Results 101 to 110 of about 813,317 (386)
Vibrational Diagnostics of Rotating Machinery Malfunctions
International Journal of Rotating Machinery, 1995 This paper outlines rotating machinery malfunction diagnostics using vibration data in correlation with operational process data. The advantages of vibration monitoring systems as a part of preventive/predictive maintenance programs are emphasized. After
Agnes Muszynska
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Research investigation of helicopter main rotor/tail rotor interaction noise [PDF]
Acoustic measurements were obtained in a Langley 14 x 22 foot Subsonic Wind Tunnel to study the aeroacoustic interaction of 1/5th scale main rotor, tail rotor, and fuselage models.
Fitzgerald, J., Kohlhepp, F.
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Unsteady Aerodynamic Interaction Between Rotor and Ground Obstacle [PDF]
, 2018 The mutual aerodynamic interaction between rotor wake and surrounding obstacles is complex, and generates high compensatory workload for pilots, degradation of the handling qualities and performance, and unsteady force on the structure of the obstacles.
Barakos, George N. +4 more
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Advanced Sustainable Systems, EarlyView.This study explores the potential of locally harvested Phallusia mammillata, a tunicate usually discarded as waste from mussles farming as a viable source for producing various high‐grade cellulose derivatives in the form of nanofibrils (NFC) and nanocrystals (CNC). Abstract Ascidians are ubiquitous filter‐feeding marine invertebrates, the only animals
Andrea Riccioni +6 more
wiley +1 more source
Friction, 2019 In this paper, a square textured parallel slider is considered for a study to improve the hydrodynamic performance of moving parts. The numerical method is employed for the analysis of a square texture with different bottom profiles: flat, triangle T1 ...
Nilesh D. Hingawe, Skylab P. Bhore
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Bistable molecular conductors with a field-switchable dipole group
, 2002 A class of bistable "stator-rotor" molecules is proposed, where a stationary bridge (stator) connects the two electrodes and facilitates electron transport between them.
A. M. Bratkovsky +16 more
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Advanced Theory and Simulations, EarlyView.The seal louse Echinophthirius horridus has uniquely shaped setae that may reduce drag during its host's dives. Using numerical simulations, this study demonstrates that their natural inclination promotes vortex formation, minimizing friction and energy loss. These findings provide insights into biological surface adaptations and may inspire the design
Anika Preuss +3 more
wiley +1 more source
Friction, 2019 To reveal nonlinear dynamic rules of low viscosity fluid-lubricated tilting-pad journal bearings (TPJBs), the effects of design parameters on journal center orbits and dynamic minimum film thicknesses of water-lubricated TPJBs with and without static ...
Yingze Jin +3 more
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Lubricants, 2020 In the production and gathering process of coal gas, the complex composition of the coal gas, harsh environments, the complex medium, and high content of solid particles in slurry cause the equipment malfunctions and even failure because of erosion and ...
Qunfeng Zeng, Wenchuang Qi
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Field Telemetry of Blade-rotor Coupled Torsional Vibration at Matuura Power Station Number 1 Unit [PDF]
, 1991 The quasi-modal reduction technique and finite element model (FEM) were used to construct an analytical model for the blade-rotor coupled torsional vibration of a steam turbine generator of the Matuura Power Station.
Isii, Kuniyoshi +3 more
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