gigacycle

1. 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。
2. Gigacycle fatigue of ultra-high strength steels
   超高强度钢十亿周疲劳研究
3. 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；

noun

1. 1,000,000,000 periods per second

   Synonym:    gigahertzGHzgigacycle per secondGc