کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
804277 1467876 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deterministic and probabilistic creep–fatigue–oxidation crack growth modeling
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Deterministic and probabilistic creep–fatigue–oxidation crack growth modeling
چکیده انگلیسی


• A new superposition theory is proposed for creep-fatigue-oxidation crack growth modeling.
• Several deterministic crack growth modeling are proposed in this paper.
• Monte Carlo simulation approach is proposed to study the probabilistic creep-fatigue-oxidation crack growth.

Fatigue, creep, oxidation or their combinations have long been recognized as the principal mechanisms in many high-temperature failures in power plant components, turbine engines, and exhaust systems in vehicles. Depending on the specific materials and loading conditions and temperature, the role of each damage mechanism may change significantly, ranging from independent development to competing and combined creep–fatigue, fatigue–oxidation, and creep–fatigue–oxidation. In this paper a new linear superposition theory is proposed to model the cycle-dependent and time-dependent creep–fatigue–oxidation crack growth phenomena. The model can be reduced to creep–fatigue and fatigue–oxidation crack growth models previously developed by the authors as well as, under some assumptions, the current widely used linear superposition theory. The limits of the current superposition theory and the advantages of the new theory are clearly demonstrated with several worked examples. A general probabilistic analysis procedure is also proposed by introducing the uncertainties of parameters in fatigue, creep, and oxidation crack growth laws with the help of the Monte Carlo simulation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Probabilistic Engineering Mechanics - Volume 33, July 2013, Pages 126–134
نویسندگان
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