2) corrosion fatigue crack
腐蚀疲劳裂纹
1.
The microanalysis results show that the inclusions in weld metals, welding residual stress, working stress,mechanical vibrating stress and electrochemical corrosion of metal caused the penetration corrosion fatigue cracks in weld metals and its heat affect zones of hydraulic turbine blades.
水轮机叶片上的焊缝及其热影响区常发现有穿透性的裂纹,微观分析结果表明焊缝中存在夹杂物,在焊接残余应力、工作应力、机械震动应力和电化学腐蚀的共同作用下,造成水轮机叶片的焊缝及其热影响区形成穿透性的腐蚀疲劳裂纹。
2.
Under fatigue load and corrosion medium,corrosion fatigue crack appeared first at the bottom of thread which was the dangerous section part of the pin joint.
结果表明:加重钻杆断裂属于腐蚀疲劳断裂;断裂主要原因是加重钻杆接头内径大于标准规定值,降低了加重钻杆外螺纹接头断裂扭矩和抗拉载荷,在疲劳载荷与腐蚀介质作用下,腐蚀疲劳裂纹首先在加重钻杆外螺纹接头危险截面部位螺纹牙底萌生,随后在载荷作用下裂纹不断扩展,进一步降低了接头的强度,最终发生了断裂事故。
3) corrosion fatigue cracking
腐蚀疲劳纹裂
4) fatigue crack propagation
疲劳裂纹扩展
1.
Effect of laser surface melting on fatigue crack propagation of eutectic aluminum silicon alloy;
激光表面熔凝处理对共晶铝硅合金疲劳裂纹扩展的影响
2.
Elastic-plastic fatigue crack propagation under combined torsion and tension;
扭转/拉伸复合载荷下的弹塑性疲劳裂纹扩展行为
3.
Influence of stress ratio R on threshold value △K_(th) of fatigue crack propagation for welded joints of 09CuPCrNi steel;
应力比R对09CuPCrNi钢焊接接头疲劳裂纹扩展门槛值△K_(th)的影响
5) fatigue crack growth
疲劳裂纹扩展
1.
Effect of welding residual stress on fatigue crack growth of the pressure vessel;
焊接残余应力对压力容器疲劳裂纹扩展的影响
2.
Cyclic plasticity and fatigue crack growth threshold;
循环塑性与疲劳裂纹扩展门槛值(英文)
3.
Engineering estimation method of low-cycle fatigue crack growth rate of the pressure vessel;
压力容器低周疲劳裂纹扩展率的工程计算方法
6) fatigue crack growth rate
疲劳裂纹扩展率
1.
The fatigue crack growth rate is the core for predicting fatigue life by use of fatigue crack propagation(FCP) theory.
疲劳裂纹扩展率表达式是采用疲劳裂纹扩展理论预报疲劳寿命的核心。
2.
The effect of the parameter reflecting crack closure development on the fatigue crack growth rate is studied in this paper through the nonlinear least sq.
45w t%碳钢的疲劳试验数据,结合上述材料的力学性能参数,通过非线性最小平方拟合方法,研究了表征裂纹闭合水平参数k对疲劳裂纹扩展率的影响。
补充资料：裂纹失稳扩展
分子式：
CAS号：
性质：材料内部裂纹尖端的应力场强度因子达到或超过材料的断裂韧性之后发生的裂纹快速扩展。裂纹失稳扩展将导致材料迅速断裂。
CAS号：
性质：材料内部裂纹尖端的应力场强度因子达到或超过材料的断裂韧性之后发生的裂纹快速扩展。裂纹失稳扩展将导致材料迅速断裂。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条