Results 101 to 110 of about 9,473,807 (397)
International Journal of Adaptive Control and Signal Processing, EarlyView.This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley +1 more source
Experimental Study on Dynamic Mechanical Properties of Sandstone Under Different Damage Degrees
Applied SciencesTo investigate the effects of impact loads during drilling under various geostress conditions on rock damage characteristics, strength properties, and energy absorption in geotechnical engineering, dynamic uniaxial and dynamic triaxial compression ...
Zhi Liu, Xuefeng Si, Wanrong Wu
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Impact energy absorber Patent [PDF]
, 1967 Impact energy absorber with decreasing absorption ...
Hoffman, I. S., Vranas, T.
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Coherent Virtual Absorption Based on Complex Zero Excitation for Ideal Light Capturing
, 2017 Absorption of light is directly associated with dissipative processes in a material. In suitably tailored resonators, a specific level of dissipation can support coherent perfect absorption, the time-reversed analogue of lasing, which enables total ...
Alù, Andrea +2 more
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Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Energy absorption capacity of pseudoelastic fiber-reinforced composites
Science and Engineering of Composite Materials, 2014 Pseudoelastic fiber-reinforced metal matrix composite with enhanced ductility and energy absorption capacity was developed. This composite system relies on the distributed nature of large pseudoelastic strains to mitigate localization of inelastic ...
Sayyar Mohammad +2 more
doaj +1 more source
Conversion of laser energy to gas kinetic energy [PDF]
Techniques for the gas phase absorption of laser radiation for ultimate conversion to gas kinetic energy are discussed. Particular emphasis is placed on absorption by the vibration rotation bands of diatomic molecules at high pressures.
Caledonia, G. E.
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, 2016 A necessary condition for the validity of the linear viscoelastic model for a (passive) polymeric cylinder with an ultrasonic hysteresis-type absorption submerged in a non-viscous fluid requires that the absorption efficiency is positive (Qabs > 0 ...
Fellah, Z. E. A., Mitri, F. G.
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Advanced Engineering Materials, EarlyView.Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat +6 more
wiley +1 more source
Seasonal Solar Thermal Absorption Energy Storage Development
CHIMIA, 2015 This article describes a thermochemical seasonal storage with emphasis on the development of a reaction zone for an absorption/desorption unit. The heat and mass exchanges are modelled and the design of a suitable reaction zone is explained.
Xavier Daguenet-Frick +6 more
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