Results 141 to 150 of about 388,267 (293)
A Fiber Bragg Grating Based Torsional Vibration Sensor for Rotating Machinery. [PDF]
Sensors (Basel), 2018 Wang J, Wei L, Li R, Liu Q, Yu L.
europepmc +1 more source
Recent advances and prospects for high‐efficiency blue hot exciton organic light‐emitting diodes
FlexMat, EarlyView.Blue organic light‐emitting diodes (OLEDs) face great challenges in achieving the balance between color purity, device efficiency, and stability. Hot exciton materials offer a solution by rapidly converting non‐emissive triplet excitons into singlet ones through a high‐lying reverse intersystem crossing process.
Xiaoen Shi +3 more
wiley +1 more source
Vibrations in Marine Power Transmission System
Scientific Journal of Gdynia Maritime University, 2017 Vibration analyses of marine machines and structures are one of the most important during the design process as well as during exploitation. Vibrations of ship hull (including superstructure and main engine body) are separately analysed from the ...
D. Doan, L. Murawski
doaj
A note on a torsional vibration generator
, 1981 This paper describes the design method of a torsional vibration generator which can reproduce the torsional vibration of an arbitrary wave form. In order to perform the torsional vibration tests for the internal combustion engine, a torsional vibration ...
コガ, カツユキ +7 more
core
Flexible photocatalytic materials: From substrate engineering to multi‐field synergistic enhancement
FlexMat, EarlyView.This review examines flexible photocatalytic systems, covering substrate evolution from polymers to biomass, fabrication methods like electrospinning, and key mechanical and optoelectrochemical metrics under deformation. Enhancement strategies are critically discussed, followed by applications in energy conversion, environmental remediation, and ...
Weiqi Wang +3 more
wiley +1 more source
International Journal of Chemical Kinetics, EarlyView.ABSTRACT We present chemical kinetic rate constants for the cis to trans isomerisation or rotamerization of monomeric seleno‐, thio‐, and formic acids and that of three of their dimeric species, based on variational transition state theory and multidimensional tunneling calculations in the gas‐phase, from 10 K to 300 K. These provide, firstly, reliable
Judith Wurmel, John M. Simmie
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Laser &Photonics Reviews, EarlyView.Femtosecond‐laser inscription enables precise positioning of fiber Bragg gratings within the cladding, introducing new spatial and modal design freedoms. Auxiliary‐waveguide, near‐core evanescent‐field, and direct cladding‐mode‐excitation architectures provide complementary pathways toward multiparameter, vector, distributed, and environmentally ...
Koustav Dey +3 more
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International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT In this paper, an integrated digital twin‐based fault‐diagnosis framework is proposed to detect bolt loosening in flanged pipe connections. The approach combines finite element‐based numerical modeling, experimental modal analysis, and advanced signal processing‐assisted deep learning to achieve reliable loosening detection under operational ...
Milad Shabani Yousefabad +4 more
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Frequency domain analysis of torsional vibration of single pile in orthotropic viscoelastic layered foundation. [PDF]
Sci RepLian Z, Zhu Y, Jiu Y.
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International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Vibration isolation has long been a critical area of research, with the design of isolators based on the mechanical properties of Euler buckling beams representing one of the primary approaches. Traditionally, the focus has been on utilizing the negative stiffness characteristics of a post‐buckled Euler beam in parallel with positive stiffness
Yichang Feng +3 more
wiley +1 more source