Journal
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
Volume 39, Issue 11, Pages 1407-1418Publisher
WILEY-BLACKWELL
DOI: 10.1111/ffe.12458
Keywords
pin loading; remote tension; SENB specimen; stress intensity factor; surface crack at notch; three-dimensional weight function
Funding
- National Natural Science Foundation of China [11402249]
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Stress intensity factors for half-elliptical surface cracks at a semi-circular notch in a recently developed single-edge notch bend specimen are determined for a wide range of geometrical parameters using a three-dimensional weight function method. Two load cases of pin loading and uniform remote tension are considered. The results are in good agreement with abaqus/franc3d finite element analysis. It is found that the Ziegler-Newman engineering similitude approach (programmed into the Fatigue Crack Growth Structural Analysis life-prediction code) produces good results for a wide range in a/c ratios. Expressions by multi-variable curve fitting to the weight function results are presented for easy engineering applications.
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