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  • A hazardous-inspection model with costly repair

    Creator:
    Yang, Minghui
    Abstract:
    An inspection-repair model is developed that presumes inspection is hazardous to the system being inspected. The form of the optimal inspection-repair policy is determined for different ranges of the model's parameters. The model is formulated as a partially observable Markov decision process with finite numbers of states and actions. The...
    Resource Type:
    Dissertation
    Full Text:
    A hazardous-inspection model with costly repair AN

  • Reliability centered prediction technique for diagnostic modeling and improvement

    Creator:
    Murphy, Michael D., 1965-
    Abstract:
    Design phase decisions based on diagnosability lead to lower system costs and, in turn, higher quality products by means of reducing maintenance time and increasing system reliability. A case for diagnosability is presented. Functions of diagnosability are expounded upon including life cycle costs, statistical analysis, and design criterion to emphasize...
    Resource Type:
    Masters Thesis
    Full Text:
    knowledge and experience. Regardless of the specific parameter, if the mathematical model of a statistical

  • The plume model for large utility scale atmospheric fluidized bed combustors

    Creator:
    Park, Dalkeun
    Abstract:
    The atmospheric fluidized bed combustor (AFBC) is an alternative to the pulverized coal burner. The size of a utility scale AFBC would be enormous so that the use of large particles is necessary to reduce its size. In modeling the combustion of coal and capture of sulfur released from the...
    Resource Type:
    Dissertation
    Full Text:
    The plume model for large utility scale atmospheric

  • A framework to model reliability and failures in complex systems during the early engineering design process

    Creator:
    O'Halloran, Bryan M.
    Abstract:
    An open area of research in complex systems is to move reliability and failure assessments earlier in the engineering design process. When compared to later design, early decisions are cost effective and have a large impact on the system. Standard methods are limited by the availability of data and often...
    Resource Type:
    Dissertation
    Full Text:
    Mechanical Engineering presented on May 3, 2013. Title: A FRAMEWORK TO MODEL RELIABILITY AND FAILURES IN

  • Critical evaluation of Ouyang's model reduction method

    Creator:
    Jia, Zuxin
    Abstract:
    A model reduction method for stable, linear, time-invariant, continuous systems is critically studied. This method, proposed by Prof. Ouyang, is based on the concept of power dispersion and the least-squared estimation technique. The reduced models obtained by this method retain the stability of the stable, high order original systems and...
    Resource Type:
    Masters Thesis
    Full Text:
    Engineering presented on June 9, 1989. Title: Critical Evaluation of Ouyang's Model Reduction Method

  • Wave interaction with rubble mound structures

    Creator:
    Yoo, Chul-hee
    Abstract:
    The objective of this study is the development and verification of an analytical solution for an unsteady flow field partially occupied by a permeable structure. Flow is induced by a small amplitude incident wave train and the permeable structure may contain multilayered anisotropic but homogeneous material. The analytical solution developed...
    Resource Type:
    Masters Thesis
    Full Text:
    application of simplified mathematical models. In 1985, Kobayashi and Jacobs developed a mathematical model

  • Decentralized control of a cable-stayed beam structure

    Creator:
    Volz, Patrick U.
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Science in Electrical and Computer Engineering presented on May 5, 1995. Title: Decentralized

  • Identification of structural parameters and hydrodynamic effects for forced and free vibration

    Creator:
    Kruchoski, Brian L. (Brian Louis)
    Abstract:
    Statistically-based estimation techniques are presented in this study. These techniques incorporate structural test data to improve finite element models used for dynamic analysis. Methods are developed to identify optimum values of the parameters of finite element models describing structures. The parameters which may be identified are : element area, mass...
    Resource Type:
    Dissertation
    Full Text:
    mathematical model of the structure is generated and is solved by computer to predict the response to a

  • Optimization and control of cable deployment systems

    Creator:
    Mtira, Mohamed
    Abstract:
    An optimization methodology, algorithms, and computer program for cable/lumped-body deployment system are developed for the design and installation of sonar packages in deep ocean ranges. In addition, a methodology and algorithms for the control of the system are proposed. A penalty function is developed in terms of the system parameters...
    Resource Type:
    Masters Thesis
    Full Text:
    Environment 17 3.2 Mathematical Model 17 3.2.1 State Variables 17 3.2.2 System Parameters 18 3.2.3

  • Ultimate and serviceability limit state reliability-based axial capacity of deep foundations

    Creator:
    Reddy, Seth C.
    Abstract:
    Deep foundations are necessary for the construction of many structures, such as bridges and buildings, located in areas unsuitable for shallow foundations. Owing to the inherent variability of soil and the complex changes that occur in the soil adjacent to deep foundations as they are installed, the ability to accurately...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Seth C. Reddy for the degree of Doctor of Philosophy in Civil Engineering presented on