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fatigue failure [1 record]

Record 1 2015-04-13


Subject field(s)
  • Rheology
  • Scientific Measurements and Analyses
  • Engineering Tests and Reliability
  • Strength of Materials

Repeated loading of metal to stresses lower than the ultimate strength is called fatigue loading and the fracture which results is a fatigue failure.


Fatigue failures occur because of localized hardening and embrittling of the metal specimen which results from the repeated plastic deformation caused by the applied load.


Several joints of [heavyweight drill] pipe may be placed ... in the drill stem between the drill collars and regular drill pipe to provide a gradual change in stiffness and thus reduce the chances of drill-pipe fatigue failure in this portion of the drill stem.

Key term(s)
  • fatigue-related failure
  • fatigue related failure


  • Rhéologie
  • Mesures et analyse (Sciences)
  • Fiabilité, contrôle et essais (Ingénierie)
  • Résistance des matériaux

Lorsqu'un métal est soumis à une contrainte qui varie périodiquement avec le temps (contrainte cyclique), la rupture peut se produire pour des valeurs de la contrainte maximale bien inférieures à la charge de rupture et même à la limite élastique du matériau. C'est la rupture par fatigue.

Key term(s)
  • rupture due à la fatigue
  • défaillance causée par la fatigue


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