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 13 of 13 for “"mean time to failure"”.
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Electrothermal Simulation and Temperature-Sensitive Reliability Diagnosis for CMOS VLSI Circuits
ILLIADS-T has been successfully applied to the electromigration (EM) reliability diagnosis and timing analysis. By considering both transistor and interconnect temperatures, the temperature-sensitive EM-induced mean time-to-failure and critical path timing are estimated and discussed.
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Design and development of an automated pinning machine for the surface mount electronics industry
… a pinning process and the associated machinery to handle odd-form pins specific to a company in the surface mount electronics industry. The developed pinning machine will reduce manual labor requirements, increase flexibility over current automated systems, and allow for greater part …
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Mitigation of failures in high performance computing via runtime techniques
… machines increase in scale, it is predicted that failure rates of supercomputers will correspondingly increase. Even though the mean time to failure (MTTF) of individual component is high, the large number of components significantly decreases the system MTTF. Meanwhile, the decreasing size of …
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The design of periodically self restoring redundant systems
Most existing fault tolerant systems employ some form of dynamic redundancy and can be considered to be incident driven. Their recovery mechanisms are triggered by the detection of a fault. This dissertation investigates an alternative approach to fault tolerant design where the redundant system …
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Snap-through of a shallow arch subjected to random excitation
The motion of a shallow arch subjected to random loading is investigated. It is expected that the arch will vibrate about its initial stable configuration under low intensity loading, but will snap back and forth about its horizontal axis under high intensity loading. The parameter of interest is …
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Preventive maintenance scheduling based on failure data in a medical device manufacturing facility
… preventive maintenance (PM) schedule. Pareto Rule was utilized to filter out the defect-types that are causing 80% of the defect occurrences. Defect density was introduced, i.e. the ratio between total number of defects occurred per cavity position to the total types of defects occurring on …
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Stochastic availability analysis and modeling of longwall mining operations
The objective of this research is to develop analytical approaches for assessment and prediction of the availability of longwall mining systems. After a functional analysis of longwall mining operations, the longwall production system is divided into four subsystems: coal—cutting, face—conveying, …
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A systems thinking approach to business intelligence solutions based on cloud computing
Business intelligence is the set of tools, processes, practices and people that are used to take advantage of information to support decision making in the organizations. Cloud computing is a new paradigm for offering computing resources that work on demand, are scalable and are charged by the time …
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Metastable legged-robot locomotion
A variety of impressive approaches to legged locomotion exist; however, the science of legged robotics is still far from demonstrating a solution which performs with a level of flexibility, reliability and careful foot placement that would enable practical locomotion on the variety of rough and …
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Design and Analysis of Adaptive Fault Tolerant QoS Control Algorithms for Query Processing in Wireless Sensor Networks
… QoS requirements in terms of reliability and timeliness, and expect a correct response to be returned within the deadline. Satisfying these QoS requirements requires that fault tolerance mechanisms through redundancy be used, which may cause the energy of the system to deplete quickly. This …
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Modelling of the reliability of flip chip lead-free solder joints at high-temperature excursions
… (SnAgCu) alloy solder joints used to assemble the component of the devices are functioning at homologous temperature above 0.8. In such ambient temperatures, solder alloys have limited mechanical strength and will be sensitive to strain rate. The sensitivity of solder properties to …
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EFFICIENT AGEING-AWARE TECHNIQUES FOR EMERGING LOW POWER MULTI-CORE SYSTEMS
The rise in power consumption due to the integration of more resources into a single chip poses a significant threat to performance and resource lifespan in the field of technology. As a result of this, only a fraction of the integrated resources can be powered on at any given time, hindering the …
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Tecniche di progettazione tollerante alle variazioni per circuiti digitali in tecnologie nanometriche
… on the continuous reduction of the transistors size, to reduce area, power, cost and increase the computational performance of integrated circuits. This trend, known as technology scaling, is approaching the nanometer size. The lithographic process in the manufacturing stage is increasing …