Results 1 to 10 of about 4,274,589 (298)
Biaxial Tensile Mechanical Properties of HTPB Solid Propellant
International Journal of Aerospace Engineering, 2023 The purpose of this work is to study the effects of different loading rate ratios and loading speeds on the biaxial tension of hydroxyl-terminated polybutadiene (HTPB) solid propellant. A proper kind of biaxial tensile specimen with which the stresses in
Li Jin +3 more
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Reduced order numerical modeling for calibration of complex constitutive models in powder pressing simulations [PDF]
Science of Sintering, 2017 Numerical simulations of different ceramic production phases often involve complex constitutive models, with difficult calibration process, relying on a large number of experiments.
Pandey Shwetank +2 more
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Strain Prediction of Grain in Solid Rocket Motor under the Pressure Curing Molding Technology
International Journal of Aerospace Engineering, 2023 The residual strain generated in grains during the propellant manufacturing process can significantly impact the safety and stability of solid rocket motors.
Kaining Zhang +3 more
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Ultrathin acoustic metamaterial as super absorber for broadband low-frequency underwater sound
Scientific Reports, 2023 In this work, an ultrathin acoustic metamaterial formed by space-coiled water channels with a rubber coating is proposed for underwater sound absorption. The proposed metamaterial achieves perfect sound absorption ( $$\alpha$$ α > 0.99) at 181 Hz, which
Xindong Zhou +2 more
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Mechanical strength of highly porous ceramics [PDF]
Physical Review B, 1991 This paper reports on the mechanical strength of highly porous ceramics in terms of the Weibull and Duxbury-Leath distributions. More than 1000 side-crushing strength tests on silica-catalyst carriers of various particle sizes have been performed in series. Within a series, preparation conditions were kept constant.
VANDENBORN, IC +4 more
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Bio-inspired nano rotor investigation based on UVLM
Biosurface and Biotribology, 2019 Nano rotor is of great value in military and civilian applications. Due to its nano size, it works at an ultra-low Reynolds number and aerodynamic performance deteriorates dramatically.
Zhao Shanyong +4 more
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Aerodynamic Effects of Ceiling and Ground Vicinity on Flapping Wings
Applied Sciences, 2022 The combined ceiling and ground effect on the aerodynamics of a hovering flapping wing is investigated using numerical simulations. In the simulations, the wing was located between the ceiling and the ground.
Xueguang Meng +4 more
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Theoretical and Applied Mechanics Letters, 2015 Under an applied voltage, dielectric elastomers (DEs) produce an actuation strain that is nonlinear, partly because of the material properties. In this study, an experimental characterization is conducted to evaluate how the ambient temperature and pre ...
Lei Liu +7 more
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CNN Training with Twenty Samples for Crack Detection via Data Augmentation
Sensors, 2020 The excellent generalization ability of deep learning methods, e.g., convolutional neural networks (CNNs), depends on a large amount of training data, which is difficult to obtain in industrial practices.
Zirui Wang +3 more
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Experimental Research on Wind-Induced Flag-Swing Piezoelectric Energy Harvesters
Shock and Vibration, 2021 Piezoelectric cantilever beams, which have simple structures and excellent mechanical/electrical coupling characteristics, are widely applied in energy harvesting. When the piezoelectric cantilever beam is in a wind field, we should consider not only the
Jianjun Liu +4 more
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