CRACK-INITIATION MECHANISMS

First are noted basic requirements for initiating a crack in a solid. Then a brief outline is given of the arguments underlying current conventional dislocation theories. Finally attention is drawn to cases where these arguments can hardly hold and which seem to call for an alternative mechanism. One, a "dynamic overload" mechanism, is discussed and illustrated by scanning-electron micrographs.

• Corporate Authors:

  George Washington Transportation Research Institute. Center for Intelligent Systems Research

  ,    
• Authors:
  • Wood, W A
  • Gilmore, C M
• Publication Date: 1973-4

Media Info

• Features: References;
• Pagination: 16 p.

Subject/Index Terms

• TRT Terms: Cracking; Electron microscopy; Fatigue cracking; Fracture mechanics
• Uncontrolled Terms: Crack propagation
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00046667
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: #14 Tech Rpt
• Contract Numbers: N00014-67A-0214-0011
• Files: TRIS
• Created Date: Sep 18 1973 12:00AM