Correcting Fatigue Life Inadequacy: Evaluation of the Approximate Area Increase Required to Improve Fatigue Life Based on the Use of Stress‐Cycles and Stress‐Strain Curves

WHERE service life, cither actual or simulated, has proven to be inadequate, the need for a simple conversion of fatigue cycles to service life is paramount. The task becomes exceedingly difficult in the case of service life where neither number nor magnitudes of loads can be determined. The only known quantity is that the machine or structure lasted only one‐tenth, one‐third, or not quite as long as it should.