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  • 1980-1984  (28)
  • 1960-1964  (4)
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  • 1
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    LOW-CYCLE FATIGUE AND CYCLIC CREEP OF METALS (1980)
    Springer
    Details
    Publication Date: 1980-10-01
    Print ISSN: 0376-9429
    Electronic ISSN: 1573-2673
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    LOW-CYCLE FATIGUE AND CYCLIC CREEP OF METALS (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 3 (1980), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— This paper deals with the effect of accumulated (oriented) plastic deformation (cyclic creep) on the life of metals under conditions of cyclic loading typically in the range of low-cycle fatigue. Specific features of cyclic creep of aluminium, titanium alloys and structural steels were investigated for the lives ranging from 05 to 2 × 105 cycles to rupture as well as specific features of transition from quasistatic to fatigue fracture associated with the variation in the mode of deformation of metals. It is shown that under conditions of repeated stress-controlled loading in a wide range of low temperatures, the cyclic creep processes are the predominant ones determining life of metals over a wide range of cycles, and when calculating life under these conditions it is necessary to take into account the rate of these processes irrespective of the type of fracture: quasistatic or fatigue. An equation was obtained for calculating life under low-cycle loading conditions which takes into account the interrelationship between the life, the accumulated plastic strain, steady-state cyclic creep rate and the resistance of the material to cyclic creep.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.1980.tb01380.x
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  • 3
    Electronic Resource
    Electronic Resource
    Damping and metal failure in multicycle loading with inhomogeneous states of strain. Part 1 (1981)
    Springer
    Strength of materials 13 (1981), S. 1073-1080 
    Details
    ISSN: 1573-9325
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00762260
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of the dimensions of specimens on the crack resistance of creep-resisting hull steels (1982)
    Springer
    Strength of materials 14 (1982), S. 1289-1298 
    Details
    ISSN: 1573-9325
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. Increased thickness of specimens leads to reduced rate of fatigue crack growth on the first section of the diagram of fatigue failure and to increased value of Kth of the investigated steels at 293°K. This is probably due to the increased residual compressive stresses in the crack mouth and the increased time necessary for the emergence of a crack, originating in the central regions of the specimen, onto its lateral surface when the dimensions of the specimen are increased. 2. Increased thickness of the specimen practically does not cause a change of the rate of fatigue crack growth on the Paris section, but it increases the characteristics Kfc and KQ of the investigated steels under cyclic and static loading, respectively. 3. The effect of the scale on the characteristics of fracture toughness of structural steels is apparently connected with the proneness of the material to strain-hardening.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00770121
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  • 5
    Electronic Resource
    Electronic Resource
    Calculation of fatigue and life of crack-bearing structural elements under cyclic load (1982)
    Springer
    Strength of materials 14 (1982), S. 1434-1439 
    Details
    ISSN: 1573-9325
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00768934
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of strain history and load cycle asymmetry on the fracture toughness characteristics of alloy VT9 (1982)
    Springer
    Strength of materials 14 (1982), S. 1575-1579 
    Details
    ISSN: 1573-9325
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. It was shown that the unidirectional accumulation of plastic strain during low-cycle loading leads to a reduction in the critical fatigue fracture toughness of alloy VT9. 2. The process of sign-changing reversible deformation does not change the critical value of the fatigue fracture toughness of alloy VT9, regardless of the strain amplitude. 3. The load-cycle asymmetry coefficient Rσ significantly affects both the amount of unidirectionally accumulated plastic strain and the critical stress intensity factor in the low-cycle fatigue region, lowering the value of the latter in the transition from pulsating loading (Rσ = 0) to symmetrical loading (Rσ = -1).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00768640
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  • 7
    Electronic Resource
    Electronic Resource
    Strain criteria of fatigue fracture accounting for the stress state (1984)
    Springer
    Strength of materials 16 (1984), S. 1-7 
    Details
    ISSN: 1573-9325
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. Plastic strains are a measure of diffuse fatigue damage at the stage of fatiguecrack initiation. This stage concludes with the formation of a macrocrack, which leads to final fracture. 2. The cyclic-strain curves of the investigated materials in torsion and tension-compression are closest in the coordinates of octahedral shear stress versus octahedral shear strain. 3. The level of plastic strain per cycle at the stabilization stage can be taken as a criterion of fatigue-crack initiation which is independent of the type of stress state. 4. The amount of total octahedral shear strain may serve as a criterion of final fracture which allows for the type of stress state for the materials studied here.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01530175
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  • 8
    Electronic Resource
    Electronic Resource
    Predicting endurance in programmed cyclic loading taking into account scattering of the properties (1984)
    Springer
    Strength of materials 16 (1984), S. 1341-1348 
    Details
    ISSN: 1573-9325
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. A method of constructing the fatigue curves for individual specimens by measuring the inelasticity characteristics on the reference level of the stress amplitude is proposed. 2. If the scatter of the fatigue strength characteristics of the individual specimens is taken into account using the proposed method, the agreement between the experimental data and the linear hypothesis of damage summation is improved. 3. In the given steels and loading regimes, the main error in applying the Palmgren-Mainer hypothesis is caused by the fact that the scatter of the properties of the individual specimens is not taken into account in calculating endurance. 4. The best agreement between the experimental and calculated values of the number of cycles to fracture is recorded in the range of short endurances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01530316
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  • 9
    Electronic Resource
    Electronic Resource
    Use of fatigue-damage transducers to evaluate the loading of structural elements (1984)
    Springer
    Strength of materials 16 (1984), S. 1663-1667 
    Details
    ISSN: 1573-9325
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01537995
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of load cyclicity on the fracture toughness characteristics of steels. Report 1 (1980)
    Springer
    Strength of materials 12 (1980), S. 1341-1348 
    Details
    ISSN: 1573-9325
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. We studied the effect of teat temperature on fracture toughness characteristics and features of stable and unstable fatigue crack growth in the static and cyclic loading of steels 15Kh2MFA and 15Kh2NMFA (I, II). 2. It was shown that a reduction in test temperature leads to a substantial reduction in the fracture toughness characteristics K fc 1 , K fc k , and kIc of the investigated steels under static and cyclic loadings. Under certain conditions, for several of the materials the cyclicity of the loading substantially lowers the fracture toughness characteristics. For the steels investigated, at 293 °K loading cyclicity negligibly changes K fc 1 compared to kc. At low temperatures, k fc 1 changes substantially compared to KIc. For a given test temperature, the values of K fc 1 at which loading cyclicity has a significant effect depends on the initial value of KI at the beginning of the test and on the number of load cycles. 3. The laws of unstable fatigue crack growth in steels 15Kh2MFA and 15Kh2NMFA (I, II) under cyclic loading (number and sizes of crack jumps) are determined by the test temperature, the level of initial values of KI in the test, and the ratios of the fracture toughness characteristics K fc 1 , K fc k , and kIc. 4. A reduction in the test temperature leads to an increase in resistance to fatigue crack growth at low values of kI and a decrease in resistance to fatigue crack growth at higher KI. 5. A reduction in loading frequency ambiguously affects resistance to fatigue crack growth for different materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01124555
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