کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
767913 897243 2009 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of void damage induced by warm prestressing (WPS) on cleavage fracture of notched steel specimens
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Effects of void damage induced by warm prestressing (WPS) on cleavage fracture of notched steel specimens
چکیده انگلیسی
The effects of void damage induced by warm prestressing (WPS) on cleavage fracture of notched steel specimens were studied by experiments and FEM calculations. The results show that the local stress concentration around the voids promotes the cleavage initiation and decreases the notch toughness and cleavage fracture stress. The fibrous cracks ahead of notch tips caused by the ductile tearing in the WPS obviously raise the normal stress in front of their tips and decrease fracture load and notch toughness. When the beneficial effects of WPS on improving apparent fracture toughness for specimens or structures are used, the loads in WPS need to be limited so that no obvious void damage and ductile tearing are produced in front of defects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 76, Issue 8, May 2009, Pages 1010-1023
نویسندگان
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