JIS Z 2274:1978 (R2016)

This Japanese Industrial Standard specifies the method of rotating bending fatigue testing of metals by the use of standard test pieces to be carried out at room temperature, in air, covering the fatigue life at the number of stress cycles not less than 104. The rotating bending herein signifies a loading method in such a manner that the repeated stress is applied to the test piece, while the test piece having the axis in the bending moment plane rotates relatively to the plane of the bending moment.