Method of calculation and experimental
estimation of crack growth resistance under cyclic elastoplastic deformation is
proposed. This method is based on measuring of local plastic strain near the
crack tip and plotting the cyclic elasto-plastic fracture diagram for a
specimen with a crack. Analysis of two types of the cyclic elasto-plastic
fracture diagrams and their parameters is made. Ex-perimental D-diagrams of
cyclic elasto-plastic fracture for the plastic carbon steel are given.
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[3]
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[4]
РД 50-345-82 (1982) Calculations and Tests for Strength. Methods of Mechanical Tests of Metals. Definition of Crack Growth Resistance Characteristics (Viscosity of Destruction) at Cyclic Loading. Methodical Instructions. Moscow.
[5]
Drozdovsky, B.А. and Morozov, E.M. (1976) Methods of an Estimation of Viscosity of Destruction. Zavodskaya Laboratoriya, 8, 916-1004.
[6]
Sosnovskiy, L.A. (1990) Cyclic Elasto-Plastic Fracture Diagram for a Specimen with a Crack and Its Basic Points. Vesty AS BSSR, series of phis.-tech. sciences, 2, 3-7.
[7]
Sosnovskiy, L.A., Hamaza, L.A. and Babich, N.K. (1990) Experimental Research of Cyclic Crack Growth Resistance of Steel 20. Problems of Strength, 6, 34-38.
[8]
Sosnovskiy, L.A. and Bogdanovich, A.V. (1995) The Analysis of Cyclic Elasto-Plastic Fracture Diagram for a Specimen with a Crack. Part 1. Problems of Strength, 5-6, 39-51.
[9]
Sosnovskiy, L.A. and Bogdanovich, A.V. (1995) The Analysis of Cyclic Elasto-Plastic Fracture Diagram for a Specimen with a Crack. Part 2. Problems of Strength, 5-6, 52-61.
[10]
Sosnovskiy, L.A. (1987) Statistical Mechanics of Fatigue Fracture. Science and Technics, Minsk.
