抄録
Fatigue tests under 0-compression strain were conducted at room temperature for stainless steel which is used for brake discs. The experimental results revealed that cracks occurred due to cyclic 0-compressive strain. The crack initiation mechanism is as follows. At the first loading cycle, the material compressively yields when the applied compressive strain is great. Resultantly, the tensile stress was induced when the strain becomes zero. Then, material is cyclically subjected to compression - tension alternative lads. Such fatigue loads cause cracks in the material even at low cycle fatigue.
