THE INTERFACE CRACK

It is known that oscillatory singularities appear in problems involving interface cracks that are assumed to have open tips. An unsatisfacory aspect of the oscillatory singularities is that they lead to overlapping of the crack faces. The interface crack in a tension field, originially treated by England among others, is thus reconsidered on the basis that the crack is not completely open and that its faces are in frictionless contact near the tips. The formulation leads to a pair of coupled singular integral equations. The singularities, no longer oscillatory, exhibit some unusual features and indicate that the spreading of the interface crack in a tension field is intimately connected with failure in shear. A new stress-intensity factor is obtained and compared to the stress-intensity factors for the completely open crack. /Author/

• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Comninou, M
• Publication Date: 1977-12

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 631-636
• Serial:
  • ASME Journal of Applied Mechanics
  • Volume: 44E
  • Issue Number: 4
  • Publisher: American Society of Mechanical Engineers

Subject/Index Terms

• TRT Terms: Cracking; Friction; Integral equations; Interfaces; Oscillation; Shear strength; Tension
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00170815
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM