Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 46 for “"Condition based maintenance"”.
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Shipboard Fault Detection Methods for Condition-based Maintenance
… behavior provide new opportunities in vibration-based monitoring. The acquisition of vibration measurements must overcome significant practical challenges for successful vibration analysis. This work demonstrates vibration analysis for shipboard fault detection. Custom instrumentation and …
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Small Wind Turbine Blade Sensor for Condition Based Maintenance
… are expensive to build, so they need proper maintenance to prolong service life. Since blades are the most important components in the wind turbine, this project prototyped a low cost sensing system to monitor blades' health. The sensor board uses Atmel microcontrollers to monitor the blade's …
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Integrated Workload Allocation and Condition-based Maintenance Threshold Optimisation
… all the activities involved in asset management, maintenance has been one of the major focus areas of academic research due to its potential in helping manufacturers to generate the most value from their assets. The emergence of condition-based maintenance (CBM) in which decisions are made based …
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Shipboard condition based maintenance and integrated power system initiatives
… recognize and indicate abnormal operating conditions and casualties and provide invaluable information for training operators, diagnosing problems and troubleshooting. This thesis will discuss how this frequency content of the aggregate measurement can be used to assess the health of …
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Knowledge-Based Architecture for Integrated Condition Based Maintenance of Engineering Systems
… from the traditional breakdown and scheduled maintenance to adopt concepts referred to as Condition Based Maintenance (CBM) and Prognostic Health Management (PHM). In addition to signal processing and subsequent diagnostic and prognostic algorithms these new technologies involve storage of …
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A study of 2-stroke marine diesel engine characteristic based on condition based maintenance
… sources of energy waste, identifying failure conditions in electrical and mechanical systems all contribute to helping improve the bottom line. The ability of a vessel to operate depends on the ability of the ship main propulsion produces optimum power and translated through the transmission …
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Development of a state prediction model to aid decision making in condition based maintenance
Condition monitoring and fault diagnosis for operational equipment are developing andshowing their potential for enhancing the effectiveness and efficiency of maintenancemanagement, including maintenance decision-making. In this thesis, our aim is tomodel the condition of equipment items subject to …
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Condition-based maintenance applied to rail freight car components : the case of rail car trucks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Evaluation of non-intrusive monitoring for condition based maintenance applications on US Navy propulsion plants
… use of the Non-intrusive Load Monitor (NILM) in Condition Based Maintenance (CBM) applications on US Navy ships as part of the Office of Naval Research Electric Ship Integration (ESI) Initiative. The NILM is a device that measures an electrical component's performance by applying a single voltage …
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Vibration Analysis Processes In Noisy Environments For thePurposes of Condition Based Maintenance and theSignificance of Regime Recognition
… for the purpose of improving the Army's Condition Based Maintenance (CBM) program, a program established to monitor aircraft components via accelerometers in order to detect and diagnose failures. Since then, USC has constructed three test stands and operated a testing facility in order …
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Prognostic Algorithms for Condition Monitoring and Remaining Useful Life Estimation
To enable the bene�ts of a truly condition-based maintenance philosophy to be realised, robust, accurate and reliable algorithms, which provide maintenance personnel with the necessary information to make informed maintenance decisions, will be key. This thesis focuses on the development of such …
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Autonomous control and membrane maintenance optimization of photovoltaic reverse osmosis systems
… due to fouling, using a self-optimizing condition based maintenance algorithm. Additionally, by exploiting the energy compliance of PVRO elements and actively controlling the individual components of the system, water production can be maximized. The compliance in a PVRO system has been …
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Adult Postoperative Open-Heart Patients: Anemia and 30-Day Hospital Readmission
… an operational definition of the term <em>condition-based maintenance</em> as applied to health care and discuss the applicability and effectiveness of condition-based maintenance within health care.</li> <li>Aim 2. To identify the number of adult patients undergoing elective open-heart …
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Electromagnetic energy harvester and self-powered embedded system
… accommodation of fine sensing and control for condition-based maintenance ever more feasible. Finer granularity in sensing and control, which is the future of energy efficiency, alone is an immense benefit as it can reduce time and cost associated with a potential repair. Combined with …
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Maintenance strategies affecting equipment performance
Proper maintenance of plant items is crucial for the safe and profitable operation of process plants, The relevant maintenance policies fall into the following four categories: (i) preventivejopportunistic/breakdown replacement policies, (ii) inspection/inspection-repair-replacernent policies, …
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The NILM Dashboard : watchstanding and real-time fault detection using Non-intrusive Load Monitoring
… Cutters to act as an automatic watchstander and condition-based maintenance aid. The effectiveness of the system is demonstrated on power data collected from electrical panels in the ship's engine room. Case studies are used to evaluate the Dashboard's ability to detect fault conditions in …
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Condition based monitoring and protection in electrical distribution systems
… only energy score-keeping, but also assist with condition-based maintenance. They may potentially serve as part of the utility protection gear. And they may be called upon to operate in new environments, e.g., non-radial distribution systems as might be found on microgrids or warships. This …
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Interpreting human activity from electrical consumption data through non-intrusive load monitoring
… where their kWh's are going. Second, it is a maintenance tool. Signs of wear are detectable through their electrical signal. Third, it provides awareness of human activity within a network. Each device has an electrical fingerprint, and specific devices imply associated human actions. From …
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Condition monitoring of induction motors in the nuclear power station environment
… and methods of detecting these faults. The Condition Based Maintenance framework was introduced in which condition monitoring of induction machines is an essential component. The main condition monitoring methods were explained with the main focus being on Motor Current Signature Analysis …
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Studies of Monitoring and Diagnosis Systems for Substation Apparatus
… Traditionally, most utilities perform regular maintenance in order to prevent equipment breakdown. Condition-based maintenance strategy monitors the condition of the equipment by measuring and analyzing key parameters and recommends optimum maintenance actions. Equipment such as transformers …
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