Results 31 to 40 of about 265,602 (329)

Influence of Structural Pseudo-Static Components on Seismic Responses of Low-Medium Speed Maglev Vehicle-Bridge System

open access: yesShanghai Jiaotong Daxue xuebao, 2022
Unlike the traditional seismic analysis on bridge engineering which mainly concerns the relative motion, the seismic analysis of vehicle-bridge system focuses more on the absolute motion of the vehicle system, where the pseudo-static components need to ...
HUANG Fenghua, CHENG Bin, TENG Nianguan
doaj   +1 more source

Static and dynamic aspects of an air gap capacitor [PDF]

open access: yes, 1992
This paper deals with the theory of an air-gap capacitor used as a micromechanical resonator. Both static and dynamic aspects are discussed. A single-element approach for the electrostatic excitation and capacitive detection of the vibrational motion of ...
IJntema, Dominicus J.   +1 more
core   +3 more sources

Electromagnetic Acoustic Detection of Steel Plate Defects Based on High-Energy Pulse Excitation

open access: yesApplied Sciences, 2020
The conventional electromagnetic ultrasonic transducers (EMATs) rely on the static magnetic field created by magnets. The magnet increases the size of the EMATs, and the strong magnetic force of the magnet attracts the detected steel and even ...
Suzhen Liu   +4 more
doaj   +1 more source

Effect of Parameters on the Design of a Suspension System with Four Oblique Springs

open access: yesShock and Vibration, 2021
This paper presents the fundamental static and dynamic characteristics of a suspension system consisting of four linear springs arranged in an X-shaped configuration to achieve geometric nonlinearity.
Gianluca Gatti
doaj   +1 more source

All-Fiber Pulse-Train Optical Frequency-Domain Interferometer for Dynamic Absolute Distance Measurements of Vibration

open access: yesPhotonics, 2023
In this paper, we propose an all-fiber co-axial optical frequency-domain interferometer (OFDI) in a pulse-train mode with a sample rate of 9 kHz for measuring the vibrations in an internal structure without any contact.
Heli Ma   +10 more
doaj   +1 more source

A versatile dual spot laser scanning confocal microscopy system for advanced fluorescence correlation spectroscopy analysis in living cell [PDF]

open access: yes, 2009
A fluorescence correlation spectroscopy (FCS) system based on two independent measurement volumes is presented. The optical setup and data acquisition hardware are detailed, as well as a complete protocol to control the location, size and shape of the ...
Aillaud, A.   +5 more
core   +2 more sources

Frequency response function measurement of a rotor system utilizing electromagnetic excitation by a built-in motor

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
In this paper, we propose a practical method for evaluating the robustness and stability of rotating machines. This entails using electromagnetic excitation and measuring the frequency response functions (FRFs) of the rotor system during rotation.
Ren YANG   +4 more
doaj   +1 more source

EVALUATION OF VOLTAGE STABILITY DYNAMIC LOADING MARGIN CONSIDERING THE EFFECT OF LOAD MODELS, EXCITATION SYSTEM PARAMETERS AND REACTIVE POWER GENERATION LIMITS OF GENERATORS WITH A COMBINATION METHOD [PDF]

open access: yesمجله مدل سازی در مهندسی, 2010
Nowadays, Voltage stability is an important types of power system stabilities. To analysis of voltage stability, different static and dynamic boundaries such as maximum Loadability point (MLP) and bifurcation points such as saddle node bifurcation (SNB),
نیما Amjady   +1 more
doaj   +1 more source

Optimal Dephasing for Ballistic Energy Transfer in Disordered Linear Chains

open access: yes, 2017
We study the interplay between dephasing, disorder, and openness on transport efficiency in a one-dimensional chain of finite length $N$, and in particular the beneficial or detrimental effect of dephasing on transport.
Borgonovi, Fausto   +3 more
core   +1 more source

Nonanalytic corrections to the specific heat of a three-dimensional Fermi liquid [PDF]

open access: yes, 2005
We revisit the issue of the leading nonanalytic corrections to the temperature dependence of the specific heat coefficient, $\gamma (T)=C(T)/T,$ for a system of interacting fermions in three dimensions.
A. A. Abrikosov   +13 more
core   +1 more source

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