fatigue crack的例句大全

The affection of fatigue and creep to the crack growth must be considered when LBB is applied on the nuclear pipes in the high temperature reactors ( as fast reactor) beyond the creep temperature.

对于在蠕变温度以上高温堆（如快堆）的核级管道，运用LBB分析时应该考虑疲劳和蠕变对裂纹扩展的影响。

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A Generalized Formula for Fatigue Crack Propagation,-A New Method for Determining Δ Kth

一个普遍的疲劳裂纹扩展公式&确定ΔK（th）的新方法

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The fatigue crack growth under the random loads is described by a time discrete Markoff process.

齐次马尔可夫模型可以用于描述伪随机谱载荷下的裂纹扩展的随机过程。

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The rolling contact fatigue life was found to be markedly related the subsurface crack propagation angle.

理论分析和试验结果表明,接触疲劳寿命与次表面裂纹扩展角之间存在着明显的对应关系.

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Fatigue Crack Propagation of Steel 980 Welded Joint under Spectrum Load

980钢焊接接头在谱载荷作用下的疲劳裂纹扩展

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Investigation on the shaft neck fatigue crack of helicopter rotor hub

直升机旋翼桨毂轴颈疲劳裂纹探讨

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The Low-Cycle Fatigue Crack Growth Rate and Ductile Fracture Toughness for BHW 35 Steel

BHW35钢低周疲劳裂纹扩展速率和延性断裂韧度

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Therefore, it is necessary to reasonably decreasing the cool rate after welding process for improving the ability of anti-fatigue crack initiation in the weld heat affected zone. 5.

因此在焊接时适当地降低热影响区的冷却速度，可以使焊接热影响区获得更优的抗疲劳裂纹萌生能力。

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The results shown that the different zones of butt joints have different fatigue crack propagation rate. The average load, welding residual stress and the microstructures influenced the propagating rate of fatigue crack.

结果表明，焊接接头的不同部位疲劳裂纹扩展速率不同，平均应力、焊接残余应力、金相组织对疲劳裂纹的扩展速率都有一定的影响。

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A new technique by computer has been used to trace fatigue growth of surface crack of out corner of cylindrical pressure vessel nozzles by using the methods of 1/ 4 displacement and finite element.

运用1/4点位移法和有限元技术对圆筒型容器接管外拐角表面裂纹扩展时应力强度因子的变化作了计算机数值跟踪。

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Finite Element Method to Tracing the Fatigue Growth of Surface Crack of Out corner of Cylindrical Pressure Vessel Nozzles

圆筒型容器接管外拐角表面裂纹疲劳扩展的有限元跟踪

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Positions and process of fatigue crack initiation in welded construction

焊接结构中疲劳裂纹形成位置与过程

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Removing or damaging the shot-peened layer can reduce the protection that this compressive layer provides against fatigue and stress corrosion crack initiation.

喷丸压缩层的改变或损坏会降低压缩层抵抗疲劳和应力腐蚀裂纹的保护性。

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Effect of hydrogen on fatigue crack propagation in bond weld fusion zone

电解充氢对堆焊熔合区疲劳裂纹扩展行为的影响

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An investigation of the effects of mean and alternating stresses on short fatigue crack growth under uniaxial loading is reported.

本文报道单向加载下平均应力和交变应力对疲劳短裂纹生长的影响。

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Fatigue lifetime of valve springs contains two parts: lifetime crack initiation and another for crack propagation.

疲劳寿命一般包括疲劳裂纹萌生寿命和裂纹扩展寿命两部分.

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The results show that the life of fatigue is increased remarkably, the period of crack initiation is delayed and the propagation rate of crack is decreased after RE N C B diffusion of the steel.

结果表明，稀土氮碳硼共渗处理后，45钢疲劳寿命显著提高，裂纹形成延迟，裂纹扩展速度降低。

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The low-cycle fatigue crack growth rate of BHW 35 steel was measured for two specimen geometries, three cyclic strain raties and two orientations cf the crack plane.

本文对BHW35钢进行了两种几何形状试样、三种应变比和两种裂纹面取向条件下的低周疲劳裂纹扩展速率测定；

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The experimental results show that by combining rare earth modification with heat treatment the eutectic carbide network changes into carbide piece and precipitation of granular carbide are accelerated as a result deferring crack forming time and reduce crack propagation speed and increase the impact fatigue resistance effectively.

结果表明：稀土与热处理复合作用，可加速网状共晶碳化物向孤立块状的转变，促进粒状碳化物的析出，有效地推迟裂纹产生的时间，降低裂纹扩展速率，提高其冲击疲劳抗力。

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Fatigue Crack occurs under repeated action of load, features map cracking with longitudinal crack ( generally deformation is not distinguished), and occurs mainly late in the service life of pavements.

荷载作用产生的裂纹主要是指荷载反复作用引起的疲劳裂纹。

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