Mixed mode stable crack extensions through stiffened specimens

Abdel Hamid I. Mourad, Eltahry Elghandour, Faysal A. Kolkailah

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


This study presents an experimental investigation of fracture mechanics for isotropic material, aluminum alloy D16AT. The problem of stable crack growth (SCG) has been addressed in this paper. Experimental results are presented for symmetrically stiffened and unstiffened three point bend specimens subjected to different modes, mode I and mixed mode. The stiffeners are doubly bonded to the fatigue pre-cracked specimens parallel to the length at a certain distance behind the crack tip using an adhesive Redux 410 NA. Results concerning load displacement variation, growth of plastic zones, instantaneous crack edge profiles, tunneling, are presented. There is evidence that the whole stable growth can be characterized by the crack opening angle, COA, criterion. The stiffening helps to increase both initiation and maximum fracture loads substantially.

Original languageEnglish
Pages (from-to)II/-
JournalInternational SAMPE Symposium and Exhibition (Proceedings)
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1999 44th International SAMPE Symposium and Exhibition 'Envolving and Revolutionary Technologies for the New Millennium', SAMPE '99 - Long Beach, CA, USA
Duration: May 23 1999May 27 1999

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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