Advertisement

Strength of Materials

, Volume 24, Issue 3, pp 248–253 | Cite as

A method of determining the critical value of the J-integral under conditions of stable crack growth

  • A. V. Il'in
  • Yu. A. Nikonov
  • D. V. Prokhorov
Scientific-Technical Section

Abstract

A method is given for determining cracking resistance based on the strain diagram for stable crack growth; the specimen is loaded to give a set rate of crack extension or with given speed for the clamps. The critical value of the Jintegral has been determined by calculating the work of strain for a hypothetical specimen composed of a nonlinearly elastic material whose cracking resistance is equal to that of the actual one. Two forms of implementation are considered: simplified and numerical. The results are compared with those from standard methods and show that the proposed method is promising as it can be based on tests on a single specimen with a simple technique.

Keywords

Standard Method Elastic Material Simple Technique Crack Extension Single Specimen 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    A. Ya. Krasovskii, “A note on the paper by V. M. Markochev and E. M. Morozov,” Probl. Prochn., No. 5, 75–79 (1980).Google Scholar
  2. 2.
    V. V. Panasyuk, S. E. Kovchik, and L. V. Nagirnyi, “Methods of determining crack propagation resistance,” Fiz.-Khim. Mekh. Mater., No. 2, 75–79 (1979).Google Scholar
  3. 3.
    B. M. Kim and C. R. Joc, “Comparison of the locus and extrapolation methods that determine the critical J-integral in the presence of remote energy dissipation,” Eng. Fract. Mech.,30, No. 4, 493–503 (1988).Google Scholar
  4. 4.
    A. Zaczyk, L. Wojnar, and W. Dziadur, “Fracture toughness testing of ductile materials showing stable crack growth,” Proc. 6th Bienn. Eur. Conf. (Amsterdam, June 15–20), Vol. 1, (1986), pp. 193–196.Google Scholar
  5. 5.
    A. Ya. Krasovskii, “Temperature dependence of the failure viscosity for vessel steels in static and shock loading with allowance for the scale effect,” Probl. Prochn., No. 7, 3–8 (1984).Google Scholar
  6. 6.
    F. W. Brust, T. Nishioka, S. N. Atluri, and M. Nakagaki, “Further studies on elasticplastic stable fracture utilizing T⋆ integral,” Eng. Fract. Mech.,22, 1079–1103 (1985).Google Scholar
  7. 7.
    S. Atluri (ed.), Computational Methods in Failure Mechanics [Russian translation], Mir, Moscow (1990).Google Scholar
  8. 8.
    V. M. Markochev and E. M. Morozov, “Energy relationships in the deformation of a specimen containing a crack,” Probl. Prochn., No. 5, 66–74 (1980).Google Scholar
  9. 9.
    A. V. Il'in, Yu. A. Nikonov, and D. V. Prokhorov, “Determining cracking resistance for viscous materials,” Sudostr. Prom. Metallov., No. 11, 16–27 (1989).Google Scholar
  10. 10.
    D. G. H. Latzko, G. E. Turner, and J. D. Landes, Post-yield Fracture Mechanics, London (1984), p. 491.Google Scholar

Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • A. V. Il'in
    • 1
  • Yu. A. Nikonov
    • 1
  • D. V. Prokhorov
    • 1
  1. 1.Prometheus Central Constructional Mechanics Research InstituteSt. Petersburg

Personalised recommendations