As the fleet ages, there's an increasing need for embedded wireless strain sensors capable of detecting and tracking accumulated strains — "precursors" to crack initiation, according to the official.
随着机群服役时间的增加，对嵌入式无线应力传感器的需求也在不断的增加，通过这些传感器对应力积累进行探测和跟踪，避免飞机机体发生可能的疲劳和破裂。
The study of problems involving crack initiation, propagation and arrest is always the interest of fracture mechanics.
复合型裂纹起裂、扩展和止裂问题一直是断裂力学研究的重点。
It is shown that the proposed ductile fracture model can accurately and effectively predict the whole damage process of ductile metals including crack initiation, propagation and final fracture.
结果表明，该模型可很好地预测延性金属材料自裂纹萌生、扩展直至完全断裂的全过程。
Crack defect promotes crack initiation and growth.
裂纹缺陷促进了裂纹的萌生和扩展。
The fatigue crack initiation behaviour and its mechanism were investigated.
研究它们在循环加载下的疲劳裂纹萌生行为及其机制。
The causations of crack initiation in a right landing chassis wheel axle were analyzed.
分析了某型飞机右起落架轮轴产生裂纹的原因。
Pre-damage would accelerate crack initiation and propagation, and increase the degree of damage.
预损伤加快了裂纹的产生、扩展，使得损伤程度进一步加重；
Because of the bad compatibility of wood flour and polyethylene, the crack initiation time shortened.
木粉与高密度聚乙烯的相容性不好，是裂纹引发时间缩短的主要原因。
The methods of fatigue crack initiation life predictions under complex load are introduced in this paper.
介绍了复杂载荷下疲劳裂纹形成寿命预测的方法。
The primary failure model is fatigue fracture that is always resulted by the crack initiation and propagation.
疲劳断裂是气门弹簧失效的主要模式，它是疲劳裂纹萌生及其扩展的结果。
Improper rework practices can result in unscheduled maintenance or surface damage that causes crack initiation.
翻修不当可能会造成非计划性维修和表面损伤从而造成裂纹。
The problem of crack initiation in epoxy resin sealing compounds at low temperature is discussed in this paper.
针对如何解决环氧树脂灌封料在低温下易产生开裂这一问题进行了探讨。
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。
Finally, examples are given for predicting the fatigue crack initiation life from the tensile properties of steels.
最后给出了根据钢的拉伸性能估算疲劳裂纹起始寿命的实例。
The results showed the improvement on the impact strength was owing to the increase of the crack initiation energy;
结果表明，共混物冲击强度的改善主要是由于其裂纹引发能的提高；
The fractography of the fatigue crack initiation displayed cleavage facet and more second cracks after pre-training.
裂纹形成的断裂为穿晶解理机制，预应变可导致更多的二次裂纹。
The threshold of the fatigue crack initiation from the notch of the microbeam is close to that of the bulk material.
疲劳裂纹从尖缺口处萌生的门槛值接近块体材料。
The feature of macro-profile is analyzed, and the crack initiation and extending mechanism of brake disc is discussed.
分析了制动盘裂纹剖面的宏观形貌特征，并对制动盘裂纹萌生和扩展机理进行探讨。
Moreover, the study indicated that the fatigue crack initiation period is the main portion of the total fatigue life at long lives.
该研究还表明，在长寿命范围，裂纹起始寿命是疲劳全寿命的主要部分。
The fatigue limits for crack initiation and fracture were predicted and the predicted values agreed well with the experimental results.
预测了疲劳裂纹的萌生和断裂极限，预测值和实验值相当一致。
The micro process of crack initiation and propagation in H68 brass with low stock fault energy was observed by in situ tensile test in TEM.
采用透射电镜动态拉伸、原位观察研究了低层错能合金H68黄铜断裂的微观过程。
The fatigue fractography consists of several different zones, including fatigue crack initiation, slow, fast propagation and final fracture.
疲劳断口上存在典型的疲劳裂纹萌生区、缓慢扩展区、快速扩展区和最后瞬断区。
A practical method for predicting the reflective crack initiation life is developed, and the corresponding formula in the closed form is obtained.
在此基础上，导出了预估反射裂缝形成寿命的简便方法与公式。
Since the pressure gradient affects stress strength of crack top, it is unsuitable to judge crack initiation by the traditional breakdown pressure.
气体压力分布影响裂缝尖端应力强度，因而不能用传统的破裂压力来判断裂缝起裂扩展。
The fatigue crack initiation life for standard titanium alloy TC6 specimens is predicted, and the result is consistent with that of the experiment.
利用该方法预估了TC 6钛合金标准件疲劳裂纹萌生寿命，其结果与试验数据吻合。
When the component is installed on an airplane, this internal damage can lead to crack initiation and propagation, resulting in component fracture.
如果把这样的部件安装在飞机上，其内部损伤会导致裂纹并扩展，最终造成部件断裂。
Objective to study the crack initiation and fracture of porcelain-fused-metal (PFM) crown under monotonic load by means of experimental techniques.
目的研究烤瓷熔附金属冠中央窝受单调递增静态载荷下的裂纹产生和破坏形式。
The analysis results have shown that creep damage and crack initiation behaviour depend strongly on the void location and crystallographic orientation.
计算结果表明：晶体取向和孔洞位置对试样蠕变损伤和裂纹萌生行为有着显著的影响。
The micro wear mechanism for PEN is plastic flow and broken of the fiber structure, while that for PI is crack initiation, extending and block fracture.
PEN薄带的微观磨损机理主要是纤维组织的塑性流动和拉断，而PI薄带的微观磨损机理为裂纹的萌生、扩张和块状剥落。
The micro wear mechanism for PEN is plastic flow and broken of the fiber structure, while that for PI is crack initiation, extending and block fracture.
PEN薄带的微观磨损机理主要是纤维组织的塑性流动和拉断，而PI薄带的微观磨损机理为裂纹的萌生、扩张和块状剥落。
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