Browsing Electronic Theses and Dissertations by Department "Civil Engineering"
Now showing items 81-100 of 101
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(2004-12-01)Department: Civil EngineeringThis study focuses on computationally efficient techniques for reliability-based design optimization (RBDO), and develops extensions that are useful in robust design. Various RBDO techniques can be grouped into nested, ...
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(2006-03-21)Department: Civil EngineeringThis study proposes a general methodology for mechanical/structural fatigue reliability analysis under multiaxial loading. A new characteristic plane approach is proposed to predict the fatigue crack initiation and propagation ...
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(2005-07-28)Department: Civil EngineeringStructural control through bracing modification is presented in this thesis. First existing structural control devices discussed. Then the idea of how to adjust the stiffness properties of a structural frame is introduced. ...
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(2007-07-18)Department: Civil EngineeringThe major findings of this thesis are that free surfaces have enabled nanowires to show many unusual behavior and mechanical properties at nanoscale, including shape memory and pseudoelastic behavior, surface elasticity ...
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(2022-11-18)Department: Civil EngineeringIntelligent Transportation Systems (ITS) have become increasingly important over time demonstrating a need for smarter algorithms to be deployed in Integrated Corridor Management (ICM). Two Active Traffic Management (ATM) ...
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(2013-08-12)Department: Civil EngineeringThis dissertation develops a methodology that provides information to make optimal decisions with respect to the mission and maintenance of a system. A great amount of information is needed about a system to make such ...
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(2012-03-31)Department: Civil EngineeringTesting or performing inspections to gain information and reduce uncertainty is a necessary activity during the life-cycle of any engineering system. This study develops analytical methods for the optimization of test and ...
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(2010-12-07)Department: Civil EngineeringComposites and adhesive joints are being increasingly used in modern structures. It becomes very important to characterize the failure in such materials especially at the interface between constituents. This dissertation ...
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(2004-07-29)Department: Civil EngineeringIn this study, activity allocation is analyzed in two stages, by modeling the activity data of household individuals. In the first stage, activity participation patterns of individuals are examined for both out-of-home ...
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(2012-04-10)Department: Civil EngineeringThe research described herein was performed in an effort to determine how federal transportation expenditures benefit the freight industry. This study focused on two objectives: 1) determining relevant federal investments ...
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(2017-09-08)Department: Civil EngineeringProbabilistic performance assessment evaluates a system’s capability to accomplish the required functions under uncertainty. The results of probabilistic performance assessment can be used to support decision making such ...
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(2017-07-31)Department: Civil EngineeringMultidisciplinary simulations are often assembled based on limited data and approximate individual and partial-physics model components. Methodologies are proposed to address the following three challenges in the context ...
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Uncertainty Quantification and Decision Making in Hierarchical Development of Computational Models (2009-07-27)Department: Civil EngineeringAs engineering systems grow in size and complexity, it is becoming increasingly difficult to assess their performance through full scale testing. Modeling and simulation fill the gap left by the lack of full scale testing ...
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(2012-02-16)Department: Civil EngineeringA comprehensive framework for the treatment of uncertainty is essential to facilitate decision-making in engineering systems at every stage of the life cycle, such as design, manufacturing/construction, operations, system ...
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(2020-01-14)Department: Civil EngineeringAdditive manufacturing (AM) has shown immense potential in several industries. However, significant variability in the product quality currently hinders widespread use of AM. The focus of this dissertation is on uncertainty ...
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(2021-01-13)Department: Civil EngineeringThis dissertation is concerned with understanding the uncertainty and variability in the failure and nonlinear response of materials with heterogeneous microstructures at fine scales (i.e., micrometers to millimeters). In ...
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(2010-08-11)Department: Civil EngineeringFatigue crack growth is a stochastic process and different kinds of uncertainty – physical variability, data uncertainty and modeling errors – should be included within the analysis to more accurately represent the fatigue ...
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(2013-09-19)Department: Civil EngineeringThe prediction of failure probability for engineering components/devices under service conditions often involves the use of predictive models and measurement data. The fact that no model is absolutely correct indicates the ...
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(2017-06-29)Department: Civil EngineeringThis dissertation presents the formulation and implementation of the variational multiscale enrichment computational framework for scale inseparable multiscale modeling of structures subjected to extreme environments. In ...
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(2022-11-17)Department: Civil EngineeringComputational models and physical measurements are vital assets in understanding and optimizing the design and operation of engineered systems. However, the credibility of both models and experiments is challenged by ...