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THE STRESS INTENSITY FACTOR OF SMALL CRACKS AT NOTCHES
Author(s) -
SCHIJVE J.
Publication year - 1982
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.1460-2695.1982.tb01226.x
Subject(s) - stress intensity factor , radius , similarity (geometry) , stress (linguistics) , stress concentration , intensity (physics) , materials science , root (linguistics) , geometry , function (biology) , mathematical analysis , mathematics , structural engineering , mechanics , composite material , optics , physics , fracture mechanics , image (mathematics) , engineering , linguistics , philosophy , computer security , artificial intelligence , computer science , evolutionary biology , biology
— It was found in a previous publication that stress fields around notches are quantitatively very similar, if the peak stress at the notch root (σ peak ) and the notch root radius ( ρ ) are the same. As a consequence, small cracks (length l ) should have the same stress intensity factor, if σ peak and ρ are similar. This implies that the geometry factor C inshould primarily depend on l/ρ only, and not on other dimensions. Available data on calculated K values was analysed, which confirmed the similarity concept. An equation for C as a function of l/ρ was obtained. It was shown that K ‐values calculated with this equation are an accurate approximation for the stress intensity factor of small cracks at notches.