- 疲劳断裂的循环次数
- 疲劳破坏循环
- 疲劳破坏周期数
- 疲劳损坏的循环数
- 无故障使用次数
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cycles to failure中文什么意思
例句与用法
- Thus, for any given stress, the number of expected cycles to failure can be found .
因此，对于任何一个给定的应力，就可以求出发出破坏的预定的循环次数。 - Corrosion of metal and alloys - corrosion fatigue testing - cycles to failure testing
金属和合金的腐蚀.腐蚀疲劳试验.失效试验周期 - Corrosion of metals and alloys - corrosion fatigue testing - part 1 : cycles to failure testing
金属与合金的腐蚀.腐蚀疲劳试验.第1部分:失效试验周期 - Zhang liji ( material physics and chemistry ) directed by professor xie xiaoming this paper is intended to solve problems for those who are designing , using pbgas . failure mechanism , as well as cycles to failure of two groups of pbga samples ( with / without underfill ) for thermal cycling conditions in the range of - 40 ~ 125 , were presented . the experiment shows that solder ball in the samples without underfill cracked after 500 times cycle , no crack was found in the underfilled samples even after 2700 cycles
通过一系列的实验，得到以下实验结果： ?在本论文设定的温度循环条件下，未充胶pbga样品的热疲劳品寿命在500周左右，充胶样品的焊点寿命高于2700周； ?对于未充胶器件，中心距( dnp )是决定焊点应力、应变大小的最主要因素，裂纹总是从中心距较大处萌生并向中心处扩展； ?温度循环的过程中焊盘附近焊料组织明显粗化。