Results 81 to 90 of about 77,563 (254)
Subsynchronous vibrations in a high pressure centrifugal compressor: A case history [PDF]
Two distinct aerodynamically excited vibrations in a high pressure low flow centrifugal compressor are documented. A measured vibration near 21% of running speed was identified as a nonresonant forced vibration which results from rotating stall in the ...
Evans, B. F., Smalley, A. J.
core +1 more source
Motion control and vibration suppression of flexible lumped systems via sensorless LQR control [PDF]
, 2011 This work attempts to achieve motion control along with vibration suppression of flexible systems by developing a sensorless closed loop LQR controller. Vibration suppression is used as a performance index that has to be minimized so that motion control ...
Celebi, Besir +7 more
core
Advanced Functional Materials, EarlyView.This study develops a novel atomic engineering strategy to fine‐tune the spin state of α‐Fe2O3 catalysts toward a medium‐spin state, thereby modulating peroxymonosulfate activation and selectively yielding surface‐bound radicals. Compared with free radicals, surface‐bound radicals exhibit moderated oxidation potential, extended lifespan, surface ...
Shuyu Wang +7 more
wiley +1 more source
LubricantsPolygonal wear affects driving safety and drastically shortens a wheel’s life. This work establishes a wheel–rail coupled system’s rotor dynamics model and a wheel polygonal wear model, taking into account the wheelset’s flexibility, the effect of the ...
Yahong Dong, Shuqian Cao
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2018 This paper presents experiments and an analysis of the self-excited vibration of a plate supported by air pressure. In the analysis, the unsteady fluid force acting on the plate is calculated based on the basic equation of a two-dimensional gap flow ...
Masakazu TAKEDA, Masahiro WATANABE
doaj +1 more source
Friction-Induced Vibration of a Railway Wheelset-Track System and Its Effect on Rail Corrugation
Lubricants, 2020 In the present study, the effect of the radius of railway curved tracks on the slip of a wheel on a rail is studied. A 3D finite-element model of a wheelset-track system is established when the creep force between the wheel and rail is saturated.
Guangxiong Chen
doaj +1 more source
Analisis dan Linierisasi Persamaan Model Matematis Terjadinya Self Excited Vibrations pada Aliran Fluida dalam Selang (Tube) [PDF]
, 2012 Perubahan penampang aliran dapat menyebabkan terjadinya fenomena self excited vibrations karena aliran fluida mengalami Perubahan pola aliran pada saat melewati penampang tersebut.
Sufiyanto, S. (Sufiyanto)
core
Advanced Functional Materials, EarlyView.ABSTRACT Breathable membranes that reject chemical warfare agents (CWAs) are required for next‐generation protective apparel. A dual‐function graphene oxide (GO)‐polyamine architecture is introduced that addresses the long‐standing tradeoff between vapor transmission and CWA selectivity.
Hyungjun Kim +6 more
wiley +1 more source
Flutter analysis of mistuned bladed disk
Nihon Kikai Gakkai ronbunshu, 2015 Although, in designing blades, it is assumed that all blades on a disk are identical (tuned system), the vibration characteristics of the blade is slightly different due to the manufacturing tolerance, the deviation of the material property, and so on ...
Yasutomo KANEKO +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Synergistic interfacial strategy between inorganic ceramic fillers and polymer chains effectively inhibit particle aggregation and interfacial incompatibility. complex covalent and non‐covalent interfacial interactions promote superior uniformity, ultra‐high ceramic filler loading, and strong grain‐to‐grain connectivity, thereby enabling the ...
HakSu Jang +20 more
wiley +1 more source