کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5015102 1463723 2017 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical and analytical investigation of overloads in biaxial fatigue cracks
ترجمه فارسی عنوان
بررسی نوری و تحلیلی بارهای بارندگی در دو طرف خستگی دو طرفه
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
Structural components are often subjected to complex multiaxial loading conditions. The study of fatigue cracks under such conditions is not easy from an experimental point of view and most works tend to focus more on the simpler but less realistic case of uni-axial loading. Consequently, there are many uncertainties related to the load sequence effect that is now well known and is not normally incorporated into the growth models. The current work presents a new methodology for evaluating overload effect in biaxial fatigue cracks. The methodology includes evaluation of mixed-mode (ΔKI and ΔKII) stress intensity factor and the Crack Opening Displacement for samples with and without overload cycle under biaxial loading. The methodology is tested under two different load levels and a range of crack lengths. All crack-tip information is obtained with a hybrid optical-analytical methodology. It combines experimental full-field digital image correlation data and Williams' elastic model describing the crack-tip field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 100, Part 2, July 2017, Pages 583-590
نویسندگان
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