A novel high-frequency testing methodology for small thin-walled component-like structures is presented that enables fatigue tests up to 1e9 cycles within 7–8 days. A shaker excites the designed thin-walled (min. 0.1 mm) specimen near its resonant frequency and a non-contact relative displacement measurement allows to set a defined notch stress. Calculated and experimentally determined resonant frequencies deviate max. by −1.9%. Furthermore, vibration and temperature measurements prove the stability of the technique, no self heating of the specimen is detected. Validation tests with an X5CrNiCuNb16-4 steel show a typical S-N behaviour for this material, whereby cracks always appear in the intended notch.

提出了一种适用于小型薄壁部件状结构的新型高频测试方法，该方法可在7–8天内进行高达1e9个循环的疲劳测试。振动器在 共振频率附近激发设计的薄壁样品（最小0.1 mm），并且非接触式相对位移测量允许设置定义的缺口应力。计算和实验确定的谐振频率偏离最大值。 降低了-1.9％。此外，振动和温度测量证明了该技术的稳定性，没有检测到样品的自热。使用X5CrNiCuNb16-4钢进行的验证测试表明，该材料具有典型的SN行为，因此裂纹始终会出现在预期的缺口中。