建立了概率模型表达短裂纹的扩展。
A probabilistic model is developed in this article to express the propagation of short cracks.
应力强度因子随着裂纹的扩展而下降。
The intensity factor decreases with the propagation of cracks.
使用一种增量迭代法求解裂纹的扩展过程。
An increment iteration method is used to solve the crack propagation problem.
结果表明两种测试方法均可表征裂纹的扩展。
The results showed that Kelvin and EN could get the same judgment that its cracking propagated.
研究结果表明，稀土夹杂物减缓了裂纹的扩展。
The results show that the modification of inclusions can slower crack propagation.
同时，焊接应力的存在和水质不良加速了裂纹的扩展。
Besides, the welding stress and wicked water accelerate the crack growth.
爆炸气体对裂纹的产生和已有裂纹的扩展具有重要的影响。
Gas of explosion produce has important affect on producing and expanding of crack.
BN的编织状结构可以缓冲热震应力，阻碍热震裂纹的扩展。
It is considered that BN interwoven structure can reduce some thermal shock stress and prevent crack propagation due to thermal shock.
随着裂纹的扩展，裂纹扩展速率由于裂纹面的滑移接触而减小。
The crack growth rate was decreased with crack extension because of the sliding contact of the crack faces.
岩体裂纹的扩展引起岩体渗透系数的增加，导致渗流场的改变。
The cracks growth induce the increase of permeability coefficient, ultimately the change of seepage field.
在裂纹较小阶段，疲劳小裂纹的扩展受显微组织与多相界的影响。
When the crack is small, the fatigue crack growth is obviously influenced by microstructure features and multiple phase boundaries.
进行了恒幅谱载荷及程序块谱载荷下加筋板多裂纹的扩展试验研究。
Experimental studies for crack growth of stiffened panels with multiple cracks were performed under both constant-amplitude load and program block spectrum load.
冷凝器铜管的工作环境使疲劳极限大为降低，加剧了疲劳裂纹的扩展。
The fatigue limit of condenser copper tube was reduced by working condition which aggravated the spread of crack.
本文研究在随机载荷作用下，管状杆件焊接部位裂纹的扩展及断裂问题。
This paper is devoted to the problems concerning the propagation and fracture of the cracks on the welds of the tubes under the random load conditions.
通过分析表明，压应力对裂纹尖端塑性区和疲劳裂纹的扩展有显著的影响。
The analysis shows that the compressive loading has a significant contribution towards the crack tip plasticity and the fatigue crack growth.
编制了有限元程序CCGC - 1以模拟计算高温材料蠕变裂纹的扩展。
A finite element program CCGC-1 is compiled to simulate the creep crack growth rate in materials working at elevated temperature.
结果表明，预制裂纹的倾角和岩桥倾角对裂纹的扩展和搭接有重要的影响。
It is concluded that the geometry of pre-existing cracks has great influence on the crack propagation and coalescence.
非晶相阻碍了钨骨架中裂纹的扩展，钨骨架抑制了非晶相中大面积流变的发生。
The propagation of crack in tungsten skeleton is blocked by amorphous and the tungsten skeleton restricts the flow of amorphous.
为预测缺口裂纹对加工表面形成的影响，研究了切削脆硬材料时缺口裂纹的扩展。
In order to predict effects on machined surface by developed notch-crack, crack extension mechanism of notch-crack-tip was investigated in cutting brittle materials.
由于奥氏体的隔离作用，裂纹的扩展得到有效抑制，其热疲劳性能得到大幅提高。
Due to the isolating effect of the austenite the expanding of the crack would be hindered efficiently, so the thermal fatigue property of the alloy was largely increased.
结果表明，界面两侧材料的弹塑性失配对复合板面裂纹的扩展驱动力具有重要影响。
The results indicate that, the elastic-plastic mismatch of components has significant influence on the near-tip "driving force" of fatigue crack growth.
采用对比分析方法，从疲劳裂纹的门槛值角度出发，归纳总结了疲劳裂纹的扩展规律。
In contrast with the threshold of fatigue cracks, a series of regulation of expanding of fatigue small cracks has been deduced.
结果表明：对于同种材料在相同的碘浓度下，随着温度的升高，裂纹的扩展速率加快。
The results showed that for the same material and the same iodine concentration, the rate of crack propagation increased with increasing temperature.
分析结果表明，非线性阶段CT尺度裂纹的扩展和变形对混凝土强度和变形有决定性影响。
It is concluded that the expansion and deformation of cracks in CT scale play decisive roles influencing the strength and deformation of concrete in nonlinear stage.
管道裂纹的扩展速度主要取决于管道钢的转变温度FATT。FATT可由落锤撕裂试验测定。
The crack propagation rate of pipes is mainly dependent on FATT of Steels of pipes (fracture appearance transition temperature). And FATT can be measured by drop weighted tear tests.
虽然裂纹源很难避免，但如果能够阻止裂纹的扩展，也能够防止钻杆内螺纹接头纵向开裂失效。
Although it is hard to avoid the sources of fracture, the longitudinal fracture failure on the box joint can be prevented if proper measures are taken to prevent further extension of the fracture.
只有小裂纹扩展到足够长并钝化到足够宽，才能够影响主裂纹的扩展及其前端应力、应变的分布。
Only if this short crack extends long enough and blunted wide enough, can it affect the principal crack extension and the distribution of stress and plastic strain.
采用锌阳极和铝阳极的防止腐蚀方法虽能防止铬钼钢腐蚀，但对其裂纹的扩展起明显的加速作用。
The Zinc and Aluminum anode protector can prevent the Cr-Mo steel from corrosion. However, it has the obvious effect of accelerating the crack propagation.
本文在大量的实验和理论分析的基础上，研究了银基触头材料表面的形变现象—裂纹的扩展机理。
The mechanisms of crack propagation and the surface deformation phenomenon of silver-based contact materials are investigated based on experiments carried out and theoretical analysis in this paper.
本文在大量的实验和理论分析的基础上，研究了银基触头材料表面的形变现象—裂纹的扩展机理。
The mechanisms of crack propagation and the surface deformation phenomenon of silver-based contact materials are investigated based on experiments carried out and theoretical analysis in this paper.
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