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On some characteristics of quality for systems operating in a random environment

Title
On some characteristics of quality for systems operating in a random environment
Authors
Cha J.H.Finkelstein M.
Ewha Authors
차지환
SCOPUS Author ID
차지환scopus
Issue Date
2019
Journal Title
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
ISSN
1748-006XJCR Link
Citation
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability vol. 233, no. 2, pp. 257 - 267
Keywords
expected qualityfailure rate processQuality characteristicrandom environmentshock process
Publisher
SAGE Publications Ltd
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
We consider systems that are operating in a random environment modeled by an external shock process. Performance of a system is characterized by a quality (output) function that is decreasing (due to degradation) in the absence of shocks. The important feature of our model is that shocks affect the failure rate of a system directly, and at the same time, each shock contributes to the additional decrease in the quality function forming the corresponding stochastic process. Expectations (unconditional and conditional on survival) and variability of this process are analyzed. Some monotonicity properties of the conditional quality function are discussed and expressions for the future values of this function are derived. © IMechE 2018.
DOI
10.1177/1748006X18775901
Appears in Collections:
자연과학대학 > 통계학전공 > Journal papers
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