Proceedings ArticleDOI
A Generic Bayesian Approach to Real-Time Structural Health Prognostics
Byeng D. Youn,Pingfeng Wang +1 more
TLDR
In this article, a decision-centered lifetime and reliability prognostics using a generic Bayesian framework is presented, which eliminates dependency of evolutionary updating process on a selection of distribution types for the parameters of a sensory degradation model.Abstract:
This paper presents a decision-centered lifetime and reliability prognostics using a generic Bayesian framework. This generic Bayesian framework models and updates sensory degradation data, remaining life, and reliability using non-conjugate Bayesian updating mechanism. Thus, it continuously updates lifetime distributions of degraded system in realtime. Furthermore, the generic Bayesian framework eliminates dependency of evolutionary updating process on a selection of distribution types for the parameters of a sensory degradation model. The Markov Chain Monte Carlo (MCMC) technique is employed as a numerical method of non-conjugate Bayesian updating framework. While accounting for variability in loading conditions, material properties, and manufacturing tolerances over the population of system samples, different reliabilities will be identified for different samples. So, reliability distribution for an engineering system can be obtained and updated in a Bayesian format. The proposed Bayesian methodology is generally applicable for different degradation models and prior distribution types. The proposed methodology is successfully demonstrated with 26 resistors for the lifetime and reliability prognostics.read more
Citations
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Selecting probabilistic approaches for reliability-based design optimization
Byeng D. Youn,Kyung K. Choi +1 more
TL;DR: In this article, a guide for selecting an appropriate method in RBDO is provided by comparing probabilistic design approaches from the perspective of various numerical considerations, and it has been found in the literature that PMA is more efficient and stable than RIA in terms of numerical accuracy, simplicity, and stability.
Journal ArticleDOI
A generic probabilistic framework for structural health prognostics and uncertainty management
TL;DR: The proposed generic framework of structural health prognostics is applicable to different engineered systems and its effectiveness is demonstrated with two cases studies.
Journal ArticleDOI
A survey of the state of condition-based maintenance (CBM) in the nuclear power industry
R.M. Ayo-Imoru,A.C. Cilliers +1 more
TL;DR: In this paper, the authors present a survey on the state of condition-based maintenance in the nuclear industry, which is achieved by systematically looking at the major phases of CBM, which are monitoring, diagnostics and prognostics.
Proceedings ArticleDOI
A Generic Bayesian Framework for Real-Time Prognostics and Health Management (PHM)
Pingfeng Wang,Byeng D. Youn +1 more
TL;DR: A generic data-driven prognostics framework using the Relevance Vector Machine (RVM) and the Similarity-Based Interpolation (SBI) for the online prediction process is presented, applicable to different engineering applications.
References
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Book
Statistical Methods for Reliability Data
TL;DR: In this paper, the use of Bayesian methods for reliability data is discussed and a detailed discussion of the application of these methods in the context of automated life test planning is presented.
Book
An Introduction to Reliability and Maintainability Engineering
TL;DR: In this paper, the authors present a basic reliability model for failure distribution and a constant failure rate model for time-dependent failure models, as well as a design for maintainability.
Journal ArticleDOI
Using Degradation Measures to Estimate a Time-to-Failure Distribution
C. Joseph Lu,William O. Meeker +1 more
TL;DR: In this article, the authors developed statistical methods for using degradation measures to estimate a time-to-failure distribution for a broad class of degradation models, using a nonlinear mixed-effects model and developing methods based on Monte Carlo simulation to obtain point estimates and confidence intervals for reliability assessment.
Journal ArticleDOI
Applications of maintenance optimization models : a review and analysis
TL;DR: An overview of applications of maintenance optimization models published so far and the role of these models in maintenance is analyzed and the factors which may have hampered applications are discussed.
Book
Mechanical Behavior of Materials
TL;DR: In this article, a course focused on the experimental study of mechanical behavior of engineering materials is presented, where the theoretical background and techniques used for testing are extensively discussed in class, alongside the lab sessions.
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