Results 31 to 40 of about 52,653 (304)

Early Detection of Subsurface Fatigue Cracks in Rolling Element Bearings by the Knowledge-Based Analysis of Acoustic Emission

open access: yesSensors, 2022
Aiming at early detection of subsurface cracks induced by contact fatigue in rotating machinery, the knowledge-based data analysis algorithm is proposed for health condition monitoring through the analysis of acoustic emission (AE) time series.
Einar Løvli Hidle   +4 more
doaj   +1 more source

HIERARCHICAL DIAGNOSTIC MODEL SYNTHESIS FOR DATAFLOW REAL-TIME COMPUTING SYSTEM [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. The paper considers design issues for diagnostic tools of fault detection in addressing information exchanges between software modules for real-time dataflow computing systems.
Egor V. Lukoyanov   +1 more
doaj   +1 more source

Off-Design Analysis Method for Compressor Fouling Fault Diagnosis of Helicopter Turboshaft Engine

open access: yesModelling, 2023
Fouling, caused by the adhesion of fine materials to the blades of the compressor’s last stages, changes the airfoil’s shape and function and the inlet flow angle on the blades.
Farshid Bazmi, Afshin Rahimi
doaj   +1 more source

Tacholess Time Synchronous Averaging for Gear Fault Diagnosis in Wind Turbine Gearboxes Using a Single Accelerometer

open access: yesMachines
Wind power is increasingly seen as a global, sustainable, and eco-friendly energy option. However, one significant obstacle to further wind energy investment is the high failure rate of wind turbines.
Trong-Du Nguyen   +3 more
doaj   +1 more source

Spectrogram Zeros Method for Rolling Bearing Fault Diagnosis Under Variable Rotating Speeds

open access: yesIEEE Access
Diagnosing rolling bearing faults is critical for maintaining machinery reliability, as these components are essential in reducing friction in rotating systems.
Trong-Du Nguyen   +3 more
doaj   +1 more source

Improvements in the Wavelet Transform and Its Variations: Concepts and Applications in Diagnosing Gearbox in Non-Stationary Conditions

open access: yesApplied Sciences
Wavelet transform is a powerful time-frequency-based analysis method often used in gear fault diagnostics. The development of wavelet transform is closely linked to the improvement of resolution.
Trong-Du Nguyen, Phong-Dien Nguyen
doaj   +1 more source

Data-Driven Fault Diagnostics for Industrial Processes: An Application to Penicillin Fermentation Process

open access: yesIEEE Access, 2021
We consider the problem of fault detection and isolation for the penicillin fermentation process. A penicillin fermentation process is a highly complex and nonlinear dynamic process with batch processing.
Muhammad Asim Abbasi   +5 more
doaj   +1 more source

Fuzzy fault diagnostic system based on fault tree analysis [PDF]

open access: yesProceedings of 1995 IEEE International Conference on Fuzzy Systems. The International Joint Conference of the Fourth IEEE International Conference on Fuzzy Systems and The Second International Fuzzy Engineering Symposium, 2002
A method is presented for process fault diagnosis using information from fault tree analysis and uncertainty/imprecision of data. Fault tree analysis, which has been used as a method of system reliability/safety analysis, provides a procedure for identifying failures within a process.
Yang, Zong Xiao   +3 more
openaire   +2 more sources

A One-Versus-All Class Binarization Strategy for Bearing Diagnostics of Concurrent Defects

open access: yesSensors, 2014
In bearing diagnostics using a data-driven modeling approach, a concern is the need for data from all possible scenarios to build a practical model for all operating conditions.
Selina S. Y. Ng   +2 more
doaj   +1 more source

Online Fault-Tolerant Onboard Aeroengine Model Tuning Structure

open access: yesInternational Journal of Aerospace Engineering, 2016
Online onboard aeroengine models (OBEMs) have been widely used in health management, fault diagnostics, and fault-tolerant control. A mismatch between the OBEM and the actual engine may be caused by a variety of factors such as health degradation or ...
Shuiting Ding   +3 more
doaj   +1 more source

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