Results 111 to 120 of about 77,768 (302)
Separation of rotating machines vibration signals
, 2005 International audienceAs the standards are becoming more and more strict, manufacturers are concerned in reducing noise and vibration levels in machines.
Antoni, Jérôme, Boustany, Roger
core
An experimental study of clogging fault diagnosis in heat exchangers based on vibration signals
, 2016 The water-circulating heat exchangers employed in petrochemical industrials have attracted great attentions in condition monitoring and fault diagnosis. In this paper, an approach based on vibration signals is proposed.
Jianfeng Huang (570138) +4 more
core +1 more source
Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor
Advanced Functional Materials, EarlyView.Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben +6 more
wiley +1 more source
Cyclostationary modelling of rotating machine vibration signals
, 2004 International audienceThis paper is dedicated to modelling rotating machine signals as cyclostationary processes, with strong emphasis on the peculiarities and pitfalls that this issue implies. The objective is to demonstrate that machine signals require
El Badaoui, Mohamed +3 more
core +1 more source
X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites
Advanced Functional Materials, EarlyView.We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim +21 more
wiley +1 more source
WAVELET ANALYSIS FOR VIBRATION SIGNALS
Electrica, 2008 This paper presents an alternative method to classical Fourier transform approaches used in data analysis. In this manner, application of Continuous Wavelet Transform (CWT) was introduced for vibration data which is collected by an accelerometer replaced
Tayfun KAYNAŞ, Serhat ŞEKER
doaj +2 more sources
Meitan xuebaoElectromagnetic radiation and vibration monitoring technologies are widely used in the monitoring and early warning of dynamic disasters in underground engineering, which is of great significance to the safe and efficient development of underground ...
Dazhao SONG +5 more
doaj +1 more source
Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene
Advanced Functional Materials, EarlyView.Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus +8 more
wiley +1 more source
Blind Source Separation of Internal Combustion Engine Vibration Signals
, 2005 Internal combustion engines have several vibration sources, such as combustion, fuel injection, piston slap and valve operation. For machine condition monitoring or design improvement purposes, it is necessary to separate the vibration signals caused by ...
Antoni, J., Liu, Xianhua, Randall, R.
core
Diagnosis of the wear of gears in the gearbox using the wavelet packet transform
Metalurgija, 2014 The paper presents research aimed at diagnosing early cases of wear of gears tooth surface in the gearbox based on measurements of vibration signals and their processing using the wavelet packet transform.
T. Figlus, M. Stańczyk
doaj