扩展速率与J积分有线性关系。
裂纹扩展速率随热循环的进行逐渐减小。
Thecrack propagating rate decreases when the thermal cycles increase.
熔合线和焊趾处疲劳裂纹扩展速率较其他部位大。
The fatigue crack propagation rate of the fusion line and weld toe are greater than that of the others.
在一定尺寸范围内，裂纹的亚稳扩展速率近似是常数。
The metastable propagation rate of crack is approximately a constant in a certain size range.
随着金属陶瓷中金属相含量的增加，裂纹扩展速率降低。
The propagation rate of crack also decreases with increasing the binder content of cermets.
钢中的白点能增加疲劳扩展速率并使扩展速率发生波动。
The flaking do increases and undulates the fatigue crack growth rate.
依据分析给出化学短裂纹扩展速率与裂纹尺寸之间的关系。
Based on the analysis, the relation between the short crack propagation rate and crack size has been put forward.
给出了840d车轮辐板孔平均裂纹扩展速率的计算公式。
The formula for calculating the average crack growth rate of 840d wheel web hole is presented.
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。
The formula of the fatigue crack propagation rate was directly derived from the fatigue damage criterion.
用得到的腐蚀动力学规律，可确定铝合金构件的腐蚀扩展速率。
According to the corrosion dynamics law obtained in this research, the corrosion rate of the structural materials were determined.
同时分析了材料刚度衰减对疲劳裂纹扩展速率和扩展长度的影响。
The impact of the material constant and the degradation of elastic modulus are analyzed.
结果表明，该近似表达式适用于A型腐蚀疲劳裂纹扩展速率的计算。
The given calculating example shows that the expression has a better applicability for the crack propagation rate of type A.
指出声发射率主要受裂纹扩展速率控制，此结论亦得到了实验的证实。
A conclusion that the acoustic emission rate depends mainly on the crack propagation rate is also verified by experiments.
本文研究了SCT试样高应变区的疲劳裂纹闭合效应和疲劳裂纹扩展速率。
The fatigue crack closure and fatigue crack growth rate in the high strain region of SCT specimen are studied.
反之，易破碎的粒子则增加了裂纹尖端的扩展应力，提高了裂纹扩展速率。
On the contrary, the easily broken particles enhance the extension stress at the crack tip, and hence the propagation rate of the crack.
对多种碳素钢在拉伸压缩和旋转弯曲负载下的微小裂纹扩展速率进行了研究。
A study has been done over the small crack growth rate for kinds of carbon steels under push pull and rotating bending.
叶片干重的绝对增长速率动态和叶面积的绝对扩展速率动态为正-负单峰型。
The trends of absolute increasing rate of LW and absolute expanding rate of leaf area (LA) were represented by positive-negative single-peak curves.
随循环温度和冷却速率的增加，裂纹形核的孕育期缩短，裂纹扩展速率增加。
The incubation period of crack nucleation decreases and the crack propagation rate increases with the increase of thermal cycling temperature and cooling rate in the cycle.
定义裂纹深度扩展速率发生转折时对应的疲劳荷载的次数为鱼鳞伤萌生寿命。
The times of fatigue loads at turn over point is defined as the initial life of corner fine .
本文研究了淬火温度对4330M钢在蒸馏水中的应力腐蚀裂纹扩展速率的影响。
The effect of quenching temperatures on the rate of stress corrosion crack propagation of 4330M steel in distilled water has been investigated.
在此基础上，建立了腐蚀环境下疲劳裂纹扩展速率试验中裂纹长度的自动检测技术。
On the basis of this, an automatic measurement technique of fatigue crack length in fatigue crack growth rate test under corrosive circumstance is established.
试验结果表明，随着循环温度的增高，裂纹形核孕育期缩短， 裂纹扩展速率增大；
The results have shown that the incubation period of crack nucleation decreases and the propagation rate of crack increases with increasing the cyclic temperature.
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。
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.
结果表明，稀土能推迟裂纹萌生的时间，降低裂纹扩展速率，提高其冲击疲劳抗力。
The experimental results show that adding rare earth into cast semi steel can defer the time of forming fatigue crack, reduce the speed of crack propagating and increase the impact fatigue resistance.
实验结果表明，三种介质中，裂纹在煤油中扩展速率最低，水中裂纹扩展速率最大。
Experiment results show that. in the three medium, crack growth velocity is minimum in oil, crack growth velocity is maximum in water.
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.
应用二维单侧容限系数公式，提出了一种测定金属材料疲劳裂纹扩展速率的小样本方法。
A small sample method for testing fatigue crack growth rate curve of steel was presented in this paper using a formula of two-dimensional one-side tolerance factor.
主要研究侧槽试样与平板试样裂纹扩展速率之间的关系，并建立了两者关系的效学表达式。
The relationship of crack growth rate between lateral notch specimen and plane plate specimen was studied in this paper. A formula for the relationship was established.
气化工作面扩展速率在供风点附近出现最大值，变化平稳，瘦煤地下气化具有较高的稳定性。
The gasification face development rate of the test coal changes gently in underground gasification process, which indicates that the underground gasification of lean coal has high stability.
气化工作面扩展速率在供风点附近出现最大值，变化平稳，瘦煤地下气化具有较高的稳定性。
The gasification face development rate of the test coal changes gently in underground gasification process, which indicates that the underground gasification of lean coal has high stability.
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