gigacycle

Gigacycle fatigue of ultra-high strength steels

超高强度钢十亿周疲劳研究

To clarify the subsurface crack initiation mechanism in gigacycle fatigue , several alloy steels were tested at very high numbers of cycles through ultrasonic accelerated fatigue test at 20 kHz .

通过20kHz压电超声加速疲劳试验机对多种金属材料进行测试，实验地证明了超高周疲劳裂纹往往从试件内部萌生的机制。

The test equipment , installation and test principle of gigacycle friction fatigue were introduced in this paper , On the basis of the fatigue test apparatus of 20 KHz ultrasonic vibration , the frequency value , the dimension calculation formulas and the specific shape of the specimen were given .

介绍了高周摩擦疲劳试验设备、装置及试验原理根据20000Hz超声波震动疲劳试验机的要求，给出了试件的频率值、尺寸计算、公式和具体形状；