Short fatigue crack propagation is much accelerated by filled hydrogen.
充氢条件下，大大加速短裂纹疲劳扩展。
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。
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。
The temperature of duplex annealing has little influence on fatigue crack propagation behavior.
该合金的疲劳裂纹扩展速率对退火温度不敏感。
The fatigue crack propagation rate of the fusion line and weld toe are greater than that of the others.
熔合线和焊趾处疲劳裂纹扩展速率较其他部位大。
The formula of the fatigue crack propagation rate was directly derived from the fatigue damage criterion.
通过疲劳损伤准则，导出疲劳裂纹稳定扩展速率的计算公式。
Fatigue crack propagation in a compressive residual stress field can be characterized with the closure effect.
疲劳裂纹在残余压应力场中的扩展可借助于裂纹闭合力来描述。
The equiaxed structure has good tensile property, low fracture toughness and high fatigue crack propagation rate.
等轴组织具有较好的拉伸性能、低的断裂韧性和高的疲劳裂纹扩展速率；
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。
An automatic compliance crack length measurement system for fatigue crack propagation test was used in the experiments.
研究中应用了一种柔度法疲劳裂纹自动测量系统进行裂纹长度测量。
Dislocation cell and sub grain formed in ferrite grain are found at the stage of fatigue crack propagation in the area of crack tip.
疲劳裂纹扩展阶段裂纹尖端附近为形成于铁素体晶粒内的位错胞及亚晶。
The fatigue crack propagation testing were completed for CT specimens of LZ50 axle steels with continuous casting and mould casting.
完成了连铸和模铸LZ50车轴钢疲劳裂纹扩展试验，得到了两类LZ50车轴钢的疲劳裂纹扩展曲线。
Fatigue crack propagation behaviour under variable amplitude loading is significantly influenced by load history induced sequence effects.
导致加载序列作用的加载历史极大地影响着变幅加载下的疲劳裂纹扩展行为。
Short cracks propagation research: the degree of Microscopic structure influence to the fatigue crack propagation depends on crack length.
短裂纹扩展研究：微观组织结构对疲劳短裂纹扩展的影响程度取决于裂纹的长度。
The fatigue crack propagation rate (FCPR) of as-rolled AM60 in the longitudinal direction is higher than that of the transverse direction.
轧制AM60的横向疲劳裂纹扩展速度（FCPR）明显地高于纵向。
The results show that the equiaxed and bi-modal microstructures have the similar mechanical properties and fatigue crack propagation rate.
结果表明：该合金等轴组织和双态组织的室温力学性能和疲劳裂纹扩展阻抗差别不大；
The process of thermal fatigue crack propagation on the surface of steel bonded carbide GJW35 under the action of thermal stress has been observed.
观察了在热应力作用下gjw35钢结硬质合金表面热疲劳裂纹扩展过程。
The striation spacing in heat affect zone and welded seam samples was wider than that in matrix sample, this shows that fatigue crack propagation...
焊缝区和热影响区试样的辉纹间距较基体区的大，说明裂纹扩展速率快，焊缝和热影响区的抗裂纹扩展性较基体差。
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。
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。
The characteristics of corrosion fatigue crack propagation of X60 pipe steel at different loading frequencies and in different corrosion media were studied.
研究了不同腐蚀介质中及加载频率下x 6 0管线钢的腐蚀疲劳裂纹扩展特性。
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。
Abstract: the process of thermal fatigue crack propagation on the surface of steel bonded carbide GJW35 under the action of thermal stress has been observed.
文摘：观察了在热应力作用下gjw35钢结硬质合金表面热疲劳裂纹扩展过程。
The deformation testing in stress concentration area before fatigue crack propagation plays a crucial role for understanding the fatigue properties of materials.
疲劳裂纹扩展前应力集中区域变形场的测试对材料疲劳性能的研究起到至关重要的作用。
Then the characteristics of frequency variation during the fatigue crack propagation process are simulated by three - dimensional dynamic finite element analysis.
并利用三维动态有限元模拟了点焊接头疲劳裂纹扩展过程中频率变化特性。
Both the numerical analysis and experimental data show that the fatigue crack propagation rate is insensitive to the stress ratio for plain stress thin specimens.
实验结果和模拟结果都表明，该试样厚度下，应力比对裂纹扩展速率几乎没有影响。
Result show that the trace boron additive causes the changes in the mode of fatigue crack propagation and its route, so that crack growth rate of 40MnB is lowered.
结果表明，微量合金元素硼改变了裂纹扩展途径和扩展方式，从而降低了疲劳裂纹扩展速率。
PTAE 4A AE monitor system was developed for monitoring the fatigue crack propagation on aircraft structure. And a study on its practical application was carried out.
为实现飞机结构的疲劳裂纹动态监控，研制了PTAE-4A机载声发射监测系统，并作了随机机载应用研究。
Fracture lines start from the outside and spread over the whole cross section, particularly starting in the fillet area and very often after a fatigue crack propagation.
断裂面从轴承部位外部开始延伸到整个截面。典型的是从圆弧部开始，常常会由于疲劳而产生的裂纹的扩展后引起的。
Fracture lines start from the outside and spread over the whole cross section, particularly starting in the fillet area and very often after a fatigue crack propagation.
断裂面从轴承部位外部开始延伸到整个截面。典型的是从圆弧部开始，常常会由于疲劳而产生的裂纹的扩展后引起的。
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