کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
770932 1463129 2012 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The use of cyclic ΔJρ as a parameter for fatigue initiation of X52 steel
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
The use of cyclic ΔJρ as a parameter for fatigue initiation of X52 steel
چکیده انگلیسی

The concept of ΔJ cyclic has been extended to fatigue initiation emanating from notch. The parameter is then named ΔJρ. Validation of this parameter is made by fatigue tests made on Roman tile specimens made in X52 pipe steel. Here, fatigue initiation is detected by acoustic emission. It has been found that the fatigue initiation decreases after hydrogen absorption. This can be explained by interaction of hydrogen and plasticity as can be seen for tensile and fracture behaviour of X52 steel after introduction of hydrogen.


► The concept of ΔJ cyclic has been extended to fatigue initiation emanating from notch.
► Mechanicals properties were evaluated by tensile and three points bending tests.
► Fatigue initiation is detected by acoustic emission.
► The cyclic ΔJρ integral is computed by finite element method.
► We use the cyclic stress–strain behaviour obtained from the hysteresis loop.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 96, December 2012, Pages 82–95
نویسندگان
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