Condition-based maintenance strategies for a partially observable deteriorating system

2011 ◽  
pp. 2279-2285 ◽  
Author(s):  
E Deloux ◽  
M Fouladirad ◽  
C Bérenguer
Keyword(s):  
Condition Based Maintenance ◽  
Maintenance Strategies ◽  
Partially Observable

scholarly journals Tribology and Maintenance of Machinery – A Review

2021 ◽  
pp. 16-20
Author(s):  
Chandan Chattoraj ◽  
Keyword(s):  
Remaining Useful Life ◽  
Condition Based Maintenance ◽  
Maintenance Strategies ◽  
Cost Benefits ◽  
Maintenance Practice ◽  
Useful Life ◽  
The Cost

The present paper considers the tribological principles on the maintenance of machinery whose three important areas are – Preventive, Condition Based and Proactive. Although breakdown is kept out of view, the morphology and analysis of failure provide important inputs for maintenance strategies. Condition based maintenance depends on three D’s – Detection, Diagnosis and Decision. In many machinery systems, the problem of predicting the remaining useful life – the Proactive part of the program, and evaluating the cost benefits are of enormous importance. Here the authors endeavor to highlight how the tribologist can significantly improve the maintenance practice.

Maintenance Strategy Optimization for Computer Numerical Control Machine Tools

2015 ◽  
Vol 809-810 ◽  
pp. 1504-1509 ◽  
Author(s):  
Ana Lacramioara Ungureanu ◽  
Gheorghe Stan ◽  
Paul Alin Butunoi
Keyword(s):  
Machine Tools ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Condition Based Maintenance ◽  
Financial Impact ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Maintenance Strategies ◽  
Time Period ◽  
A Company

In this paper are proposed two new approaches to maintenance strategies for Computer Numerical Control (CNC) machine tools. The analysis is done for different families of CNC machine tools from S.C. Elmet Bacau, a company specialized in aviation. In maintenance actions applied to CNC machine tools is very important to know the evolution of defects and critical state of electrical and mechanical components. The results of this analysis concludes that maintenance actions can be judged by the developing time period diagram, between failure appearance and interruptions in operation. It is also analyzed the financial impact, revealed from known maintenance strategies adopted on CNC machine tools, resulting in a positive approach of condition based maintenance.

scholarly journals Development and Optimization of a Condition-Based Maintenance Policy with Sustainability Requirements for Production System

2018 ◽  
Vol 2018 ◽  
pp. 1-19 ◽  
Author(s):  
Aiping Jiang ◽  
Ning Dong ◽  
Kwok Leung Tam ◽  
Chonghao Lyu
Keyword(s):  
Energy Consumption ◽  
Environmental Impact ◽  
System Reliability ◽  
Carbon Dioxide Emissions ◽  
Condition Based Maintenance ◽  
Sensitivity Analyses ◽  
Maintenance Policy ◽  
Major Objective ◽  
Maintenance Strategies ◽  
Ecological Aspects

In the field of condition-based maintenance, maintenance costs and system reliability criteria are the primary considerations for traditional maintenance management. These methods lack consideration of the environmental impact caused by equipment degradation, such as excessive emissions and energy consumption. In addition, because equipment degradation has various impacts on the ecological environment, companies with excessive emissions and energy consumption can receive huge fines, making it of great value to study ecoconscious maintenance strategies. In this paper, we propose a condition-based maintenance strategy considering energy consumption and carbon dioxide emissions. The major objective of the research is to extend a model which integrates ecological aspects with maintenance decision-making and optimization. The simulation and sensitivity analyses conducted verify that the model proposed can minimize total costs, as well as the environmental impact.

scholarly journals Tribology and Maintenance of Machinery - A Review

2021 ◽  
Vol 1 (2) ◽  
pp. 16-20
Author(s):  
Chandan Chattoraj
Keyword(s):  
Remaining Useful Life ◽  
Condition Based Maintenance ◽  
Maintenance Strategies ◽  
Cost Benefits ◽  
Maintenance Practice ◽  
Useful Life ◽  
The Cost

The present paper considers the tribological principles on the maintenance of machinery whose three important areas are – Preventive, Condition Based and Proactive. Although breakdown is kept out of view, the morphology and analysis of failure provide important inputs for maintenance strategies. Condition based maintenance depends on three D’s – Detection, Diagnosis and Decision. In many machinery systems, the problem of predicting the remaining useful life – the Proactive part of the program, and evaluating the cost benefits are of enormous importance. Here the authors endeavor to highlight how the tribologist can significantly improve the maintenance practice

scholarly journals Condition-Based Maintenance Strategies to Enhance the Durability of ETICS

2021 ◽  
Vol 13 (12) ◽  
pp. 6677
Author(s):  
Cláudia Ferreira ◽  
Ana Silva ◽  
Jorge de Brito ◽  
Ilídio S. Dias ◽  
Inês Flores-Colen
Keyword(s):  
Service Life ◽  
Condition Based Maintenance ◽  
Performance Criteria ◽  
Time Interval ◽  
Maintenance Strategies ◽  
Total Replacement ◽  
Remaining Service Life ◽  
The Impact ◽  
Maintenance Model

The increase of awareness with sustainability and the desire of reducing the energy consumption in the construction sector haved increased the application of External Thermal Insulation Composite Systems (ETICS) across Europe in the last decades. Nevertheless, the implementation of appropriate maintenance strategies is still neglected. The aim of this study is to analyse the impact of different maintenance strategies. For that purpose, a condition-based maintenance model, based on Petri nets, is used to evaluate three maintenance strategies: MS1—total replacement only; MS2—combination of minor intervention and total replacement; and MS3—combination of cleaning operations, minor intervention, and total replacement. In the end, a multi-criteria analysis is used to discuss the impact of the three maintenance strategies proposed, evaluating the remaining service life, the global costs over time, the ETICS’ degradation condition, and the number of replacements (end of service life) over the time horizon. For this purpose, a sample of 378 ETICS was analysed, based on in situ visual inspections, carried out in Portugal. The results from this study reveal that maintenance plays an important role to increase the durability of ETICS, and therefore their sustainability. Regular maintenance can promote the extension of the ETICS’s service life between 88% and 159% (between 15 to 27 years), improve the global degradation condition of the ETICS, and reduce the impact on users by reducing the number of deeper interventions. Further research is essential to optimise the maintenance strategies (time interval between inspections, stakeholders’ performance criteria, and environmental exposure).

scholarly journals A Novel Idea for Optimizing Condition-Based Maintenance Using Genetic Algorithms and Continuous Event Simulation Techniques

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Mansoor Ahmed Siddiqui ◽  
Shahid Ikramullah Butt ◽  
Aamer Ahmed Baqai ◽  
Jiping Lu ◽  
Faping Zhang
Keyword(s):  
Prognostic Model ◽  
Condition Based Maintenance ◽  
Search Process ◽  
Maintenance Strategies ◽  
Event Simulation ◽  
Simulation Techniques ◽  
Wide Range ◽  
Direct Linkage ◽  
Mc Simulation ◽  
Synergic Model

Effective maintenance strategies are of utmost significance for system engineering due to their direct linkage with financial aspects and safety of the plants’ operation. At a point where the state of a system, for instance, level of its deterioration, can be constantly observed, a strategy based on condition-based maintenance (CBM) may be affected; wherein upkeep of the system is done progressively on the premise of monitored state of the system. In this article, a multicomponent framework is considered that is continuously kept under observation. In order to decide an optimal deterioration stage for the said system, Genetic Algorithm (GA) technique has been utilized that figures out when its preventive maintenance should be carried out. The system is configured into a multiobjective problem that is aimed at optimizing the two desired objectives, namely, profitability and accessibility. For the sake of reality, a prognostic model portraying the advancements of deteriorating system has been employed that will be based on utilization of continuous event simulation techniques. In this regard, Monte Carlo (MC) simulation has been shortlisted as it can take into account a wide range of probable options that can help in reducing uncertainty. The inherent benefits proffered by the said simulation technique are fully utilized to display various elements of a deteriorating system working under stressed environment. The proposed synergic model (GA and MC) is considered to be more effective due to the employment of “drop-by-drop approach” that permits successful drive of the related search process with regard to the best optimal solutions.

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