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Elastic–plastic fatigue crack growth in 18G2A steel under proportional bending with torsion loading
Author(s) -
ROZUMEK D.,
MACHA E.
Publication year - 2006
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.1460-2695.2006.00972.x
Subject(s) - materials science , torsion (gastropod) , stress intensity factor , paris' law , structural engineering , composite material , crack closure , alloy , j integral , bending , alloy steel , fracture mechanics , engineering , medicine , surgery
The paper presents the results of fatigue crack growth on low‐alloy 18G2A steel under proportional bending with torsion loading. Specimens with square sections and a stress concentration in the form of external one‐sided sharp notch were used. The tests were performed under the stress ratios R =−1, −0.5 and 0. The test results were described by the Δ J ‐integral range and compared with the Δ K stress intensity factor range. It has been found that there is a good agreement between the test results and the model of crack growth rate, which includes the Δ J ‐integral range.