@ARTICLE{Rozumek_Dariusz_J-integral_2006, author={Rozumek, Dariusz}, volume={vol. 53}, number={No 3}, journal={Archive of Mechanical Engineering}, pages={211-225}, howpublished={online}, year={2006}, publisher={Polish Academy of Sciences, Committee on Machine Building}, abstract={The paper presents kinetic fatigue crack growth curve for IOHNAP steel, which is verified experimentally. An energy approach based on the M-integral range is shown. The tests have been carried out on plane specimens With notches under tension-compression for three values of stress ratio R. The J-integral is calculated analytically and by the finite element method. A relationship for the description of the whole kinetic crack growth curve including J-integral is presented. It is shown that at the constant loading and the change of stress ratio R from - 1 to O the fatigue crack growth rate increases. A relationship is proposed in the paper for description of the kinetic crack growth curve. It gives results that are consistent with experimental ones and those obtained with the use of the finite element method (FEM).}, type={Article}, title={J-integral in the description of elasto-plastic crack growth kinetics curve}, URL={http://ochroma.man.poznan.pl/Content/124914/PDF/3_MECHANICAL_53_2006_3_Rozumek_J_integral.pdf}, keywords={fatigue crack growth rate, stress ratio, finite element method}, }