کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
772065 | 1463147 | 2008 | 17 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Experimental determination and modelling of long crack crack-face interference-free crack propagation behaviour in normalized SAE 1045 steel Experimental determination and modelling of long crack crack-face interference-free crack propagation behaviour in normalized SAE 1045 steel](/preview/png/772065.png)
Crack-face interference-free crack growth rate data were obtained from special intermittent overload tests on axial-torsion specimens. Data obtained from these tests and short crack data taken from the literature fell into a single scatter band. These data were used in a short crack growth model to predict the crack length at the changeover from a shear mode to a tensile mode crack plane and the fatigue life for axial-torsional fatigue tests that again used these special overload sequences to achieve crack closure-free/crack-face interference-free crack growth. Model predictions based on two separate criteria for mode change – maximum crack growth rate and maximum strain energy release rate – each predicted reasonably well both the crack length at the change in crack plane and the fatigue life.
Journal: Engineering Fracture Mechanics - Volume 75, Issues 3–4, February–March 2008, Pages 804–820