借用损伤机制描述裂纹扩展规律。
The crack propagation law is described using damage mechanism.
对现行的两种多裂纹扩展算法作了改进。
We present the improvement of two existing algorithms of multiple crack growth.
通常，部件承载后，氢脆裂纹扩展迅速。
Typically, hydrogen embrittlement cracks propagate rapidly once loads are applied to the part.
旋转弯曲疲劳强度是抗裂纹扩展能力的判据。
The rotating bending fatigue strength is the criterion of resistance to propagation of hot cracks.
本试验也得到了材料的裂纹扩展速度和撕裂模量。
Crack speed and tearing modules for the material are also obtained.
通过快速裂纹扩展发生断裂，没有明显的宏观变形。
Brittle fracture. Fracture that occurs by rapid crack propagation and without appreciable macroscopic deformation.
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.
裂纹缺陷周围的应力变形场是影响裂纹扩展的重要因素。
The stress field near crack tip is an important factor to effect crack extension.
进行了腐蚀环境下航空材料裂纹扩展的自动测量技术研究。
Crack length measurement technique, which used for aeronautical materials under corrosive environment, has been studied in this paper.
提出一种用非连续变形分析方法模拟岩石裂纹扩展的方法。
An approach for modeling rock crack propagation using discontinuous deformation analysis (DDA) method is presented.
从选材角度对比分析了几种铝合金的动态断裂韧性及裂纹扩展阻力。
From the view point of material selection, we analyzed their dynamic fracture toughness and crack propagation resistance.
裂纹扩展曲线的建模是基于概率断裂力学的耐久性分析方法的前提。
Modeling of crack growth curve is the premise of the durability analysis based on probabilistic fracture mechanism.
在应力比，残余应力对疲劳裂纹扩展的影响方面获得了有价值的成果。
We get valuable results about the effect of the stress ratio and residual stress on fatigue crack growth.
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 fatigue crack growth rate is the core for predicting fatigue life by use of fatigue crack propagation (FCP) theory.
科拉尔博士推测，那种裂纹扩展为三个维度使能量消散的更快，制止了缺陷的扩展。
Dr Corral suspects that extending cracking into the third dimension dissipates the energy faster and stops the fault spreading.
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.
如不成立，那么，玻璃材料在双轴应力状态下的裂纹扩展由什么参数决定？
If not existing any more, then what is the parameter of crack extending when glass in biaxial stress state?
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.
刚玉莫来石材料的断裂在室温下由裂纹扩展控制，在高温下由蠕变机制控制。
The rupture of corundum-mullite materials was controlled by crack at room temperature and creep at high temperature.
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。
A distribution function of two dimensional threshold is given for fatigue crack propagation.
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。
Short cracks propagation research: the degree of Microscopic structure influence to the fatigue crack propagation depends on crack length.
根据表面裂纹扩展规律及工程实际，给出了管状杆件表面的实际短、长裂纹范围。
According to the propagation rules of the surface cracks and the engineering practices, have been given the practical range of permissible short and long cracks on the tube surfaces.
对于蠕变裂纹扩展的分析研究还是处于初期阶段，还有许多事情有待于认识和完成。
The analytical investigation of nonlinear creep crack growth is in its infancy and much remains to be learned and done .
一门断裂分析技术，用于确定已知尺寸的预先存在裂纹扩展并导致断裂的应力水平。
Fracture mechanics. A technique of fracture analysis used to determine the stress level at which preexisting cracks of known size will propagate, leading to fracture.
断面形貌的变化与玻纤在基体树脂中的应力集中作用及对裂纹扩展的阻碍作用有关。
Change of section appearance is related to stress concentration of glass fiber on the base resin and on hindering of crack extension.
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 strain energy release rate of the crack propagation was calculated by using virtual crack closure technique, and fatigue life was forecasted.
疲劳寿命的计算采用断裂力学方法，建立疲劳裂纹扩展模型和失效模式的极限状态方程。
Fatigue damage estimation of the tendons was made using fracture mechanics approach, establishing the fracture crack growth rate model and limit state equations for failure modes.
根据扫描断口形貌和裂纹扩展途径的金相观察，还探讨了在混合溶液中的应力腐蚀机制。
The stress corrosion mechanism in mixed solutions was studied based on the metallographic observations of scanning fracture shapes and crack extension direction.
根据扫描断口形貌和裂纹扩展途径的金相观察，还探讨了在混合溶液中的应力腐蚀机制。
The stress corrosion mechanism in mixed solutions was studied based on the metallographic observations of scanning fracture shapes and crack extension direction.
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