Results 31 to 40 of about 563,707 (254)

Monitoring Variability in Melt Pool Spatiotemporal Dynamics (VIMPS): Towards Proactive Humping Detection in Additive Manufacturing

open access: yesJournal of Manufacturing and Materials Processing
Humping is a common defect in direct energy deposition processes that reduces the geometric integrity of printed products. The available literature on humping detection is deemed reactive, as they focus on detecting late-stage melt pool spatial ...
Mohamed Abubakr Hassan   +3 more
doaj   +1 more source

Pavement Maintenance Decision Making Based on Optimization Models

open access: yesApplied Sciences, 2021
Pavement maintenance prioritization considering both quality and cost is an important decision-making problem. In this paper, the actual pavement condition index of city roads was calculated using municipal patrol data.
Shitai Bao   +4 more
doaj   +1 more source

Criticality Analysis for Maintenance Purposes: A Study for Complex In‐service Engineering Assets [PDF]

open access: yes, 2015
The purpose of this paper is to establish a basis for a criticality analysis, considered here as a prerequisite, a first required step to review the current maintenance programs, of complex in‐service engineering assets. Review is understood as a reality
Crespo Márquez, Adolfo   +3 more
core   +1 more source

The Balance and Optimization Model of Coal Supply in the Flow Representation of Domestic Production and Imports: The Ukrainian Case Study

open access: yesEnergies, 2022
The successful supply of an economy with coal fuel, for a country that carries out its large-scale extraction and import, is a complex production and logistics problem.
Tetiana Bilan   +7 more
doaj   +1 more source

OPTIMAL MAINTENANCE OF SEMI-MARKOV MISSIONS

open access: yesProbability in the Engineering and Informational Sciences, 2014
We analyze optimal replacement and repair problems of semi-Markov missions that are composed of phases with random sequence and durations. The mission process is the minimal semi-Markov process associated with a Markov renewal process. The system is a complex one consisting of non-identical components whose failure properties depend on the mission ...
Cekyay, Bora, Ozekici, Suleyman
openaire   +5 more sources

Optimization tools applied to physical asset maintenance management: state of the art

open access: yesDyna, 2021
This article presents the state of the art of the application of optimization tools such as Genetic Algorithms, Simulation, Neural Networks, Markov Chains and Bayesian Networks in the physical asset maintenance management.
Yodaira Borroto Pentón   +3 more
doaj   +1 more source

OBSOLESCENCE ANALYSIS OF MAINTENANCE AND OPERATION OF PUBLIC TRANSPORT SYSTEMS. CASE STUDY: TRAMWAY OF ORADEA [PDF]

open access: yesJournal of Sustainable Energy, 2015
Maintenance of transport infrastructure and vehicles is important cost element of the budget of local transport companies, cost reduction is optimized by adapting appropriate strategies.
CSUZI I. , CSUZI B.I.
doaj  

Analysis of Uncertainty in Conveyor Belt Condition Assessment Using Time-Based Indicators

open access: yesApplied Sciences
This study analyzes the impact of the type of transported material (overburden, lignite, mixture) on the rate of core damage accumulation in Type St conveyor belts in open-pit mines. The research was conducted using the DiagBelt+ diagnostic system, which
Aleksandra Rzeszowska   +3 more
doaj   +1 more source

Research of Preventive Maintenance Task Optimization of Military Aircraft Based on S4000P

open access: yesHangkong gongcheng jinzhan, 2020
Preventive maintenance is the main measure to restore and maintain the safety and reliability of the aircraft, and its optimization as a common concern is concerned by both aircraft manufacturers and users.
NAN Yanfei, JIANG Qingxi, LIN Cong
doaj   +1 more source

Maintenance Service Configuration Optimization for Complex Equipment

open access: yesSystems, 2023
Maintenance activities mostly depend on the specific conditions of individual equipment, being defined as personalized businesses. In order to improve the efficiency of maintenance activities for complex equipment in lots, the thinking of mass ...
Chunliu Zhou   +4 more
doaj   +1 more source

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