Scaling Invariance of Fatigue Crack Growth in Gigacycle Loading Regime
TypeArticles dans des revues avec comité de lecture
The role of the collective behavior of defect ensembles at the crack tip and the laws of fatigue crack propagation in R4 high strength steel have been studied under conditions of symmetric tension–compression gigacycle loading at 20 kHz. At every stage of the fatigue crack growth, replicas from the sample side surface were taken and studied by the method of three dimensional relief profilometry (using NewView interferometer profilometer) so as to study the scaling invariant laws of defect related structure evolution.
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OBORIN, V.; BANNIKOV, M.V.; NAIMARK, O.B; PALIN-LUC, Thierry (Wiley, 2010)The role of the collective behavior of defect ensembles at the crack tip and the laws of fatigue crack propagation in R4 high-strength steel have been studied under conditions of symmetric tension-compression gigacycle ...
Experimental and Theoretical Study of Multiscale Damage-Failure Transition in Very High Cycle Fatigue BETEKHTIN, V.I.; KADOMTSEV, A.G.; NARYKOVA, M.V.; BANNIKOV, M.V.; ABAIMOV, S.G.; AKHATOV, I. S.; PALIN-LUC, Thierry; NAIMARK, O.B (Pleiades, 2017)Multiscale mechanisms of failure of metals (Armco iron, titanium, aluminum) are studied for high cycle and very high cycle fatigue. By correlating with the results of structural studies, a theoretical approach is developed ...
Experimental Investigations of Anomalous Energy Absorption in Nanocrystalline Titanium under Cyclic Loading Conditions PLEKHOV, O.A; NAIMARK, O.B; VALIEV, R.Z; SEMENOVA, I.P; SAINTIER, Nicolas; PALIN-LUC, Thierry (Wiley, 2008)An infrared thermographic scanning technique has been used to study the energy absorption and dissipation under cyclic loading conditions in the nanostructural bulk titanium obtained by severe plastic deformation of an ...
PLEKHOV, O.A; PALIN-LUC, Thierry; SAINTIER, Nicolas; UVAROV, S. V.; NAIMARK, O.B (Blackwell, 2005)The present work is devoted to the investigation of fatigue crack initiation and growth in middle-cycle fatigue (∼105 cycles). Smooth specimens made of 35CrMo4 quenched and tempered steel were loaded in fully reversed plane ...
PLEKHOV, O.A; NAIMARK, O.B; SAINTIER, Nicolas; PALIN-LUC, Thierry (Pleiades Publishing, 2009)The structural and thermodynamic features of the elastic–plastic transition in armco iron and its plastic deformation are studied. Energy storage in iron is shown to have a nonlinear character and be accompanied by wavelike ...