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    • P K Ray

      Articles written in Bulletin of Materials Science

    • Volume 25 Issue 4 August 2002 pp 301-307 Alloys and Steels

      Fatigue crack growth retardation in spot heated mild steel sheet

      B B Verma P K Ray

      More Details Abstract Fulltext PDF

      A fatigue crack can be effectively retarded by heating a spot near the crack tip under nil remote stress condition. The subcritical spot heating at a proper position modifies the crack growth behaviour in a way, more or less, similar to specimen subjected to overload spike. It is observed that the extent of crack growth retardation increases with increasing level of overload as well as with increasing spot temperature. It is also observed that modification in crack growth behaviour is a function of location of heating spot and maximum retardation is observed at + 5 position.

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