کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5014187 1463062 2016 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental evaluation of the effect of overloads on fatigue crack growth by analysing crack tip displacement fields
ترجمه فارسی عنوان
ارزیابی تجربی اثر اضافه بار در رشد ترک خستگی با استفاده از تجزیه و تحلیل زمینه های جابجایی نوک تیز
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
In this work, the shielding effect on growing fatigue cracks under different overload levels is evaluated by estimating stress intensity factors from the analysis of crack tip displacement fields measured by digital image correlation (DIC). A novel model called CJP is implemented to characterise crack tip displacement fields. The retardation effect induced by overloads is quantified from the calculation of the crack opening load. Moreover, a compliance based method is employed to compare and validate those results obtained by DIC. Results show a good level of agreement, highlighting that CJP model is a powerful tool to evaluate fracture mechanics problems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 166, October 2016, Pages 82-96
نویسندگان
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