The research of dynamic propagation of crack is prevalent in explosion mechanics.
爆炸裂纹的动态扩展问题是爆炸力学研究的热点。
The propagation of crack in tungsten skeleton is blocked by amorphous and the tungsten skeleton restricts the flow of amorphous.
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 results indicated that potential scan rate and step frequency played an essential role in the initiation and propagation of crack.
结果表明，电位扫描速度和电位阶跃频率对裂纹萌生与扩展有显著影响。
Coarsening grain and intercrystalline network ferrite depress crack growth resistance of the materials strongly and result in unstable propagation of crack very easily.
晶粒粗大及晶间网状铁素体强烈降低材料的裂纹扩展阻力，并极易导致裂纹的失稳扩展。
It is shown that the zigzag grain boundary may delay the initiation, growth and propagation of crack, as well as may also influence the crack morphology and the fracture mode markedly.
研究表明，弯曲晶界对裂纹的萌生、长大及扩展，对裂纹的形态及断裂方式，都有显著的影响。
The results show that the thermal fatigue cracks after forming propagate preferentially in the hard phase, and the propagation of crack is stoped and dulled when it meet steel basic phase.
结果表明：萌生后的热疲劳裂纹优先在硬质相中扩展，遇到钢基体相后受阻、钝化。
Meanwhile, the influences of pipeline internal pressure, wall thickness, crack arrest length and initial crack velocity on the crack driving force (crack propagation) are further studied.
进而分析了管道内压、壁厚、裂纹止裂长度和初始裂纹速度对裂纹驱动力(也即裂纹扩展)的影响。
A new idea that the distribution movement of electric charge in the crack tip end being associated with rock fracture propagation produces electromagnetic emission was brought up.
本文提出了岩石破裂时的电磁辐射是裂纹尖端电荷随着裂纹加速扩展运动所产生的假说。
Quenching crack propagation characteristics of the organizations on both sides without decarburization phenomenon significant difference between crack and materials and forging cracks.
淬火裂纹的组织特征是裂纹两侧无脱碳现象，明显区别与锻造裂纹和材料裂纹。
The fatigue properties were researched and found that the crack propagation velocity and the decline of rigidity were related to the maximum cycle stress.
通过对其疲劳性能的实验研究，发现裂纹扩展速率的大小及刚度的下降与加载的最大循环应力密切相关的规律。
The results showed that for the same material and the same iodine concentration, the rate of crack propagation increased with increasing temperature.
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 origination and propagation of fatigue crack in materials under variable load is the main style of failure.
疲劳裂纹的萌生和扩展是材料在变载荷作用下的主要失效形式。
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。
The propagation rate of crack also decreases with increasing the binder content of cermets.
随着金属陶瓷中金属相含量的增加，裂纹扩展速率降低。
The metastable propagation rate of crack is approximately a constant in a certain size range.
在一定尺寸范围内，裂纹的亚稳扩展速率近似是常数。
It is indicated that retained austenite in microstructure can inhibit the initiation and propagation of fatigue crack, improve the resistance to impact fatigue and decrease impact fatigue wear.
试验得出，残余奥氏体可阻止疲劳裂纹的萌生和扩展，提高冲击疲劳抗力，降低冲击疲劳磨损。
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 crack propagation characteristics of X70 pipeline steel in the synthetic soil solution under cyclic loading are investigated.
试验研究了X70管线钢在模拟土壤介质中，循环载荷下的裂纹扩展特性和宏观规律。
Objective To investigate the cause and process of crack generation and propagation in fretting wear of bone and to study the fretting wear mechanism between prostheses and bones.
目的探索骨组织在微动过程中裂纹产生和扩展的原因及过程，弄清假体-骨组织界面微动磨损的机理。
The strain energy release rate of the crack propagation was calculated by using virtual crack closure technique, and fatigue life was forecasted.
采用虚拟裂纹闭合技术计算裂纹扩展的应变能释放率，并对裂纹扩展寿命进行计算。
The oxidation degree of grain boundaries and crack propagation are qualitatively analyzed based on crack density and percentage of intergranular crack.
用裂纹密度和晶界裂纹的比例对晶界氧化的程度及裂纹扩展情况定性地加以分析。
Based on status in quo of the interface crack propagation of the isotropic bi - material, the exiting problems and the tendency of the research are proposed.
在对各向同性双材料界面裂纹扩展研究现状进行综述的基础上，提出了目前研究存在的问题以及今后的研究趋势。
The results have shown that the incubation period of crack nucleation decreases and the propagation rate of crack increases with increasing the cyclic temperature.
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 propagation process of indentation crack in air of different relative humidity(2%, 30%, 98%) for a poled PZT-5 ferroelectric ceramic was investigated.
在不同湿度（2%、30%、98%）的空气中，研究了极化的锆钛酸铅（PZT-5）铁电陶瓷压痕裂纹在残余应力、电场作用下的滞后扩展。
By the application of complex functions theory, the dynamic crack propagation problems under the condition of anti-plane were investigated.
采用复变函数论，对反平面条件下的动态裂纹扩展问题进行研究。
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。
According to the mode of crack propagation the mechanism of crack initiation and propagation was also discussed.
根据裂纹扩展方式的变化，对氢致裂纹萌生和扩展机制进行了讨论。
The results showed that manufacturing defects of the bolt resulted in initiation and propagation of fatigue crack, and uneven loading of the bolt speeded up failure process of fatigue fracture.
确认螺栓机加工不当引起疲劳裂纹的萌生及扩展，加之螺栓受力不均匀加速了疲劳断裂过程。
The results showed that manufacturing defects of the bolt resulted in initiation and propagation of fatigue crack, and uneven loading of the bolt speeded up failure process of fatigue fracture.
确认螺栓机加工不当引起疲劳裂纹的萌生及扩展，加之螺栓受力不均匀加速了疲劳断裂过程。
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