanotubes-based composites materials have been widely accepted as microwave absorbers due to their inherent features such as low density and good conductivity. Therefore, they have received the extensive attention of researchers from various fields in recent years [1][2][3][4]. As is well known, carbon nanotubes are one of the important materials in the field of electromagnetic absorption [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Design of Necklace-Like Fe3O4/Multiwall Carbon Nanotube (MWCNT) Composites with Enhanced Microwave Absorption Performance

et al. 2021

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In order to manufacture microwave absorbers with strong attenuation abilities and that are light weight, in this paper, ferromagnetic carbon matrix composites were prepared by the composite of carbon nanotubes with adjustable dielectric constant and Fe3O4. Fe3O4/MWCNT composites with well-designed necklace-like structure and controllable size in the range of 100–400 nm have been successfully achieved by a simple solvent thermal method. A series of samples were prepared by changing experimental parameters. The microwave absorption characteristics of these samples were studied from the dielectric constant and magnetic permeability in two aspects. The electromagnetic absorption properties of the composites show obvious differences with different microsphere sizes, different microsphere density and different proportion of additives. When the solvothermal time is 15 h and the microsphere size is 400 nm, the reflection loss reaches −38 dB. The interfacial polarization caused by the unique structural design and good impedance matching produce composites that possess excellent electromagnetic loss ability.

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A brief review on various high energy absorbing materials

Cited by 14 publications

References 50 publications

High-velocity impact performance of sandwich panels with additively manufactured hierarchical honeycomb cores: An experimental and numerical study

High-velocity impact performance of sandwich panels with additively manufactured hierarchical honeycomb cores: An experimental and numerical study

Energy-absorption analyses of honeycomb-structured Al-alloy and nylon sheets using modified split Hopkinson pressure bar

Microstructural Design of Necklace-Like Fe3O4/Multiwall Carbon Nanotube (MWCNT) Composites with Enhanced Microwave Absorption Performance

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