On the Residual Stress due to Repeated Tension of Steel

Abstract

When the steel specimens are subjected to repeated tension, residual stress is induced in the body during stress repetition. In this report, the results of measurement of those residual stresses are shown.
The specimens were repeatedly stressed at four stress levels above and below the fatigue limit, and the residual stress of some specimens in the course of stressing was measured by the X-ray method.
Stressed at a level below the fatigue limit, the residual stress showed but little change during stress repetition. But stressed at a level above the fatigue limit, there were considerable changes in distribution and magnitude of the residual stress, and this was manifest at a stress level near the fatigue limit.