caa a22 4500 465770002 CHVBK 20180323111926.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF00727080 doi (NATIONALLICENCE)springer-10.1007/BF00727080 A crack growth criterion in research on cyclic cracking resistance in elevated-plasticity materials [Elektronische Daten] [O. Romaniv, G. Nikiforchin, O. Student, I. Skripnik] Conclusion: Existing methods of determining parameter δ have not been widely used in testing because of imperfections. The basis of the proposed method is to estimate features in the strain pattern around a crack vertex that make themselves felt in displacement discontinuity. The method is based on measuring the distances between marks on the side surface. These are used in constructing the increment in the measurement baseline in a loading cycle as a function of the magnitude of the latter, which is extrapolated to zero baseline to determine the true Δδ. The method has been tested on electrotechnically pure aluminum as a model material with high plasticity. It is found to be possible to use the A6 criterion determined by this method. The linear mechanics of failure does not give an unambiguous description for fatigue failure in aluminum because the crack growth kinetics may be dependent on the crack length. At the same time, the growth rate is unambigously determined by the vertex cyclic opening over a wide range in crack length. In a log-log plot, the kinetic diagram for fatigue failure is described satisfactorily by a straight line, so 6 is recommended as a better criterion for evaluating cyclic cracking resistance in plastic materials. Plenum Publishing Corporation, 1990 Romaniv O. Karpenko Physicomechanics Institute, Academy of Sciences of the Ukrainian SSR, Lvov aut Nikiforchin G. Karpenko Physicomechanics Institute, Academy of Sciences of the Ukrainian SSR, Lvov aut Student O. Karpenko Physicomechanics Institute, Academy of Sciences of the Ukrainian SSR, Lvov aut Skripnik I. Karpenko Physicomechanics Institute, Academy of Sciences of the Ukrainian SSR, Lvov aut Soviet materials science : a transl. of Fiziko-khimicheskaya mekhanika materialov / Academy of Sciences of the Ukrainian SSR Kluwer Academic Publishers-Plenum Publishers 25/6(1990-11-01), 560-564 0038-5565 25:6<560 1990 25 11003 https://doi.org/10.1007/BF00727080 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00727080 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Romaniv O. Karpenko Physicomechanics Institute, Academy of Sciences of the Ukrainian SSR, Lvov aut NATIONALLICENCE 700 1- Nikiforchin G. Karpenko Physicomechanics Institute, Academy of Sciences of the Ukrainian SSR, Lvov aut NATIONALLICENCE 700 1- Student O. Karpenko Physicomechanics Institute, Academy of Sciences of the Ukrainian SSR, Lvov aut NATIONALLICENCE 700 1- Skripnik I. Karpenko Physicomechanics Institute, Academy of Sciences of the Ukrainian SSR, Lvov aut NATIONALLICENCE 773 0- Soviet materials science : a transl. of Fiziko-khimicheskaya mekhanika materialov / Academy of Sciences of the Ukrainian SSR Kluwer Academic Publishers-Plenum Publishers 25/6(1990-11-01), 560-564 0038-5565 25:6<560 1990 25 11003 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer