Elastic-Plastic Failure Analysis for a Rotor Disk with a Surface Crack

  • S. Kanno
  • S. Sakata
  • T. Shimizu
Conference paper


In order to evaluate a structural integrity of rotating machinary, a roter disk model specimen with an inner surface crack was used for rotating test and J-integral was calculated by the finite element method (FEM). This method can predict that stable crack growth occurs at a rotating speed in which the maximum value of the J-integral along the front of the surface crack becomes greater than the fracture toughness JIC of the disk material. In addition, Two-criteria method was applied to the assessment of rotor disk integrity. It was recognized that the critical speed from Two-criteria assessment agreed well with that from the JIC-criterion.


Fracture Toughness Stress Intensity Factor Surface Crack Crack Depth Rotor Disk 
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Copyright information

© Springer Japan 1986

Authors and Affiliations

  • S. Kanno
    • 1
  • S. Sakata
    • 1
  • T. Shimizu
    • 1
  1. 1.Mechanical Engineering Research LaboratoryHitachi, Ltd.Hitachi, Ibaraki, 317Japan

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