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
doaj +1 more source
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
doaj +1 more source
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
openaire +3 more sources
A technique for the measurement of reinforcement fibre tensile strength at sub-millimetre gauge lengths [PDF]
, 2001 The strength of composite reinforcement fibres is normally measured on samples of much greater length than the actual residual fibre lengths found in many composite materials.
Kalinka, G., Thomason, J.L.
core +4 more sources
Study of the Mechanical Strength Improvement of Wafers for EWT Solar Cells by Chemical Etching after the Drilling Process [PDF]
, 2011 Mechanical stability of EWT solar cells deteriorates when holes are created in the wafer. Nevertheless, the chemical etching after the hole generation process improves the mechanical strength by removing part of the damage produced in the drilling ...
Cueto Felgueroso, Gema +3 more
core +1 more source
Mechanical strength of silica fiber splices after exposure to extreme temperatures [PDF]
, 2012 By using a combination of type-I and regenerated gratings, the mechanical strength of optical fiber splices after exposure to temperatures over 1300 C was characterized. Splice strength was found to decrease with temperature with a secondorder polynomial
Perry, Marcus +4 more
core +2 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source