Browsing Electronic Theses and Dissertations by Department "Civil Engineering"
Now showing items 61-80 of 101
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(2021-11-18)Department: Civil EngineeringAdditive manufacturing has grown in popularity due to its advantages over more traditional forms of manufacturing. However, it remains unreliable for mainstream manufacturing due to its high prevalence of flaws. Quality ...
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(2009-07-21)Department: Civil EngineeringDecision makers often confront an inability to understand the consequences of interactions within systems of systems (SoS), which can have physical and human components and exhibit hybrid (continuous and discrete) dynamics. ...
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(2014-11-24)Department: Civil EngineeringAs water pipelines reach the end of their useful lives, asset managers must develop replacement and maintenance programs that mitigate the risk of pipeline failure. A risk-based asset management program must include ...
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(2022-03-25)Department: Civil EngineeringThe purpose of uncertainty quantification in the system response prediction is to support decision-making under uncertainty. For complex engineering systems, recent efforts have focused on using computational models for ...
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(2023-11-16)Department: Civil EngineeringThis dissertation investigates the uncertainty quantification of prediction in high-dimensional problems. A systematic approach including adaptive surrogate modeling, discrepancy modeling and uncertainty propagation for ...
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(2007-04-13)Department: Civil EngineeringModern aerospace systems are increasingly complex and multidisciplinary, and are required to achieve dramatic improvements in performance, cost effectiveness, and reliability. For this reason, program requirements must ...
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(2010-08-02)Department: Civil EngineeringA probabilistic framework is developed in this dissertation for numerical simulation of the degradation of cementitious materials under external sulfate attack. The model combines detailed approaches for four essential ...
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(2023-07-12)Department: Civil EngineeringBed load sediment transport often occurs under rarefied conditions in which particle fluxes have decided uncertainties; as such, probabilistic descriptions that acknowledge a range of outcomes are better suited than ...
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(2021-11-17)Department: Civil EngineeringComputational simulations are used to predict the behavior of complex engineering systems where experimental data may be unavailable. A computational simulation is an imperfect representation of reality, though, with model ...
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(2007-04-14)Department: Civil EngineeringThe overall objective of this study is to advance highway bridge inspection procedures from current subjective methods to a more quantitative, objective framework for assessment and inspection within a management program. ...
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(2023-09-20)Department: Civil EngineeringUnderstanding complex traffic dynamics, characterized by the interplay between vehicle automation technologies, human drivers, and diverse transportation modes, presents significant challenges for transportation research. ...
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(2015-03-20)Department: Civil EngineeringThis dissertation presents a reduced order multiscale computational model for simulating failure and damage propagation in brittle composite materials. The model builds on the eigendeformation-based reduced order homogenization ...
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(2017-09-12)Department: Civil EngineeringThis dissertation is devoted to the development of multiscale modeling strategies for polycrystalline materials at both micro- and structural scales. At the microscale, a dislocation glide based crystal plasticity finite ...
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(2007-07-30)Department: Civil EngineeringThis dissertation proposes a methodology for optimizing inspection schedules of large heterogeneous populations, by combining clustering analysis, reliability analysis, and nonlinear optimization techniques. Due to ...
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(2014-09-05)Department: Civil EngineeringThis dissertation explores resource allocation methods for quantification and reduction of prediction uncertainty from computational models, in order to enable risk assessment and decision-making in engineering systems. ...
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(2023-07-18)Department: Civil EngineeringModern power grids are in a time of significant change. Legacy generators, such as coal and nuclear generators, are retiring. New technologies, such as wind generators, solar generators, and distributed energy resources, ...
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(2021-03-23)Department: Civil EngineeringModeling and simulating brittle and quasi-brittle fracture mechanisms is important to characterizing the failure behavior of laminated composite materials and understanding iceberg calving from Antarctic glaciers and ice ...
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(2022-06-29)Department: Civil EngineeringTransportation-related fatalities and serious injuries are societal problems that requires active risk mitigation. With the latest information technology and data analytics, opportunities arise to make evidence-based safety ...
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(2016-11-18)Department: Civil EngineeringA system of interest usually consists of some unknown model parameters that affect its output. System diagnosis estimates these model parameters and track their evolution if the system is time-dependent. Subsequently, the ...
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(2007-04-07)Department: Civil EngineeringA methodology for the optimum design under uncertainty of sensor arrays for structural health monitoring systems is developed. Stochastic finite element analysis, damage detection algorithms, and nonlinear optimization are ...