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  • 1
    Electronic Resource
    Electronic Resource
    CRACK GROWTH ANALYSIS FOR VARIABLE LOADING CONDITIONS (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 15 (1992), 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— Structural element service conditions often involve a number of thermo-mechanical loading factors. Increasing the number of these variable factors, the evaluation of crack growth resistance becomes rather complicated. So, it is of practical importance to predict the material crack growth resistance over a wide range of service conditions from the results of a limited number of standard specimen tests under specified loading conditions. The present note is based on a mathematical theory and tests on a limited number of standard specimens. A functional dependence has been obtained between the crack growth rate and kinetic equation parameters and the values of thermo-mechanical loading factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.1992.tb01308.x
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  • 2
    Electronic Resource
    Electronic Resource
    One approach to averaging creep test results (1980)
    Springer
    Strength of materials 12 (1980), S. 473-477 
    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 has been developed for statistical averaging of a family of initial creep curves obtained under similar test conditions taking into consideration the time dispersion of the characteristic points of the creep curve determining the boundaries separating the stages. 2. The algorithm developed is the basis for accomplishing a full statistical treatment of the results of long-term creep tests with the use of standard procedures. On the basis of such an averaging of test results it is possible to obtain physically more soundly based information on the rules of long-term plastic deformation of a material applicable to the methods of prediction which have been developed in [2].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00769405
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  • 3
    Electronic Resource
    Electronic Resource
    An approach to numerical solution of the problem of predicting long-term strength by summary diagrams (1978)
    Springer
    Strength of materials 10 (1978), S. 648-652 
    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/BF01523894
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  • 4
    Electronic Resource
    Electronic Resource
    Algorithm for the numerical solution of problems of extrapolation and interpolation of limiting creep stress characteristics of metallic materials by the method of generalized diagrams (1978)
    Springer
    Strength of materials 10 (1978), S. 1072-1076 
    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/BF01523445
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  • 5
    Electronic Resource
    Electronic Resource
    Theoretical estimate of the life of gas-turbine-engine compressor blades (1981)
    Springer
    Strength of materials 13 (1981), S. 575-579 
    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/BF00762970
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  • 6
    Electronic Resource
    Electronic Resource
    Predicting residual life in the presence of defects in elements of steel 15Kh1M1FL casings (1984)
    Springer
    Strength of materials 16 (1984), S. 149-156 
    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/BF01530047
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  • 7
    Electronic Resource
    Electronic Resource
    Prediction of the probability of nonfailure of structural elements of heat-and-power-generating equipment from the fracture-toughness characteristics of the material (1987)
    Springer
    Strength of materials 19 (1987), S. 7-14 
    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 A method was developed to predict the life of important structural elements of heat-and-power-generating equipment from the parameter of the probability of nonfailure on the basis of statistical modeling of the vector of random parameters of crack-resistance characteristics of the metal using criteria of linear fracture mechanics. We also developed an algorithm and a program which automate the computing process with the use of modern computers to predict the life of a structure from the crack resistance of the material in a probabilistic formulation. We will subsequently conduct studies involving the construction and substantiation of the representativeness of samples of mechanical tests of materials for crack resistance, which is very important in predicting the safe life of a structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01524453
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  • 8
    Electronic Resource
    Electronic Resource
    Accuracy of the method of predicting the kinetic characteristics of subcritical creep crack growth in material (1987)
    Springer
    Strength of materials 19 (1987), S. 293-300 
    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 obtained an equation describing the degree of influence of the level of the systematic error of the method of far extrapolation of the characteristics of the subcritical creep crack growth in a material [1] on the accuracy of the predicted durability (life) of a structural element. 2. The accuracy of the engineering method of extrapolating the kinetic characteristics of the subcritical creep crack growth of heat-resistant metallic materials is substantially influenced by the error of the geometric similarity of the diagrams of failure, the ratio of the ordinate of the polar point Ko to the extrapolated value of the SIF K1m, and by the remoteness of the extrapolation of αm carried out.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01524122
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  • 9
    Electronic Resource
    Electronic Resource
    Engineering method of predicting creep crack growth in materials (1987)
    Springer
    Strength of materials 19 (1987), S. 1046-1052 
    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 worked out and substantiated an engineering method of temperature-time prediction of the kinetic characteristics of subcritical creep crack growth from the results of crack resistance tests of limited duration by using the criteria of linear fracture mechanics. 2. The suggested method of prediction takes integrally into account the change of the predominant mechanisms of failure in the metal of structural elements of thermal power generating equipment; this makes it possible to solve problems of extrapolation with better physical substantiation. 3. Our calculations make it possible to work out scientifically substantiated recommendations for determining the periods of maintenance and the remaining life of critical structural elements of large power units of thermal power stations operating under conditions of creep. 4. It is necessary to work in the field of experimental investigations of the temperature-time regularities of creep crack nucleation in the zone of a stress raiser with the object of working out scientifically substantiated methods of distant interpolation of crack nucleation; this will make it possible to predict the full life of objects operating under conditions of long-term thermal and mechanical loading.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01523283
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  • 10
    Electronic Resource
    Electronic Resource
    Relationship of the kinetic diagram of creep crack growth to the failure mechanism of heat-resistant steels. Report 1 (1989)
    Springer
    Strength of materials 21 (1989), S. 575-581 
    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 significant creep crack growth rate (−10−4−10−5 mm/h) is observed to take place in energy equipment components at values of KI\t~0.1KIc at a temperature of 838 K. Propagation of the creep crack in the hot zones of steam turbine components may make a significant contribution to the subcritical growth of the crack. With increase in the temperature and the load, the rate of creep crack growth sharply increases. 2. It was established that the diagram of creep crack growth of heat resistant steels over intervals of temperature and loading which correspond to those found in service has three sections. Transfer from the first section to the second is associated with a change in the failure mechanism, and from the second to the third with a change from failure controlled by the value of KI to that of failure controlled by the value of the modified J*.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01528634
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