Damage detection in a real truss bridge using Hilbert-Huang Transform of transient vibrations [PDF]
, 2021 Structural Health Monitoring (SHM) in bridges is an important field, which implements increasingly innovative damage detection strategies for both theoretical developments and laboratory-scale implementations.
Delgadillo Ayala, Rick Milton +1 more
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Bragg grating based integrated photonic Hilbert transformers [PDF]
, 2013 Planar Bragg grating based photonic Hilbert transformers are experimentally demonstrated in this work. Planar Bragg gratings are utilized to implement a general Hilbert transform, a fractional order Hilbert transform and terahertz bandwidth Hilbert ...
Smith, P.G.R. +7 more
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A sufficient condition for the boundedness of operator-weighted martingale transforms and Hilbert transform [PDF]
, 2007 Let W be an operator weight taking values almost everywhere in the bounded positive invertible linear operators on a separable Hilbert space H. We show that if W and its inverse W−1 both satisfy a matrix reverse Holder property introduced in [2], then ...
Pott, S.
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Phase controlled integrated interferometric single-sideband filter based on planar Bragg gratings implementing photonic Hilbert transform [PDF]
, 2013 The first monolithically integrated all-optical single-sideband filter based on photonic Hilbert transform and planar Bragg gratings is proposed and experimentally demonstrated.
Smith, P.G.R. +6 more
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On Finite Hilbert Transforms [PDF]
Transactions of the American Mathematical Society, 1975 Let E be a bounded measurable subset of the real line. The finite Hilbert transform is the operator HE defined on one of the spaces LP(E) (1 1, the Hilbert transform of f at x is defined by (1) Hf(x) = li (rmi) f f(tXt -x) 1dt, provided this latter limit exists. It is known that if f is in LP(R), for p > 1, then Hf exists a.e.
openaire +1 more source
LOW-COST DEVICE FOR FAULT DIAGNOSIS IN BEARINGS BASED ON THE HILBERT-HUANG TRANSFORM [PDF]
, 2023 In order to monitor the condition of machinery complex industrial environments, high-cost equipment is required for signal acquisition and processing.
PABLO CIFUENTES FIALLOS +5 more
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Archives of Metallurgy and Materials, 2015 In this work, we present a novel Hilbert-twin method to compute an envelope and the logarithmic decrement, δ, from exponentially damped time-invariant harmonic strain signals embedded in noise.
Magalas L.B., Majewski M.
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Gearbox Fault Feature Extraction Using Hilbert Transform, S-Transform, and a Statistical Indicator [PDF]
, 2007 Vibration analysis has been widely used in machine fault feature extraction and diagnosis of rotating machinery. The effects of modulation and nonstationarity in vibration signals collected from a faulty gearbox present challenges for fault feature ...
Fan, Xianfeng, Zuo, Ming J.
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Time-Frequency Analysis of Noisy Vibration Signal Based on Improved Hilbert-Huang Transform
Shanghai Jiaotong Daxue xuebao, 2023 Aimed at the phenomenon of modal confusion and lack of practical significance of instantaneous frequency caused by Hilbert-Huang transform (HHT) noisy vibration signal time-frequency analysis, complete ensemble empirical mode decomposition with adaptive ...
SUN Miao, YANG Junkai, WU Li
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Time-varying Lifting Structures For Single-tree Complexwavelet Transform [PDF]
, 2012 In this paper, we describe a single-tree complex wavelet transform method using time-varying lifting structures. In the dualtree complex wavelet transform (DT-CWT), two different filterbanks are executed in parallel to analyze a given input signal, which
A. Enis Cetin +3 more
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