Design and evaluation of a kind of polymer-bonded explosives with improved mechanical sensitivity and thermal properties
Available online 19 April 2024
The emergence of TKX-50, an energetic ionic salt with a high enthalpy of formation and low sensitivity, has opened a new path for the development of high-energetic, insensitive composite explosives....
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Assessment of electrostatic discharge sensitivity of nitrogen-rich heterocyclic energetic compounds and their salts as high energy-density dangerous compounds: a study of structural variables
Available online 16 April 2024
Nitrogen-rich heterocyclic energetic compounds (NRHECs) and their salts have witnessed widespread synthesis in recent years. The substantial energy-density content within these compounds can lead to...
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Synthesis and characterization of a 1,3-dibutylimidazolium azide ([BBIm][N3]) : A promising green energetic ionic liquid
Available online 16 April 2024
In the pursuit of advancing imidazolium-based energetic ionic liquids (EILs), the current study is devoted to the synthesis and characterization of 1,3-dibutyl-imidazolium azide ([BBIm][N3]), as a novel...
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Ballistic performance of titanium-based layered composites made using blended elemental powder metallurgy and hot isostatic pressing
Available online 15 April 2024
Metal matrix composites tiles based on Ti-6Al-4V (Ti64) alloy, reinforced with 10, 20, and 40 (vol.%) of either TiC or TiB particles were made using press-and-sinter blended elemental powder metallurgy...
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Fluorinated semi-interpenetrating polymer networks for enhancing the mechanical performance and storage stability of polymer-bonded explosives by controlling curing and phase separation rates
Available online 10 April 2024
Herein, the effect of fluoropolymer binders on the properties of polymer-bonded explosives (PBXs) was comprehensively investigated. To this end, fluorinated semi-interpenetrating polymer networks (semi-IPNs)...
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Microfluidic preparation of surfactant-free ultrafine DAAF with tunable particle size for insensitive initiator explosives
Available online 10 April 2024
High purity and ultrafine DAAF (u-DAAF) is an emerging insensitive charge in initiators. Although there are many ways to obtain u-DAAF, developing a preparation method with stable operation, accurate...
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Analysis model for damage of reinforced bars in RC beams under contact explosion
Available online 6 April 2024
The load-bearing capacity of reinforced concrete (RC) beams primarily relies on internal reinforced bars. However, limited research has been conducted on the dynamic response of these bars. To address...
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Vulnerability assessment of UAV engine to laser based on improved shotline method
March 2024
Laser anti-drone technology is entering the sequence of actual combat, and it is necessary to consider the vulnerability of typical functional parts of UAVs. Since the concept of "vulnerability" was...
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A review on surface coating strategies for anti-hygroscopic of high energy oxidizer ammonium dinitramide
March 2024
Ammonium dinitramide (ADN), which has the advantages of high energy density, no halogen and low characteristic signal, is not only considered as a new high-energy oxidizer that is expected to replace...
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Micro-aluminum powder with bi- or tri-component alloy coating as a promising catalyst: Boosting pyrolysis and combustion of ammonium perchlorate
March 2024
A novel design of micro-aluminum (μAl) powder coated with bi-/tri-component alloy layer, such as: Ni–P and Ni–P–Cu (namely, Al@Ni–P, Al@Ni–P–Cu, respectively), as combustion catalysts, were introduced...
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Uncertainty quantification of mechanism motion based on coupled mechanism—motor dynamic model for ammunition delivery system
March 2024
In this paper, a dynamic modeling method of motor driven electromechanical system is presented, and the uncertainty quantification of mechanism motion is investigated based on this method. The main...
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Explosion resistance performance of reinforced concrete box girder coated with polyurea: Model test and numerical simulation
March 2024
To study the anti-explosion protection effect of polyurea coating on reinforced concrete box girder, two segmental girder specimens were made at a scale of 1:3, numbered as G (without polyurea coating)...
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MTTSNet: Military time-sensitive targets stealth network via real-time mask generation
March 2024
The automatic stealth task of military time-sensitive targets plays a crucial role in maintaining national military security and mastering battlefield dynamics in military applications. We propose a...
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An improved initial rotor position estimation method using high-frequency pulsating voltage injection for PMSM
March 2024
High frequency pulsating voltage injection method is a good candidate for detecting the initial rotor position of permanent magnet synchronous motor. However, traditional methods require a large number...
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Evolution of molecular structure of TATB under shock loading from transient Raman spectroscopic technique
March 2024
By combination of the transient Raman spectroscopic measurement and the density functional theoretical calculations, the structural evolution and stability of TATB under shock compression was investigated....
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Data-driven modeling on anisotropic mechanical behavior of brain tissue with internal pressure
March 2024
Brain tissue is one of the softest parts of the human body, composed of white matter and grey matter. The mechanical behavior of the brain tissue plays an essential role in regulating brain morphology...
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Automatic modulation recognition of radiation source signals based on two-dimensional data matrix and improved residual neural network
March 2024
Automatic modulation recognition (AMR) of radiation source signals is a research focus in the field of cognitive radio. However, the AMR of radiation source signals at low SNRs still faces a great challenge....
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Research on the influences of motion characteristics of jetting projectile charge under water
March 2024
Shaped charge warhead is important for enhancing the damage performance of underwater weapons. This paper used finite element analysis software and based on JPC water penetration experiments to examine...
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Jet formation and penetration performance of a double-layer charge liner with chemically-deposited tungsten as the inner liner
March 2024
This paper proposes a type of double-layer charge liner fabricated using chemical vapor deposition (CVD) that has tungsten as its inner liner. The feasibility of this design was evaluated through penetration...
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Hybrid pedestrian positioning system using wearable inertial sensors and ultrasonic ranging
March 2024
Pedestrian positioning system (PPS) using wearable inertial sensors has wide applications towards various emerging fields such as smart healthcare, emergency rescue, soldier positioning, etc. The performance...
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Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism
March 2024
To simplify the composite propellant formulation and address the current issue of the single-functionality present in existing additives, the multi-cyano, amine-based polybutadiene (AEHTPB-CN) was prepared...
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Numerical and experimental investigation into the evolution of the shock wave when a muzzle jet impacts a constrained moving body
March 2024
The gun-track launch system is a new special launch device that connects the track outside the muzzle. Because it is constrained by the track, the characteristics of development of the muzzle jet differ...
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Construction of smart propellant with multi-morphologies
March 2024
Smart materials, which exhibit shape memory behavior in response to external stimuli, have shown great potential for use in biomedical applications. In this study, an energetic composite was fabricated...
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Identifying the enhancement mechanism of Al/MoO3 reactive multilayered films on the ignition ability of semiconductor bridge using a one-dimensional gas-solid two-phase flow model
March 2024
Energetic Semiconductor bridge (ESCB) based on reactive multilayered films (RMFs) has a promising application in the miniature and intelligence of initiator and pyrotechnics device. Understanding the...
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A guidance and control design with reduced information for a dual-spin stabilized projectile
March 2024
In this paper, an integrated guidance and control method based on an adaptive path-following controller is proposed to control a spin-stabilized projectile with only translational motion information...
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