Improved Envelope Spectrum via Feature Optimisation-gram (IESFOgram): A novel tool for rolling element bearing diagnostics under non-stationary operating conditions
Sign Up to like & getrecommendations! Published in 2020 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2020.106891
Abstract: Abstract Demodulation methods are widely used for bearing diagnostics, based often on the (Squared) Envelope Spectrum after band pass filtering. One of the main challenges of these methods is the detection of a suitable band… read more here.
Keywords: bearing diagnostics; tool; band; speed ... See more keywords
Enhancement of decomposed spectral coherence using sparse nonnegative matrix factorization
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.107747
Abstract: Abstract Integration of the spectral coherence over the domain of spectral frequency is one popular way for reaching the envelope spectrum which is an indispensable tool for the fault diagnosis of rotating machineries. Envelope spectrum… read more here.
Keywords: matrix factorization; coherence; spectral coherence; envelope spectrum ... See more keywords
A weighting function for improvement of spectral coherence based envelope spectrum
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.107929
Abstract: Abstract Envelope analysis plays an essential role in fault diagnostics of rotating machinery. One popular method to attain the envelope spectrum is to integrate the spectral coherence over a chosen spectral frequency band. Considering the… read more here.
Keywords: envelope spectrum; spectral coherence; weighting function; coherence ... See more keywords
An adaptive enhanced envelope spectrum technique for bearing fault detection in conditions characterized by strong noise
Sign Up to like & getrecommendations! Published in 2024 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/ad232d
Abstract: Rolling bearings are widely used in rotating machinery and have a high failure rate. Regrettably, the task of ensuring dependable bearing fault detection presents a formidable challenge, especially when the bearing fault-related characteristics are non-stationary… read more here.
Keywords: strong noise; fault detection; envelope spectrum; bearing fault ... See more keywords
An improved envelope spectrum via Hoyer index-gram for bearing fault extraction
Sign Up to like & getrecommendations! Published in 2024 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/ad3e1f
Abstract: Resonance demodulation is one of the most commonly used methods in rolling bearing fault diagnosis, yet determining the optimal demodulation band has been a significant challenge. The vibration signal from a faulty bearing may include… read more here.
Keywords: spectrum; hoyer index; envelope spectrum; fault ... See more keywords
Envelope Spectrum of the Subwavelength Grating Slot Waveguide Microring Resonator for High-Sensitivity and Wide-Range Refractive Index Sensing Applications
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2024.3389034
Abstract: The silicon-based platform is highly competitive in developing next-generation on-chip chemical, biological, and medical sensing systems. Improving the sensitivity and expanding the detectable range of silicon-based integrated sensors attract great attention. We experimentally demonstrate a… read more here.
Keywords: wide range; mrr; high sensitivity; envelope spectrum ... See more keywords
Autonomous Bearing Fault Diagnosis Based on Fault-Induced Envelope Spectrum and Moving Peaks-Over-Threshold Approach
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2024.3379074
Abstract: Although the envelope-spectrum-based methods for bearing fault diagnosis have been widespread in the scientific community, their application to autonomous diagnosis is hindered by the specified selection of informative frequency bands and the threshold calculation. This… read more here.
Keywords: envelope spectrum; diagnosis; fault diagnosis; fault ... See more keywords
Nonсontact Spectral Express Method for Detecting Corrosion Damage to Metal Products
Sign Up to like & getrecommendations! Published in 2020 at "Russian Journal of Nondestructive Testing"
DOI: 10.1134/s1061830920010118
Abstract: Abstract We propose to use the shape of the envelope of the spectrum of the collection of pulses received from metal products by a straight-beam electromagnetic-acoustic transducer as a new criterion for the presence of… read more here.
Keywords: envelope spectrum; non ontact; metal products; method ... See more keywords
High-sensitivity and wide-range refractive index sensing based on the envelope spectrum of the subwavelength grating waveguide racetrack microring resonator.
Sign Up to like & getrecommendations! Published in 2024 at "Optics letters"
DOI: 10.1364/ol.536732
Abstract: Integrated microring resonators (MRRs) on silicon on insulator (SOI) are attractive candidates for excellent performance sensing systems. In this work, a novel, to the best of our knowledge, subwavelength grating waveguide racetrack microring resonator (SWGW-RMRR)… read more here.
Keywords: wide range; high sensitivity; sensitivity wide; envelope spectrum ... See more keywords