کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
807958 1468256 2013 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantification of margins and uncertainties using multiple gates and conditional probabilities
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Quantification of margins and uncertainties using multiple gates and conditional probabilities
چکیده انگلیسی

A methodology to perform the Quantification of Margins and Uncertainties (QMU) is introduced to enable the assessment of the safety associated with the operating conditions of complex engineering devices consisting of multiple subcomponents or coupled multi-physics processes. One of the key components of the approach is the possibility of decomposing the system into subcomponents characterized by critical metrics—gates—that collectively describe the reliability of the whole system. In the present study we formalize the process of constructing conditional probabilities for system performance and illustrate it with two applications: the evaluation of the test-time in a shock-tube experimental facility and the assessment of the unstart limit in the combustion chamber of a supersonic propulsion engine. In both cases, multiple uncertainties are considered and the gates are used as a mechanism to reduce the complexity of the resulting stochastic problem.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 114, June 2013, Pages 99–113
نویسندگان
, , ,