疲劳裂痕成长；
The flaking do increases and undulates the fatigue crack growth rate.
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 factors influencing the fatigue crack growth are of random nature.
影响疲劳裂纹成长的因素具有随机性质。
Fatigue crack growth threshold is predicted based on materials cyclic plasticity.
基于材料的循环塑性预测了疲劳裂纹扩展的门槛值。
An experimental study on the fatigue crack growth of GH4169 superalloy has been carried out.
本研究中对GH4169高温合金的疲劳裂纹扩展性能进行了试验研究。
The fatigue crack growth curve from initial crack size till fatigue failure is simulated step by step.
循环续循环模拟计算出裂纹从初始长度一直到疲劳破坏的扩展曲线。
We get valuable results about the effect of the stress ratio and residual stress on fatigue crack growth.
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。
At last, adopting PFM to estimate fatigue crack growth life for welded steel beams under given reliability.
最后，给出了概率断裂力学方法预测焊接钢梁在给定可靠度下疲劳裂纹扩展寿命的算例。
It is shown that the humid air enhances fatigue crack growth and increases embrittlement in aluminium alloys.
湿空气促进铝合金疲劳裂纹生长和增加合金的脆性。
The fatigue crack closure and fatigue crack growth rate in the high strain region of SCT specimen are studied.
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。
Effect of experimental parameters on small fatigue crack growth threshold test in 9310 steel was investigated.
针对9310钢研究了试验参数对疲劳小裂纹门槛值测试结果的影响。
The effects of thickness, temperature and stress ratio on fatigue crack growth behavior were studied separately.
分别研究了厚度、温度、应力比等因素对直接时效GH 4169高温合金疲劳裂纹扩展性能的影响。
We also make tentative researches for fatigue fracture and for the effect of secondary crack on fatigue crack growth.
本文还在疲劳断口的研究方面进行了新的尝试，探讨了二次裂纹对疲劳裂纹扩展的影响。
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。
Having excluded the effect of welding residual tresses on crack closure, fatigue crack growth rates of the welded join...
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Therefore, the study on fatigue crack growth laws at high temperature is very useful for safety of high temperature equipments.
因此，高温下疲劳裂纹扩展规律的研究具有很大的工程实用价值。
This paper gives a comprehensive introduction and review of the models for predicting fatigue crack growth under spectrum loadings.
本文对谱载荷下预测疲劳裂纹扩展的各种模型作了综合介绍及评述。
When the crack is small, the fatigue crack growth is obviously influenced by microstructure features and multiple phase boundaries.
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。
A method is proposed to simulate the fatigue crack growth by finite element technique for corner cracks under cyclic tension loading.
给出了一种利用有限元技术模拟周期性张力载荷作用下孔边角裂纹扩展过程的方法。
The reliability of the fatigue crack growth life of single inclusion is analyzed by the advanced first order and second moment method.
采用改进一次二阶矩法分析单个夹杂裂纹扩展的可靠性。
Studying of fatigue crack growth under different spectrum loadings is very important for the reliable life prediction of ship structures.
研究裂纹在谱载荷作用下的扩展规律对可靠预报平台等结构物的疲劳寿命具有十分重要的意义。
Particula emphasis has been devoted to the influence of load ratio and microstructure on behaviour of near-threshold fatigue crack growth.
着重分析了载荷比和显微结构对门坎值附近裂纹扩展行为的影响。
The objective of this paper is to study the effects of three dimensional constraints on fatigue crack growth under aircraft spectrum loading.
研究裂纹端部三维应力约束、塑性约束和位移约束等对谱载疲劳裂纹扩展的影响。
The analysis shows that the compressive loading has a significant contribution towards the crack tip plasticity and the fatigue crack growth.
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 fatigue crack growth (FCG) behavior of the weld heat-affected zone of 14MnNbq bridge steel was systematically investigated in this paper.
从最弱链模型的物理本质出发，探讨了影响焊接热影响区脆性断裂的主要因素。
To predict the fatigue crack growth life of welded equipments at elevated temperature, a group of novel fatigue crack growth equations was proposed.
为了预测焊接构件在中温环境下的疲劳裂纹扩展寿命，提出了一组新的疲劳裂纹扩展方程。
The results indicate that, the elastic-plastic mismatch of components has significant influence on the near-tip "driving force" of fatigue crack growth.
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。
Three variables as temperature, load frequency and stress ratio are the critical parameters affecting fatigue crack growth behaviour in metallic material.
温度、载荷频率和应力比是影响材料疲劳裂纹扩展行为的主要因素。
An analytical and experimental study were performed on the fatigue crack growth of stiffened LY12CZ Aluminum Alloy panels with multiple site damage (MSD).
进行了多处损伤LY 12 CZ铝合金加筋板的疲劳裂纹扩展的分析与试验研究。
An analytical and experimental study were performed on the fatigue crack growth of stiffened LY12CZ Aluminum Alloy panels with multiple site damage (MSD).
进行了多处损伤LY 12 CZ铝合金加筋板的疲劳裂纹扩展的分析与试验研究。
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