The mechanical properties of the butt welded joints have been evaluated according to the impulsive and fracture toughness as well as the rate and threshold values of fatigue crack propagation.
根据试验测定的焊缝各区冲击韧性、断裂韧性、疲劳裂纹扩展速率和疲劳裂纹扩展门槛值，对焊缝力学性能作出综合评价。
A distribution function of two dimensional threshold is given for fatigue crack propagation. A two dimensional stress threshold interference model is set up.
本文给出二维疲劳裂纹扩展门槛值分布函数，建立二维应力—门槛值干涉模型。
A distribution function of two dimensional threshold is given for fatigue crack propagation.
本文给出二维疲劳裂纹扩展门槛值分布函数，建立二维应力—门槛值干涉模型。
This paper presents a review of the characteristics and mechanisms of fatigue crack propagation(FCP)at near-threshold range in various metals and alloys.
本文回顾了各种金属及合金在门坎区附近的疲劳裂纹扩展的机制和特征。
This paper presents a review of the characteristics and mechanisms of fatigue crack propagation at near-threshold range in various metals and alloys.
本文回顾了各种金属及合金在门坎区附近的疲劳裂纹扩展的机制和特征。
Tempering temperature remarkably affect the threshold value of fatigue crack propagation.
回火温度对该钢的疲劳裂纹门槛值影响显著。
Tempering temperature remarkably affect the threshold value of fatigue crack propagation.
回火温度对该钢的疲劳裂纹门槛值影响显著。
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