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A CALCULATION OF THE THRESHOLD STRESS INTENSITY RANGE FOR FATIGUE CRACK PROPAGATION IN METALS
Author(s) -
CHONGHUA YU,
MINGGAO YAN
Publication year - 1980
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1980.tb01113.x
Subject(s) - materials science , stress intensity factor , intensity (physics) , range (aeronautics) , structural engineering , fracture mechanics , crack closure , fatigue testing , stress (linguistics) , stress concentration , composite material , mechanics , engineering , optics , physics , linguistics , philosophy
— In this paper the strain distribution and the plastic zone size at a fatigue crack tip are discussed. From this analysis and considering the critical condition for plastic‐blunting, a simple analytical formula for calculating the threshold stress intensity range for fatigue crack propagation at R = 0 is proposed. It is found that calculated values are in good agreement with existing experimental results.