Avancerad sökning

Visar resultat 1 - 5 av 12 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Maintenance strategy for mechanized mining systems : a reliability analysis based approach

   Författare :Uday Kumar; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

   Sammanfattning : .... LÄS MER

3. 2. Reliability analysis of Load-Haul-Dump machines

   Författare :Uday Kumar; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

   Sammanfattning : Today, maintaining a mining equipment is an expensive affair. The two factors which influence significantly the occurrences of breakdowns are the operating reliability of equipment and the related human factors. LÄS MER

4. 3. Integration of Membrane Distillation and Solar Thermal Systems for Coproduction of Purified Water and Heat

   Författare :Tirumala Uday Kumar Nutakki; Andrew R. Martin; Guillermo Zaragoza; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar Membrane Distillation; polygeneration; TRNSYS; Integrated systems; Energy Technology; Energiteknik;

   Sammanfattning : In the Middle East and North Africa region fresh water resources are very scarce and theexisting sources are depleting rapidly. Desalination is the method to fulfill increasing waterdemand, and people depend mostly upon bottled water for drinking purposes. LÄS MER

5. 4. Two-Level Multi-Objective Genetic Algorithm for Risk-Based Life Cycle Cost Analysis

   Författare :Yamur K. Al-Douri; Uday Kumar; Jan Lundberg; Hussan Hamodi; Ahmed Al-Dubai; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Artificial intelligence AI ; Life cycle cost LCC ; Machine learning ML ; Multi-objective genetic algorithm MOGA ; Risk-based life cycle cost LCC ; Tunnel fans; Two-level system; Operation and Maintenance Engineering; Drift och underhållsteknik;

   Sammanfattning : Artificial intelligence (AI) is one of the fields in science and engineering and encompasses a wide variety of subfields, ranging from general areas (learning and perception) to specific topics, such as mathematical theorems. AI and, specifically, multi-objective genetic algorithms (MOGAs) for risk-based life cycle cost (LCC) analysis should be performed to estimate the optimal replacement time of tunnel fan systems, with a view towards reducing the ownership cost and the risk cost and increasing company profitability from an economic point of view. LÄS MER

7. 5. Cost Effective Maintenance for Competitve Advantages

   Författare :Imad Alsyouf; Basim Al-Najjar; Uday Kumar; Växjö universitet; []
   Nyckelord :Maintenance approaches; Maintenance Costs; Savings and Profit; Operations; Quality; Effectiveness; Efficiency; Competitiveness; Productivity; Value Advantages; Profitability; Performance; Balanced Scorecard BSC; Maintenance Selection Method; Fuzzy MCDM; TTT-plot; Cost Effective Maintenance; Mechanistic Model; Vibration Level Prediction; Condition-Based Maintenance; survey; case study; TECHNOLOGY; TEKNIKVETENSKAP; Maskinteknik; Mechanical Engineering;

   Sammanfattning : This thesis describes the role of cost effective maintenance in achieving competitive advantages. It explores by means of a survey which maintenance practices are used, and how maintenance policies are selected in Swedish industries. LÄS MER