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  • Evaluation of failure diagnosis in conceptual design of mechanical systems

    Creator:
    Ruff, David N.
    Abstract:
    A methodology for improving quality and reducing life cycle costs of mechanical systems is described. The principal concept is that a system can be designed, in the conceptual stages, to be easier to diagnose for failures. To perform this, functional decomposition and form to function mapping are utilized both as...
    Resource Type:
    Masters Thesis
    Full Text:
    Mechanical Engineering presented on July 9. 1992 . Title: Evaluation of Failure Diagnosis in Conceptual

  • A framework for assessing and improving the resilience of complex engineered systems during the early design process

    Creator:
    Mehrpouyan, Hoda
    Abstract:
    As modern systems continue to increase in size and complexity, they pose significant safety and risk management challenges. System engineers and much of the government research efforts are focused on understanding the attributes and characteristics that emerge from the interactions of components and subsystems. As a result, the objective of...
    Resource Type:
    Dissertation
    Full Text:
    1 Engineering Targets Application of Component Redundancy Resilient System Design Minimize the

  • Methodologies to improve reliability engineering in early design

    Creator:
    O'Halloran, Bryan M.
    Abstract:
    This thesis is the summation of two publications with the motivation to move reliability analysis earlier in the design process. Current analyses aim to improve reliability after components have been selected. Moving specific analyses earlier in the design process reduces the cost to the designer. These early design analyses provide...
    Resource Type:
    Masters Thesis
    Full Text:
    Master's of Science in Mechanical Engineering - Thesis

  • 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:
    ultimately decide the level of success in a given system. With existing engineering design methods, early

  • Risk-based design for multidisciplinary complex systems

    Creator:
    Farhangmehr, Farzaneh
    Abstract:
    The ultimate goal of large-scale design organizations are mainly to reduce costs and improve reliability and performance of systems while assessing how much risk (cost, schedule, scope) they can take and still remain competitive. To achieve this goal they need to develop tools to reach the most preferred design product...
    Resource Type:
    Masters Thesis
    Full Text:
    , Mission Design, Power, Program Management, Propulsion, Science, Structures, System Engineering

  • Enabling safety-informed design decision making through simulation, reasoning and analysis

    Creator:
    Jensen, David Charles
    Abstract:
    While many organizations claim to "put safety first," safety is rarely considered early in the design process when system-level architectural decisions are made. Instead, system design follows an abstraction-to-detail process to first meet functional and then performance requirements. Following this process, safety assurance occurs in the later stages of design...
    Resource Type:
    Dissertation
    Full Text:
    OF FIGURES Figure Page 1.1 Top-Down System Engineering approach represented as a “V” diagram (after

  • A multiagent approach to identifying innovation in design components

    Creator:
    Rebhuhn, Carrie M.
    Abstract:
    Innovation is a key element for a product to achieve market success, but identifying it within product or even defining the term is a difficult task. Identifying innovation has been approached in many different ways. Experts in design engineering may identify innovative designs based on an analysis of a product's...
    Resource Type:
    Masters Thesis
    Full Text:
    the process of design engineering as a multiagent system, and assigns agents to fulfill functional