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  • An Energy-based Prognostic Framework to Predict Evolution of Damage

    A Publication, Prognostics CoE Publications - 2 years ago

    Shared By: Kai Goebel

    Real-time measurements of the structural performance are now possible through state-of-the-art structural health monitoring (SHM) techniques, and a large amount of response data can be ...

    meatball
  • Assisted design, implementation, and modification of procedure tracking and advisory systems

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    Automated procedure tracking systems have been of interest in the nuclear power industry due to the huge numbers of documented procedures required for the operation ...

    meatball
  • A Diagnosis System Using Object-Oriented Fault Tree Models

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    Spaceborne computing systems must provide reliable, continuous operation for extended periods. Due to weight, power, and volume constraints, these systems must manage resources very effectively. ...

    meatball
  • An integrated approach to system design, reliability, and diagnosis

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    The requirement for ultradependability of computer systems in future avionics and space applications necessitates a top-down, integrated systems ingeneering approach for design, implementation, testing, and ...

    meatball
  • Object-oriented fault tree models applied to system diagnosis

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    When a diagnosis system is used in a dynamic environment, such as the distributed computer system planned for use on Space Station Freedom, it must ...

    meatball
  • An integrated approach to system design, reliability, and diagnosis

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    Two tools for engineering analyses of highly reliable systems, one for quantitative reliability evaluation and the other for fault diagnosis, have been developed based on ...

    meatball
  • Automatic translation of digraph to fault-tree models

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    The author presents a technique for converting digraph models, including those models containing cycles, to a fault-tree format. A computer program which automatically performs this ...

    meatball
  • Digraph reliability model processing advances and applications

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    This paper describes a new algorithm, called SourceDoubls, which efficiently solves for singletons and doubletons of a digraph reliability model. Compared with previous methods, the ...

    meatball
  • Digraphs and fault trees: a tale of two combinatorial modeling methods

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    The authors illustrate the similarities and differences of digraph and AND-OR fault tree models and discuss their use together in light of the strengths of ...

    meatball
  • Program Finds Minimal Cut Sets

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    CUTSETS computer program identifies all minimal cut sets for given node. Software package contains subprograms that solve for minimal cut sets of fault trees and ...

    meatball
  • Advances in digraph model processing applied to automated monitoring and diagnosis

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    Reliability models contain a great deal of information about the modeled system that can be used for automated diagnosis of the system. Using such a ...

    meatball
  • Automated Telescope Monitoring and Diagnosis

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    This paper discusses automated telescope monitoring and diagnosis work currently being performed at NASA Ames Research Center in cooperation with AutoScope Corporation. Topics addressed include ...

    meatball
  • Multiple Fault Isolation in Redundant Systems

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    We consider the problem of sequencing tests to isolate multiple faults in redundant (fault-tolerant) systems with minimum expected testing cost (time). It can be shown ...

    meatball
  • Real-Time Surface Traffic Adviser

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    A real-time data management system which uses data generated at different rates by multiple heterogeneous incompatible data sources are presented. In one embodiment, the invention ...

    meatball
  • NASA/TM–2003-212270 System Modeling and Diagnostics for Liquefying-Fuel Hybrid Rockets

    A Publication, DAVID IVERSON's Collection - 2 years, 2 months ago

    Shared By: DAVID IVERSON

    A Hybrid Combustion Facility (HCF) was recently built at NASA Ames Research Center to study the combustion properties of a new fuel formulation that burns ...

    meatball