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Showing 1 to 16 of 16 for “"system reliability analysis"”.
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Efficient time-dependent system reliability analysis
"Engineering systems are usually subjected to time-variant loads and operate under time-dependent uncertainty; system performances are therefore time-dependent. Accurate and efficient estimate of system reliability is crucial for decision makings on system design, lifetime cost estimate, …
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Power System Reliability Analysis with Distributed Generators
Reliability is a key aspect of power system design and planning. In this research we present a reliability analysis algorithm for large scale, radially operated (with respect to substation), reconfigurable, electrical distribution systems. The algorithm takes into account equipment power handling …
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System Reliability Analysis of Defected Pile group Foundations
… group foundation, utilizing a rational based system reliability analysis. This was achieved by conducting a comprehensive numerical parametric investigation using the computer program ABAQUS/Standard. The result of the parametric study showed that the presence of a defected pile in a pile …
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Improved methods for fast system reliability analysis through machine-learning-based surrogate models
… problem, a special case of the k-terminal reliability problem. Both problems are known to be computationally intractable for general infrastructure graphs as the network size grows large, which motivates the use of Monte Carlo techniques to estimate the failure probability. However, Monte …
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Finite-element-based system reliability analysis and updating of fatigue-induced sequential failures
… of structural failure. In fact, many structural systems such as bridges, offshore platforms, and aircraft are subjected to the risk of fatigue-induced failure caused by repeated loading over their life cycle. Therefore, structural systems should be designed and maintained such that they have an …
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Development and application of new system reliability analysis methods for complex infrastructure systems
… Despite significant advances in theories on reliability analysis of individual components and their adoption in practice, the critical knowledge and quantitative methods for reliability assessments of complex system events remain elusive, leading to unknown accuracies in the risk assessment. …
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System reliability analysis methods for rapid multi-scale network risk assessment and decision making
… responses, it is essential to evaluate the reliability of infrastructure networks accurately and efficiently and if needed, to make a reasonable decision under a budgetary constraint on retrofitting prioritization of vulnerable components. In general, however, network analysis is highly …
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System reliability analysis of structures subjected to fatigue induced sequential failures using evolutionary algorithms
… was followed by other bridge failures leading to system collapse. With proper system reliability analysis, such cascading failures could be foreseen by stakeholders. To help make better risk-informed decisions, system reliability methods have been developed to analyze general structures subjected …
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RELIABILITY-BASED MODELING FOR MISSOURI RIVER DAM SYSTEM
… types shift from traditional causes (such as system nature of incidents) to operational risk. These failures occur because of unforeseen combinations of usual conditions. Since the operational components have complex internal and external interactions, we take them into an integrated system. …
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Incorporating substation and switching station related outages in composite system reliability evaluation
… station related outages in composite or bulk system reliability analysis. Station related failures can cause multiple component outages that can propagate to other parts of the network resulting in severe damages. In order to minimize the effects of station related outages on the composite …
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Reliability analysis for systems with outsourced components
… for many industrial firms is to function as system integrators, depending on numerous outsourced components from outside component suppliers. This practice has resulted in tremendous cost savings; it makes system reliability analysis, however, more challenging due to the limited component …
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System Reliability-Based Design and Multiresolution Topology Optimization
… techniques to large-scale structural systems with uncertainties. The specific goals of this dissertation are: (1) to develop an efficient scheme for topology optimization; (2) to introduce an efficient and accurate system reliability-based design optimization (SRBDO) procedure; and (3) …
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Advanced methods for prediction of animal-related outages in overhead distribution systems
Occurrence of outages in overhead distribution systems is a significant factor in determining distribution system reliability. Analysis of animal-related outages has practical value since animals cause a large number of outages in overhead distribution systems. This dissertation presents several …
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Localization and Mapping for Autonomous Driving: Fault Detection and Reliability Analysis
… navigation, with which intelligent vehicle/robot systems could successfully make reliable decisions for the driving path or react to the sudden events occurring within the path. A map with rich environment information is essential to support autonomous driving system to meet these high …
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Societal risk and resilience analysis: A multi-scale approach to model the dynamics of infrastructure-social systems
… should be informed by a comprehensive risk analysis. To do so, there is a need for 1) a theoretical framework that enables conceptualizing the connections among diverse consequences and distinguishing which ones are important and relevant to risk mitigation; 2) mathematical tools to …
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Utilizing A Real Life Data Warehouse To Develop Freeway Travel Time Eliability Stochastic Models
… of these networks. Transportation network reliability measure plays an important role in judging the performance of the transportation system and in evaluating the impact of new Intelligent Transportation Systems (ITS) deployment. The measurement of transportation network travel time …