THE PROBLEM OF EDGE CRACKS IN AN INFINITE STRIP

The elastostatic plane problem for an infinite strip containing two symmetrically located internal cracks perpendicular to the boundary is formulated in terms of a singular integral equation with the derivative of the crack surface displacement as the density function. The solution of the problem is obtained for various crack geometries and for uniaxial tension applied to the strip away from the crack region. The limiting case of the edge cracks is then considered in some detail. The fundamental function of the integral equation is obtained and a numerical technique for solving the singular integral equations with this particular type of fundamental function which is characteristic of the edge cracks is described. The stress intensity factor for the complete range of net ligament-to-width ratio is calculated. The results also include the solution of the edge crack problem in an elastic half-plane.

• Corporate Authors:

  Lehigh University

  Institute of Fracture and Solid Mechanics
  Bethlehem, PA  United States  18015
• Authors:
  • Gupta, G D
  • Erdogan, F
• Publication Date: 1973-4

Media Info

• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Cracking; Elastic analysis; Fracture mechanics; Stresses
• Uncontrolled Terms: Stress intensity factors
• Old TRIS Terms: Crack stresses
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00054877
• Record Type: Publication
• Source Agency: Shock and Vibration Digest
• Report/Paper Numbers: NASA-CR-132288
• Files: TRIS
• Created Date: Jul 15 1974 12:00AM