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


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.


Standard Method Elastic Material Simple Technique Crack Extension Single Specimen 
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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

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