1)fatigue crack initiation疲劳裂纹萌生
1.Study on fatigue crack initiation and propagation of cast aluminum alloy A356;A356铸造铝合金的疲劳裂纹萌生及短裂纹扩展研究
2.Cyclic stress response behavior, fatigue crack initiation and propagation behavior and (corresponding) fracture characteristics of magnesium alloys under fatigue loading condition are summarized.简要介绍了镁合金在疲劳加载条件下的循环应力响应行为、疲劳裂纹萌生与扩展行为以及疲劳断裂的微观特征,分析了镁合金的显微组织、冶金和表面状态等材料内在因素以及环境、温度等外部因素对镁合金的疲劳强度、疲劳寿命、疲劳裂纹扩展速率的影响规律,指出了机械抛光、喷丸处理、表面滚压等表面机械加工方法以及适当的热处理均可有效地提高镁合金的疲劳强度和疲劳寿命。
3.It was found that the grain boundaries are the preferred sites for fatigue crack initiation in the fatigued bicrystals.在滑移带撞击晶界的地方，特别是在几条粗滑移带共同撞击晶界的地方观察到许多疲劳微裂纹；并且发现与平行晶界双晶相比，垂直晶界双晶中极有利于疲劳裂纹沿晶界作早期扩展一种PSB－GB疲劳裂纹萌生机制可用来解释这些沿晶疲劳裂纹的形成。
英文短句/例句
1.EFFECT OF SURFACE HARDENING ON FATIGUE CRACK INITIATION AND PROPAGATION IN NODULER CAST IRON表面强化对球铁疲劳裂纹萌生、扩展的影响
2.Research on the Fatigue Crack Initiation and Propagation of 16Mn Steel Welded Structure;16Mn钢焊接件疲劳裂纹萌生与扩展的研究
3.The Microstructure and Fatigue Initiation of an AA2524-T34 Aluminum AlloyAA2524-T34铝合金的微观结构与疲劳裂纹萌生机制
4.Initiation Mechanics of Fatigue Crack at Weld Joint of High Strength Bridge Steel高强度桥梁钢焊缝疲劳裂纹萌生机理的研究
5.Analysis of Major Influencing Factors of Rolling Contact Fatigue Crack Initiation Life of Rails影响钢轨疲劳裂纹萌生寿命的主要因素分析
6.The Crack Initiation Prediction and Analysis of Rolling Fretting Fatigue Based on the Mindlin Theory采用Mindlin理论预测分析滚动微动疲劳裂纹萌生
7.THE INITUTION AND PROPAGATION OF THE VIBRATION FATIGUE CRACK IN SINTERED STEEL UNDER REPEATED IMPACT LOAD多次冲击载荷下粉末冶金热锻钢的振动疲劳裂纹萌生、扩展与断裂
8.The Defination and Probability Model of Low Cycle Fatigue Crack Initial Life for 16MnR Pressure Vessel Steel;16MnR钢的低周疲劳裂纹萌生寿命及其概率统计模型的研究
9.Sensitivity Analysis of Mechanical Parameters of Rail to Fatigue Crack Initiation Life钢轨材质参数对疲劳裂纹萌生寿命影响的敏感性分析
10.Simulation for Short Fatigue Cracks Initiation of LZ50 Axle Steel for Railway VehiclesLZ50车轴钢疲劳短裂纹萌生的数值模拟
11.Fatigue Reliability Analysis and Crack Initiation Micromechanism for 42CrMo Steel;42CrMo钢疲劳可靠性分析与裂纹萌生微观机理研究
12.Evaluation on Fatigue Damage of Guyed Mast s Ear-plate;桅杆结构拉耳裂纹萌生的疲劳损伤评定
13.Study on Initiation and Propagation of Short Crack for Low Cycle Fatigue at High Temperature and Complex Stress States;复杂应力状态下高温低周疲劳短裂纹萌生及扩展规律研究
14.Mechanism on crack initiation and propagation of rail under rolling contact fatigue滚动接触疲劳作用下的铁轨裂纹萌生与扩展机理
15.The results show that the thermal fatigue cracks after forming propagate preferentially in the hard phase, and the propagation of crack is stoped and dulled when it meet steel basic phase.结果表明:萌生后的热疲劳裂纹优先在硬质相中扩展,遇到钢基体相后受阻、化。
16.It was found that the initial fatigue crack nucleated at the cross edge of the hole and surfaces of the specimen by sliding.试验结果表明 ,疲劳裂纹以滑移方式在孔壁与试样表面相交的棱上萌生 ;
17.Simulation of Structure Fatigue Crack Initiation and Growth;结构疲劳裂纹产生与扩展的计算模拟
18.Thermal Fatigue Behavior of Single-Crystal Superalloy单晶高温合金的冷热疲劳裂纹生长行为研究
相关短句/例句
fatigue crack initiation and propagation疲劳裂纹萌生及扩展
1.SEM in situ observations for the effects of inclusions on the fatigue crack initiation and propagation behaviors of super strength steel indicate that the inclusion size and shape affect not only on the fatigue crack initiation location but also on the crack growth behavior.采用扫描电镜原位观测了数微米大小夹杂物对超高强度钢疲劳裂纹萌生及扩展的影响,并用有限元法解释了夹杂物尺寸 和形状对疲劳裂纹萌生及初期扩展的影响程度,得到了超高强度钢低周疲劳裂纹萌生与扩展特性和夹杂物对疲劳破坏的关键尺寸的 估计值。
3)Fatigue crackle sprouting and its extending疲劳裂纹的萌生及扩展
4)Fatigue crack initiation location疲劳裂纹萌生位置
5)Thermal fatigue crack initiation and propagation热疲劳裂纹的萌生与扩展
6)distinguishing factor for fatigue crack initiation site疲劳裂纹萌生位置判别因子
延伸阅读
疲劳裂纹生长分子式：CAS号：性质：材料在连续交变应力作用下，会在其表面逐渐生成裂纹，并随着作用时间而逐渐向纵深发展，使裂纹扩展，试件的力学性能下降，最终导致完全断裂。应该指出，有些材料耐初始裂纹生长的性能很好，但一旦生成却发展很快。而另一些材料就正好相反。所以对疲劳裂纹的生成和发展是疲劳试验中最关心的性状之一。
