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The Behaviour of a Process Zone at the Root of a Deep Sharp Flaw for Mode I Loading

[+] Author Affiliations
E. Smith

Manchester University, Manchester, UK

Paper No. PVP2003-1995, pp. 97-101; 5 pages
  • ASME 2003 Pressure Vessels and Piping Conference
  • Fatigue, Fracture, and Damage Analysis
  • Cleveland, Ohio, USA, July 20–24, 2003
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4152-9
  • Copyright © 2003 by ASME


The process zone representation of non-linear behaviour at the root of a flaw or crack is frequently used to quantify fracture initiation scenarios. In a paper presented at the 2002 PVP Conference, the author showed that with regard to a process zone at the root of a deep sharp flaw for Mode III loading conditions, its behaviour can be described, to a good degree of accuracy, by inputting the stress distribution ahead of the actual flaw root into an analysis of a process zone at the root of a semi-infinite crack in an infinite solid. The present paper describes an analysis of the analogous Mode I loading situation, with the results being compared with those obtained by a procedure which blends the small and large s/ρ behaviours where s is the process zone size and ρ is the flaw root radius of curvature.

Copyright © 2003 by ASME



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