Survivability of embedded microelectronics in precision guided projectiles: Modeling and characterization

Verberne, P.; Meguid, S. A.; Elsayed, Elsayed A.

doi:10.1016/j.ijimpeng.2021.103864

Cited by 8 publications

(3 citation statements)

References 32 publications

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“…Deformation of the cushioning material might create a gap between the inner metal structure and the cushioning material, potentially amplifying vibration output to the inner protective structure during high-frequency overload impacts [2]. Tis scenario is unfavorable for improving the system's protective performance, especially when projectiles induce violent oscillations in the complex fuid environment upon leaving the muzzle [4][5][6][7]. Enhancing the stifness of the vibration isolator, particularly when the input frequency is lower than the system's intrinsic frequency, could reduce overload transfer to inner circuit components [1].…”

Section: Introductionmentioning

confidence: 99%

Researching the Influence of Preload on Vibration Characteristics in the Ballistic Recorder Vibration Damping System

Jiang,

Lu,

Zhao

2024

Shock and Vibration

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In this study, the vibration characteristics of a bullet-loaded recorder’s vibration damping system under various preload conditions are investigated through theoretical analysis, numerical simulations, and experimental verification. The findings indicate that the inclusion of a polyurethane elastomer vibration damping buffer layer between the cartridge and the recorder, along with the application of a specific preload, significantly reduces the amplitude of vibration acceleration transmitted to the recorder’s interior. This, in turn, enhances the overload resistance of the cartridge’s internal circuit. Numerical simulation results and theoretical analysis suggest that increasing the preload on the buffer material between the elastomer and the recorder reduces both the frequency ratio and damping ratio of the damping system. This reduction further decreases the amplitude of vibration transmitted to the recorder. However, excessively high preload generates substantial compressive stress within the recorder under static conditions, intensifying during the projectile’s accelerated movement. As a consequence, deformation and damage occur to the internal circuitry. Therefore, ensuring that the recorder possesses the structural strength necessary to withstand increased preload is crucial. This balancing act improves the recorder’s resistance to shock, vibration, and overload, while also preventing excessive stress-induced damage.

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Section: Introductionmentioning

confidence: 99%

Researching the Influence of Preload on Vibration Characteristics in the Ballistic Recorder Vibration Damping System

Jiang,

Lu,

Zhao

2024

Shock and Vibration

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“…[ 28–30 ] These postprinting treatments either cause considerable shrinkage of the printed structures, limiting their coupling with different parts inside the microsystem, or result in the irreversible damage or contamination to other essential components. This issue impedes the incorporation of mechanical nanolattices into current microelectromechanical systems (short as MEMS hereafter), microchips, and other cutting‐edge microsystems, [ 31 ] and restrict their utility in applications like reusable impact‐protectors. [ 32 ]…”

Section: Introductionmentioning

confidence: 99%

“…Next-generation structural materials are expected to embody an array of characteristics, such as lightweight attributes, remarkable strength and toughness, superior resilience and damage tolerance, as well as the ability to adapt under extreme mechanical environments. [1,2] Achieving such idealized properties in synthetic materials remains challenging, as this requires the microelectromechanical systems (short as MEMS hereafter), microchips, and other cutting-edge microsystems, [31] and restrict their utility in applications like reusable impact-protectors. [32] Recently, we reported the first use of gold and silver nanoclusters as two-photon initiators for 3D printing of robust nanocomposite nanolattices.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performance of Copper‐Nanocluster‐Polymer Nanolattices

Tang,

Liang,

Ren

et al. 2024

Advanced Materials

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We report a type of copper‐nanocluster‐polymer composites and showcase that their 3D nanolattices exhibit a superior combination of high strength, toughness, deformability, resilience and damage‐tolerance. Notably, the strength and toughness of ultralight copper‐nanocluster‐polymer nanolattices in some cases surpass current best performers, including alumina, nickel, and other ceramic or metallic lattices at low densities. Additionally, copper‐nanocluster‐polymer nanolattices are super‐resilient, crack‐resistant, and one‐step printed under ambient condition which can be easily integrated into sophisticated microsystems as highly effective internal protectors. Our findings suggest that, unlike traditional nanocomposites, the laser‐induced interface and the high fraction of ultrasmall Cu15 nanoclusters as crosslinking junctions contribute to the marked nonlinear elasticity of copper‐nanocluster‐polymer network, which synergizes with the lattice‐topology effect and culminates in the exceptional mechanical performance.This article is protected by copyright. All rights reserved

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