Geometrical effect, crack path kinking and deflection, particle bridging and crack shielding are the main toughening mechanisms.
层间增韧的几何效应、裂纹传播路径控制、裂尖屏蔽和颗粒桥联是主要的增韧机理。
The high fatigue properties were found to be related with higher crack closure stress, rough fracture surface and tortuousity of crack path.
较高的疲劳性能与裂纹尖端闭合应力、断口表面粗糙度以及裂纹扩展路径弯折程度有关。
The images of crack path were analyzed systematically using fractal geometry method, and it showed that the growth paths of crack were of fractal property.
对应于荷载水平，对这些断裂过程的细观图片进行了系统的分析，表明裂纹扩展路径具有明显分形性质。
Since it began in mid-2009, the American economy has followed the post-crisis path of expansion already taken by countries emerging from similar financial crack-ups.
从2009年年中开始，美国同其他从金融危机中恢复的国家一样，进入危机后的经济膨胀阶段。
A path independent of the J-integral and the stress, strain on the crack tip are discussed.
讨论了J积分的路径无关性和裂尖应力，应变奇异性。
By observing the initial Angle of crack arid its propagating path, a simple model to predict the retardation effect of Z-shaped fatigue crack was proposed.
通过观察裂纹的开裂角及扩展路径，提出了一个能用来估算Z型裂纹过载迟滞效应的简单模型。
It was observed that there was a direct connection between the fractographs, the fracture path and the crack tip crazes or microcracks in rib region.
发现断面形态、裂纹路径以及肋状区裂端簇射状银纹群之间有直接联系。每一肋条由一细砂带和一粗破带构成。
Micro characteristic of cracks propagation research: the path of crack propagation in the heat-affected zone and weld metal is the mix of transgranular and intergranular.
裂纹扩展的微观特征研究：在热影响区与焊缝区的裂纹扩展均为沿晶与穿晶混合型。
Therefore, a new efficient path to research plane crack problems especially composite materials plane fracture mechanicals is found.
本文的研究工作，为平面断裂力学特别是复合材料平面断裂力学的研究提供了一条新的有效途径。
In this paper, the fractal effect of crack propagation path on the fatigue behaviors is studied.
研究了分形裂纹扩展对材料疲劳行为的影响。
The fatigue crack initiation life for pipeline connection assemblies is also predicted. The fatigue crack propagation path is analyzed and the fatigue crack propagation life is predicted.
进一步，预估了管路连接件裂纹萌生寿命，预测了裂纹扩展路径并预估了疲劳裂纹扩展寿命。
Aim to establish the path independent integral and its dual form of energy type, and to determine the singularity order of stresses near the crack tip in plane quasicrystals.
目的建立平面准晶中能量型路径守恒积分及其对偶形式，并确定准晶裂纹体裂尖应力奇异性阶数。
The crack propagation path follows some regularity on the whole.
裂纹扩展路径总体上遵循一定的规律。
The size of current path, resistivity, power density are main factors that effect the temperature field and temperature gradient field at crack tip.
试件的通流尺寸、电阻率、导入电流密度是影响裂纹尖端温度场和温度梯度场的主要因素。
A kind of neural network-based image segment technology is researched and this technology is applied to the path crack recognition.
研究了一种基于神经网络的图像分割技术，并将其应用于路面识别。
The results show that the surface crack growth path obtained by numerical simulation is same to that by experiment basically;
结果表明：数值模拟和实际表面裂纹扩展路径基本相似；
The initial path of crack pro-pogation is related with a rake angle of the cutting blade.
裂纹扩展的初期路径与刀具的前角有关。
Statistical analysis of density field was quantified at mesoscale level, including interior, adjacent region, path of propagation of the crack and towards both sides of crack.
细观统计结果表明，裂纹区域和邻近区域的密度要低于正常区域的密度，材料内部的疲劳损伤呈现不均匀性。
Statistical analysis of density field was quantified at mesoscale level, including interior, adjacent region, path of propagation of the crack and towards both sides of crack.
细观统计结果表明，裂纹区域和邻近区域的密度要低于正常区域的密度，材料内部的疲劳损伤呈现不均匀性。
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