Uniaxial and biaxial bioinspired interlocking composite panels subjected to dynamic loadings

Nguyen‐Van, Vuong; Wickramasinghe, Sachini; Ghazlan, Abdallah; Nguyen‐Xuan, H.; Tran, Phuong

doi:10.1016/j.tws.2020.107023

Cited by 15 publications

(3 citation statements)

References 49 publications

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“…To accommodate various substrates or structures, the ratio of hard and soft segments in polyurea can be adjusted by modifying the type and content of isocyanate and amino compounds [21][22][23][24][25][26]. Moreover, the incorporation of nano or micron particles and reinforcing fibers serves to enhance the mechanical properties and blast resistance of polyurea composites [11][12][13][14][15][16][17][18][27][28][29]. Additionally, molecular dynamics (MD) simulation can be utilized to optimize polyurea at the molecular level, further enhancing its performance.…”

Section: Structural Characteristics Of Polyurea Molecules and Materia...mentioning

confidence: 99%

“…This requirement is particularly crucial for military protective equipment such as military ships, armoured vehicles and protective helmets, all of which need to withstand shock waves and high-speed fragments resulting from near-field explosions [1][2][3][4][5][6][7][8][9][10]. Even though research on the protective properties of metal structures and high-performance fiber composites has made significant progress, there is an increasing need for lightweight and efficient blast protection structures [11][12][13][14][15][16][17][18]. To accommodate this requirement, the application of high-performance polymers in composite protection structures has gained momentum due to their enhanced protection performance, cost reduction and expanded application possibilities.…”

Section: Introductionmentioning

confidence: 99%

“…This resulted in the construction of a "rigid-flexible" interlocking three-dimensional interfacial structure, further increasing the interfacial shear strength and toughness of aramid fiber composites. N.V. Vuong et al [18] developed different types of composites consisting of corrugated glass fibers/vinyl ester and polyurea using a conceptual composite panel inspired by mollusk shell pearl laminates. Various interlocking corrugated laminates were simulated and compared with planar and conventional dog-bone interlocking laminates, demonstrating a significant improvement in the performance of this composite under blast and impact loading.…”

Section: Introduction Of Enhanced Materialsmentioning

confidence: 99%

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Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

Wang,

Ding,

Lin

et al. 2024

Polymers

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Polyurea has gained significant attention in recent years as a functional polymer material, specifically regarding blast and impact protection. The molecular structure of polyurea is characterized by the rapid reaction between isocyanate and the terminal amine component, and forms an elastomeric copolymer that enhances substrate protection against blast impact and fragmentation penetration. At the nanoscale, a phase-separated microstructure emerges, with dispersed hard segment microregions within a continuous matrix of soft segments. This unique microstructure contributes to the remarkable mechanical properties of polyurea. To maximize these properties, it is crucial to analyze the molecular structure and explore methods like formulation optimization and the incorporation of reinforcing materials or fibers. Current research efforts in polyurea applications for protective purposes primarily concentrate on construction, infrastructure, military, transportation and industrial products and facilities. Future research directions should encompass deliberate formulation design and modification, systematic exploration of factors influencing protective performance across various applications and the integration of numerical simulations and experiments to reveal the protective mechanisms of polyurea. This paper provides an extensive literature review that specifically examines the utilization of polyurea for blast and impact protection. It encompasses discussions on material optimization, protective mechanisms and its applications in blast and impact protection.

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Section: Structural Characteristics Of Polyurea Molecules and Materia...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introduction Of Enhanced Materialsmentioning

confidence: 99%

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Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

Wang,

Ding,

Lin

et al. 2024

Polymers

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Performance of meta concrete panels subjected to explosive load: Numerical investigations

Nguyen‐Van

Peng

Hazell

et al. 2023

Structural Concrete

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Research on strengthening and retrofitting of concrete structures against explosive loading has recently received much attention. This paper proposes a new type of reinforcement for concrete panels to enhance their blast‐resistant capacity. The reinforcement structure is naturally optimized with continuous nonself‐intersecting surfaces, known as triply periodic minimal surface (TPMS)‐primitive scaffold. A numerical model is developed to investigate the performance of TPMS‐primitive reinforced concrete panels against blast loading. The results are validated by experimental data from the literature on a traditional reinforced concrete slab. The concrete slabs reinforced with one, two, and four layers of TPMS‐primitive unit cells are designed and examined, while a quarter of the panel is simulated to reduce the computational cost. A constitutive model that considers the strain‐rate effect is employed to capture the rate‐dependent impulsive behavior of the proposed panels. The numerical results indicate significant enhancements in damage resistance and substantial reductions in deflection of the concrete reinforced panels when the TPMS‐primitive scaffold replaces the rebar lattice. The proposed reinforcement with multiple layers of unit cells retains high efficiency through parametric studies, while changes in the shell thickness of the reinforcement scaffold have limited effects on filtering blast waves.

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Performance evaluations of functionally graded porous structures

Nguyen-Van,

Peng,

Liu

et al. 2024

Machine Learning Aided Analysis, Design, and Additive Manufacturing of Functionally Graded Porous Composite Structures

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Uniaxial and biaxial bioinspired interlocking composite panels subjected to dynamic loadings

Cited by 15 publications

References 49 publications

Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

Performance of meta concrete panels subjected to explosive load: Numerical investigations

Performance evaluations of functionally graded porous structures

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