Results 51 to 60 of about 351,760 (158)
A Fiber Optical Sensor For Non-Contact Vibration Measurements [PDF]
, 2009 This paper describes an intensity based optical sensor for the evaluation of accelerations from non-contact displacement measurements. Plastic optical fibers are used to collect the reflected light from several points on the vibrating surface, allowing ...
Casalicchio, Maria Luisa +2 more
core
Holographic vibrometry: Full field holographic vibrometry at ultimate limits [PDF]
, 2015 International audienceHeterodyne holography is an extremely versatile and powerful holographic technique that is able to fully control the amplitude, phase and frequency of both the illumination and holographic reference beams.
Atlan +31 more
core +4 more sources
, 1990 The invention relates to monitoring circuitry for the real time detection of vibrations of a predetermined frequency and which are greater than a predetermined magnitude. The circuitry produces an instability signal in response to such detection.
Bozeman, Richard J., Jr.
core +1 more source
Energies, 2021 Accurately predicting surface vibration signals of diesel engines is the key to evaluating the operation quality of diesel engines. Based on an improved empirical mode decomposition and extreme learning machine algorithm, the characteristics of diesel ...
Yan Shen +3 more
doaj +1 more source
Development of mine-used signal conditioning device of vibration acceleration sensor
Gong-kuang zidonghua, 2014 In view of problem that vibration signal of underground large equipments is difficult to be collected, a mine-used signal conditioning device of vibration acceleration sensor was designed.
JI Xiaodong +3 more
doaj +1 more source
Vibration-based structural interrogation and health monitoring based on nonlinear signal analysis [PDF]
, 2011 Vibration-based structural interrogation and health monitoring is a field which is concerned with the estimation of the current state of a structure or a component from its vibration response with regards to its ability to perform its intended function ...
Trendafilova, Irina
core
Differential phase extraction in an atom gradiometer [PDF]
, 2015 We present here a method for the extraction of the differential phase of an atom gradiometer that exploits the correlation of the vibration signal measured by an auxiliary classical sensor, such as a seismometer or an accelerometer.
Santos, Franck Pereira dos
core +2 more sources
Assessing material densities by vibration analysis and independent component analysis [PDF]
, 2013 The aim of this study was to investigate vibration analysis and independent component analysis (ICA) to assess the density of multiple materials making up a single structure.
Bishop, Nick +5 more
core +1 more source
Vibration signal denoising method for drive roller bearing of mine-used belt conveyor
Gong-kuang zidonghua, 2019 EMD has modal aliasing and ICA requires the number of collected vibration signal should not be less than the number of source signal. In view of the above problems that existed in existing vibration signal denoising method, a vibration signal denoising ...
YANG Xiang +5 more
doaj +1 more source
An improved method for testing performance of vidicons during vibration [PDF]
, 1966 Vidicon electron beam modulation is used for checking the performance of vidicons in mechanical vibration tests. The vidicon electron beam is modulated with an external signal during the write period thereby storing the image on the vidicon ...
Corson, B. R.
core +1 more source