کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1445856 988591 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A plasticity-corrected stress intensity factor for fatigue crack growth in ductile materials
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
A plasticity-corrected stress intensity factor for fatigue crack growth in ductile materials
چکیده انگلیسی

In this paper, a plasticity-corrected stress intensity factor range ΔKpc is developed on the basis of plastic zone toughening theory. Using this new mechanical driving force parameter for fatigue crack growth (FCG), a theoretical correlation of Paris’s law with the crack tip plastic zone is established. Thus, some of the important phenomena associated with the plastic zone around the fatigue crack tip, such as the effects of load ratio R, overload and T stress on the FCG behavior, can be incorporated into the classical Paris’s law. Comparisons with the experimental data demonstrate that ΔKpc as a single and effective mechanical parameter is capable of describing the effects of the load ratio, T stress and overload on the FCG rate. The FCG rate described as a function of ΔKpc tested under a simple loading condition can also be used for other complex loading conditions of the same material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 61, Issue 16, September 2013, Pages 5988–5995
نویسندگان
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