کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1474558 | 991092 | 2012 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Exact implementation of subcritical crack growth into a Weibullian strength distribution under constant stress rate conditions
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The strength of brittle materials showing the phenomena of the so-called slow or subcritical crack growth (SCG) is derived analytically for constant stress rate conditions. The approach is based on a Paris-law type relationship (i.e. power law) which describes the growth rate of pre-existing cracks (i.e. crack-like flaws) in terms of the stress intensity factor. The tensile strength of a given specimen is defined as the tensile stress, when the stress intensity factor reaches the fracture toughness (Griffith-criterion). In this paper a closed-form solution of the apparent strength with respect to the inert strength, the stress rate, etc., is presented. Based on that expression the change of a Weibullian inert strength distribution will be derived analytically with respect to the stress rate. By using dimensionless parameters the minimum amount of independent variables has been extracted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 32, Issue 16, December 2012, Pages 4031-4040
Journal: Journal of the European Ceramic Society - Volume 32, Issue 16, December 2012, Pages 4031-4040
نویسندگان
Peter H. Supancic, Harald M. Schöpf,