کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
806468 905339 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Maintainability analysis considering time-dependent and time-independent covariates
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Maintainability analysis considering time-dependent and time-independent covariates
چکیده انگلیسی

Traditional parametric methods for assessing maintainability most often only consider time to repair (TTR) as a single explanatory variable. However, to predict availability more precisely for high availability systems, a better model is needed to quantify the effect of operational environment on maintainability. The proportional repair model (PRM), which is developed based on proportional hazard model (PHM), may be used to analyze maintainability in the present of covariates. In the PRM, the effect of covariates is considered to be time independent. However this assumption may not be valid for some situations. The aim of this paper is to develop the Cox regression model and its extension in the presence of time-dependent covariates for determining maintainability. A simple case study is used to demonstrate how the model can be applied in a real case.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 96, Issue 1, January 2011, Pages 210–217
نویسندگان
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