The initial energy release rate for a branch crack propagating at an arbitrary angle from an existing crack tip is obtained in a simple fashion and in closed form by using a continuity assumption. It is then postulated that the branch crack propagates in the direction which causes the energy release rate to be a maximum and that initiation occurs when the value of this release rate reaches a critical value. It is shown that these postulates yield results identical to the maximum stress theory, since the direction in which the maximum circumferential stress occurs is also the direction causing the maximum energy release rate.

  • Availability:
  • Corporate Authors:

    Wolters-Noordhoff N.V.

    Oude Boteringe Strasse 22
    8001 Groninger,   Netherlands 
  • Authors:
    • Nuismer, R J
  • Publication Date: 1975-4

Media Info

  • Features: References;
  • Pagination: p. 245-250
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00127020
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Nov 5 1975 12:00AM