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Fatigue Index page

Often machine members subjected to repeated stressing are found to have failed even when the actual maximum stresses were below the ultimate strength of the material, and quite frequently at stress values even below the yield strength.   The most distinguishing characteristics is that the failure had occurred only after the stresses have been repeated a very large number of times. Hence the failure is called fatigue failure

Fatigue Notes Stress Concentration Factors Fatigue Loading Modifying Factors
Fatigue Life Reducing Stress Concentrations Impact/Sudden Loading High Cycles Fatigue strength


Useful Links..
  1. FatigueCalculator.com... Excellent Source of Fatigue data. (Based on US materials )
  2. Metal Fatigue examples... Open University Notes and pictures
  3. Comparison of fatigue provisions in codes and standards... HSE down load related to offshore industry
  4. EPI Fatigue ... General Informative Notes
  5. ExcelCalcs... Excellent facility for Engineers. Library includes Fatigue calculator based on Roymech. (Membership required).
  6. Fatigue Basics -epi_eng ...Useful set of notes

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Last Updated 13/01/2013