基于两参数Weibull模型的预腐蚀2A12铝合金材料裂纹萌生寿命评估--环境技术 关键字： 铝合金；Weibull模型；裂纹萌生 [gap=898]Key Words： aluminum alloy; Weibull model; crack initiation
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Fatigue can be studied with fracture mechanics and life can be evaluated from crack initiation, extension and fracture.
疲劳破坏的研究可以从断裂力学入手,从裂纹萌生、扩展与断裂三个阶段进行寿命的评估。
参考来源 - 铁磁性材料拉伸疲劳的磁记忆信号研究The thesis concentrates on the micro fatigue crack growth behavior and fracture mechanism considering the effects of different sizes and different types of inclusions.
主要研究了的微观、瞬态时夹杂物附近裂纹生长行为和断裂机理。 试验中不仅考察不同形状,大小夹杂物对超高强度钢的裂纹萌生与扩展行为的影响,还研究了不同载荷类型下的裂纹萌生与扩展行为,尤其是疲劳载荷下的夹杂物对疲劳裂纹萌生与扩展的影响。
参考来源 - 夹杂物对超高强度钢微观破坏机制的研究Fatigue analysis covers three side : total life analysis、crack grown and crack expansion. At last an improving method is given by the analysis of track base as well as the life data.
疲劳分析综合了全寿命分析、裂纹萌生分析和裂纹扩展分析三个方面,最终给出了轨座相关的寿命数据,并根据分析结果提出了改进意见。
参考来源 - 采煤刮板输送机轨座的疲劳分析The mean life of crack initiation and its lower limit of unilateral believable degree under the believable degree level 95%were obtained by applying this method to analyze the fatigue testing data.
根据该方法对试验样本疲劳数据进行处理得出了裂纹萌生中值寿命及其在95%置信水平下的单侧置信下限。
参考来源 - 复杂飞机结构裂纹萌生寿命确定的工程方法·2,447,543篇论文数据，部分数据来源于NoteExpress
结果表明， 裂纹萌生是由较大的第二相颗粒引起的。
The results shows that crack initiation induced by particles of additives or fillers.
研究了A356铝合金在冲击载荷作用下的裂纹萌生及其扩展过程。
Crack initiation and propagation process in A356 aluminium alloy under impact load have been investigated.
根据裂纹扩展方式的变化，对氢致裂纹萌生和扩展机制进行了讨论。
According to the mode of crack propagation the mechanism of crack initiation and propagation was also discussed.
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