کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
778580 1463830 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A probabilistic model to predict the formation and propagation of crack networks in thermal fatigue
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A probabilistic model to predict the formation and propagation of crack networks in thermal fatigue
چکیده انگلیسی

A probabilistic model is presented to predict the formation and propagation of crack networks in thermal fatigue. It is based on a random distribution of sites where cracks initiate and on the shielding phenomenon corresponding to the relaxed stress field created around cracks. Currently, the model considers only heterogeneous uniaxial stress loading even if thermal fatigue is multiaxial. However, the first simulations on a uniaxial mechanical loading representative of the stress gradient that appears in thermal fatigue shocks are in qualitative agreement with experimental results. The larger the stress amplitude, the denser the crack network and the smaller the crack sizes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 31, Issue 3, March 2009, Pages 565–574
نویسندگان
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