Contribution to the Knowledge of Procedures going on during Cyclic Stressing of Materials

The investigations into the behaviour of materials under cyclic stressing consists in the determination of reliable data obtained from endurance tests according to the Woehler method and further clarification of the effects under different stress conditions during cyclic stressing in the material. Besides mechanical methods, electrical, magnetic, X-ray investigation methods, metallographic and chemical -analytical methods are also employed. The changes in microstructure and crystal structure of a mild steel after cold straining and cyclic stressing are disc-ussed