Results 1 to 10 of about 27,916,807 (331)

Prognostics and Health Management of Rotating Machinery via Quantum Machine Learning

open access: yesIEEE Access, 2023
Prognostics and Health Management (PHM) concerns predicting machines’ behavior to support maintenance decisions through failure modes diagnosis and prognosis.
Caio Bezerra Souto Maior   +4 more
doaj   +1 more source

Lifetime Prediction and Aging Mechanism of Glass Fiber Reinforced Acrylate‐Styrene‐Acrylonitrile/Polycarbonate Composite under Hygrothermal Conditions

open access: yesMacromolecular Materials and Engineering, 2023
The development of fifth‐generation technology has resulted in increased demand for materials with low dielectric losses and superior thermal and mechanical properties.
Peijiang Liu   +9 more
doaj   +1 more source

An Improved Nonlinear Cumulative Damage Model Considering the Influence of Load Sequence and Its Experimental Verification

open access: yesApplied Sciences, 2021
According to the change characteristics in the toughness of the metal material during the fatigue damage process, the fatigue tests were carried out with the standard 18CrNiMo7-6 material.
Wei Wang   +4 more
doaj   +1 more source

Power Grids as Complex Networks: Resilience and Reliability Analysis

open access: yesIEEE Access, 2021
Power grids are cyber-physical systems and can be modelled as network systems where individual units (generators, busbars and loads) are interconnected through physical and cyber links.
A. Amani, M. Jalili
semanticscholar   +1 more source

A Dynamic Bayesian Network Structure for Joint Diagnostics and Prognostics of Complex Engineering Systems

open access: yesAlgorithms, 2020
Dynamic Bayesian networks (DBNs) represent complex time-dependent causal relationships through the use of conditional probabilities and directed acyclic graph models.
Austin D. Lewis, Katrina M. Groth
doaj   +1 more source

Early Performance Degradation Detecting Method for PMSM Based on Change in Frequency Domain Features of Three-Phase Stator Current

open access: yesIEEE Access, 2023
Detect early performance degradation of permanent magnet synchronous motor (PMSM) is very meaningful for preventive maintenance and avoiding catastrophe failure. By fully taking into account effects of rotor flux harmonics and stator current harmonics on
Qingchuan He, Jun Pan, Xiaotian Lyu
doaj   +1 more source

Optimal Maintenance Policy for Corroded Oil and Gas Pipelines using Markov Decision Processes

open access: yesInternational Journal of Prognostics and Health Management, 2022
This paper presents a novel approach to determine optimal maintenance policies for degraded oil and gas pipelines due to internal pitting corrosion. This approach builds a bridge between Markov process-based corrosion rate models and Markov decision ...
Roohollah Heidary   +2 more
doaj   +1 more source

Idealized hydrodynamical numerical model dataset with no-river runoff at the western tropical North Atlantic [version 1; peer review: 2 approved]

open access: yesOpen Research Europe, 2023
The western tropical North Atlantic (WTNA) is a very complex region, with the influence of intense western boundary currents in connection with equatorial zonal currents, important atmospheric forcings (e.g Intertropical Convergence Zone), mesoscale ...
Humberto L. Varona   +3 more
doaj   +1 more source

Contact reliability modeling and assessment of electrical connectors with multi-aperture slotted leaf spring contacts

open access: yesAdvances in Mechanical Engineering, 2023
Multi-aperture electrical connectors are widely used in the aerospace system to provide high-reliability and high-quality connections. The existing reliability assessment methods only focus on the single-aperture electrical connectors, and ignored the ...
Ping Qian   +4 more
doaj   +1 more source

A Unified Multi-Objective Optimization Framework for UAV Cooperative Task Assignment and Re-Assignment

open access: yesMathematics, 2022
This paper focuses on cooperative multi-task assignment and re-assignment problems when multiple unmanned aerial vehicles (UAVs) attack multiple known targets.
Xiaohua Gao   +7 more
doaj   +1 more source

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