Library

Flaw-Detected Coating Sensors Applied in Aircraft R&M

by Hu, Feng; Liu, Mabao; Gao, Hong; Lu, Zhigang

The accumulation of fatigue damage in critical structural members of the aging aircrafts is an increasingly complex and continuing high priority problem...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Strength-Load, Product Reliability, Engineering

Detecting Failure Precursors in BGA Solder Joints

by Jaai, Rubyca; Pecht, Michael G.; Cook, Jason L.

The case study illustrates the use of Multivariate State Estimation Technique (MSET) and Sequential Probability Ratio Test (SPRT) to detect the onset of failure in Ball Grid Arrays (BGA) subjected to Accelerated Temperature Cycling (ATC) tests...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Accelerated Life Testing, Strength-Load

Research on Obtaining Dynamic, Robust Fault Diagnosis Rules

by Feng, Chang; Zhoa, Tingdi; Zhoa, Nuo; Yin, Shu-yue

This paper is about fault diagnosis rules..

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Engineering, Reliability Prediction

Optimal Maintenance of a Multi-Unit System under Dependencies

by Sung, Bill; Schrage, Daniel P.

A proposal for an alternative methodology to solve optimal maintenance problems is presented in this paper...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Reliability and Availability Assessment, Maintainability, R&M Modeling and Optimization

Hierarchical Decomposition for Optimal Reliability Allocation

by Zhang, Xialing; Huang, Hong-Zhong; Liu, Yu

A hierarchical structure for optimal reliability allocation based on target cascading is proposed in this paper. An example is given to illustrative the method...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Reliability Analysis/Allocation/Prediction/Estimation

A Method for Parameter Estimation of Mixed Weibull Distribution

by Ling, Dan; Huang, Hong-Zhong; Liu, Yu

In this paper, a mixed model involving two Weibull distributions is considered...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Weibull Analysis, Statistics

Concept for the NASA Risk and Reliability Data Collection and Analysis Environment

by Groen, Frank J.; Smith, Curtin Lee

This paper describes the concept of a data collection and analysis environment that is being developed to support the collection, analysis, and distribution of R&M data...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Probabilistic Risk Assessment, Bayesian Analysis, Data Analysis

Reliability Practice at NASA Goddard Space Flight Center

by Li, Ming; Pruessner, Paula S.; Groen, Frank J.

This paper describes in brief the Reliability and Maintainability (R&M) Programs performed directly by the reliability branch at Goddard Space Flight Center (GSFC). The mission assurance requirements..

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Reliability Management, Safety and Risk Management, Quality Management

Reliability Analysis of Multi-State Phased-Mission Systems

by Shrestha, Akhilesh; Xing, Liudong; Dai, Yuanshun

In this paper, we propose a hierarchical modeling approach that integrates an efficient multi-valued decision diagram model for representing the system structure function at the upper level and Markov models for describing components’behaviors.....

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Markov, Reliability Analysis

Impact of Proof Test Effectiveness on Safety Instrumented System Performance

by Bukowski, Julie V.; van Beurden, Iwan

This paper addresses the effectiveness of proof tests that are performed on safety instrumented functions (SIF) to reveal any failures undetected by automatic diagnostics...

  • Filetype: pdf
  • Publish date: 2009-02
  • Keywords:RAMS 2009 Proceedings,Demonstration Tests, Reliability Model, Degradation

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