Influence of state of stress on mixed mode stable crack growth through D16AT aluminium alloy

A. H.I. Mourad, S. K. Maiti

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

The stable crack growth through three-point bend (TPB) and stiffened and unstiffened compact tension (CT) specimens of D16AT aluminium alloy has been studied both theoretically and experimentally. The specimen thickness is 8 mm. The variation of load with crack opening displacement, the extent of stable crack growth, the cumulative plastically deformed zone and crack edge profiles have been obtained experimentally. These are also predicted theoretically under the assumption of either a state of plane stress or plane strain using a finite element scheme and the COA criterion. Generally, the experimental results agree well with the predictions based on the plane stress condition. There appears to be no significant variation in size of the experimental cumulative plastic zone across the specimen thickness, thereby indicating that the constraint on the plastic zone does not develop near the mid-thickness region.

Original languageEnglish
Pages (from-to)241-258
Number of pages18
JournalInternational Journal of Fracture
Volume72
Issue number3
DOIs
Publication statusPublished - Sep 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

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