Results 11 to 20 of about 13,656,626 (360)
Hydrogen storage by earth-abundant metals, synthesis and characterization of Al3FeH3.9
Materials & Design, 2021 Among the various functionalities of hydrides, their use in hydrogen storage has been the most intensively studied because hydrides can store hydrogen compactly and safely. Thus, hydrides are key materials for the hydrogen economy.
Hiroyuki Saitoh +11 more
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Structured beams invariant to coherent diffusion [PDF]
Optics Express, 2020 Bessel beams are renowned members of a wide family of non-diffracting (propagation-invariant) fields. We report on experiments showing that non-diffracting fields are also immune to diffusion. We map the phase and magnitude of structured laser fields onto the spatial coherence between two internal states of warm atoms undergoing diffusion.
Slava Smartsev +4 more
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Buckling of Planar Micro-Structured Beams [PDF]
Applied Sciences, 2020 In this paper, a Timoshenko beam model is formulated for buckling analysis of periodic micro-structured beams, uniformly compressed. These are planar grid beams, whose micro-structure consists of a square lattice of equal fibers, modeled as Timoshenko micro-beams.
Ferretti M., D'Annibale F.
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Sensors, 2018 This paper presents a novel structural damage detection indicator, i.e., fourth-order voltage statistical moment (FVSM) based on the electromechanical impedance (EMI) principle, and then proposes a two-step damage detection method based on the novel ...
Pin Zhou, Dansheng Wang, Hongping Zhu
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Structural Damping with Friction Beams [PDF]
Shock and Vibration, 2007 In the last several years, there has been increasing interest in the use of friction joints for enhancing damping in structures. The joints themselves are responsible for the major part of the energy dissipation in assembled structures. The dissipated work in a joint depends on both the applied normal force and the excitation force.
L. Gaul, Jens Becker, J. Roseira
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Nihon Kikai Gakkai ronbunshu, 2018 In a conceptual design phase of noise and vibration performance, CAE (Computer Aided Engineering) is frequently introduced to design appropriate properties of individual members.
Sunao TOMITA +3 more
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Structural Assesment of Corroded Beams
ECS Transactions, 2006 This paper shows how the corrosion and mechanical actions can be taken into account in a simple model for the assessment of structural elements. This work is framed in the Project Benchmark des Poutres de La Rance in which several partners have participated.
Alejandro Muñoz Noval +2 more
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Spill structure in intense beams [PDF]
Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440), 2004 Fixed target studies of small branching ratio decay processes require intense beams and smooth spills. Longitudinal structure arises through collective effects, well below the coasting beam stability threshold. These structures have been observed at the Brookhaven AGS and dependence on intensity and momentum spread measured.
GLENN,J. W. +4 more
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Shock and Vibration, 2021 In the process of coal caving, the basis of identifying coal and rock by the vibration signal is the difference of the tail beam response when coal-rock impacts the tail beam, and the tail beam in the hydraulic support is a complex box structure with ...
Li-rong Wan, Zhe Li, Yang Yang, Ran Li
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A nonlinear beam model of photomotile structures [PDF]
Proceedings of the National Academy of Sciences, 2020 Significance Actuation and propulsion are significant challenges in soft robotics. Supply of power typically requires a cumbersome tether or heavy onboard power source. Further, one typically needs to reset the system. Using theory and numerical simulations, we show, in this work, that this challenge can be overcome by the use of ...
Kevin Korner +4 more
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