出现小裂纹必然是脆性断裂的前兆。
小裂纹是一个类似薄片的区域。
在100%变焦，你可以看到我们的小裂纹。
对于这类小裂纹扩展机制的分析目前还比较少。
The plastic zone by the hole edge and its effect on the initiation and propagation of the small crack also were investigated.
有时小裂纹密度很大，使受应力的塑料外观呈现乳白色。
Sometimes the density of crazes is sufficient to give the stressed plastic a milky appearance .
将复型技术应用于疲劳小裂纹扩展试验中的裂纹长度测量。
Reconstructed model technique is successfully applied to measure short fatigue crack length in the testing work.
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。
When the crack is small, the fatigue crack growth is obviously influenced by microstructure features and multiple phase boundaries.
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。
Effect of experimental parameters on small fatigue crack growth threshold test in 9310 steel was investigated.
复合体系中的小裂纹穿过材料并使微包覆物破坏，从而释放出愈合助剂。
Small fractures in the composites move through the material and rupture the microcapsules, releasing the healing agent.
本文利用显微镜观察记录了玻璃中预制小裂纹稳态与非稳态扩展的全过程。
In this paper, we observed and recorded the whole process of stable and unstable cracking of a small pre-crack by using a microscope.
加：载后金瓷冠表面微观结构：A组可见少量表浅小裂纹，偶见大裂纹，少量小气孔散布；
The surface microstructure after loading: in group A, few small shallow cracks occurred, large cracks occasionally shown, few small pores scattered;
在试验中观察到了MSD的竞争现象，证实了群发小裂纹也是MSD中一种重要的破坏形式。
In the tests, competition of the MSD is observed, and group-occurring small cracks are also proved to be an important kind of failure mode.
只有小裂纹扩展到足够长并钝化到足够宽，才能够影响主裂纹的扩展及其前端应力、应变的分布。
Only if this short crack extends long enough and blunted wide enough, can it affect the principal crack extension and the distribution of stress and plastic strain.
目前各种无损检测技术无法确定小裂纹、紧闭裂纹和冶金缺陷，压力验证试验却能弥补这方面的不足。
The present nondestructive inspection techniques are unable to recognize small flaws, the metallurgical drawbacks and tight cracks, low temperature and high pressure proof-test can do it.
因此，成簇形状（内置微裂纹）可吸收压力一致预防小的裂缝和大的碎裂。
Therefore, "tufts" — built-in micro cracks — absorb pressure in unison to prevent splits and major fractures.
在涂膜中避免小的裂纹或断裂，避免爆裂的能力。
The ability of a finish to cover cracks, voids or small gaps without a break in the film.
本文研究了含裂纹小损伤复合材料容器结构的在线初期损伤检测。
Online damage detection of initial and tiny crack in a cylindrical composite vessel is studied in this paper.
少量铁素体的焊缝凝固裂纹断口上有许多小塑性区，有明显的韧窝。
Some plastic regions could be found and some dimples had been observed on the fracture surfaces of the solidification cracking of austenitic-ferritic weld metals.
我们努力保持我们的粒子模拟结果尽可能小的裂纹模拟的样子。
We tried to keep our particle simulations as small as possible for iterating the look of the crackle simulations.
小统计区域平均CT数变化则对裂纹萌生更敏感。
The variation of mean CT values in small statistic region is more sensitive to the initiation of crack.
结果发现，把腐蚀坑等效为具有相同寿命的表面裂纹时，等效表面裂纹的尺寸比对应腐蚀的尺寸小19.7% - 22.5%。
The result show that the size of equivalent initial surface crack is less than 19.7to 22.5 percent of surface corrosion pit size which have the same life.
铸件冷却收缩时，小的裂纹源进一步扩展形成裂纹缺陷。
On cooling and contraction, the small cracks further expand into hot tearing defect.
与不可导通电边界条件相比，导通裂纹表面的电位移强度因子比不可导通裂纹的电位移强度因子要小许多。
It is found that the electric displacement intensity factors for the permeable crack surface conditions are much smaller than the results for the impermeable crack surface conditions.
由于其横截面积相对小，不能承受大的应力，所以点焊处容易产生裂纹。
Of their relatively small cross sectional area , which does not allow them to sustain high stress.
以经爆破试验的四件小钢管件裂纹为研究对象，找出裂纹宽度与磁记忆信号的关系，得出漏磁场变化梯度的最大值随裂缝宽度增加而增加。
Through the examination experiment on four tube pieces crack part, the relation of crack width, the maximum of leaking magnetic field and differential coefficient K is found out.
一个小裂缝(内部或表面的)或者是结构不连续，在该处施加的拉伸应力将被放大，裂纹会扩展。
Stress raiser. A small flaw (internal or surface) or a structural discontinuity at which an applied tensile stress will be amplified and from which cracks may propagate.
介绍了小规格丝锥毛坯，采用软化处理工艺与降低待冲挤面表面粗糙度的方法，来防止冲方时容易产生裂纹的措施。
This paper introduces the method to treat the tap of small specifiations using the softening technology and the way to reduce the roughness of the surface to avoid cracks when punching.
小波变换作为一种新的信号处理方法，可以有效地提取损伤特征并能准确发现裂纹。
Thirdly, a new method to analyze the signal by wavelet transform is presented. This method can efficiently extract the feature of damage and can precisely predict crack.
小波变换作为一种新的信号处理方法，可以有效地提取损伤特征并能准确发现裂纹。
Thirdly, a new method to analyze the signal by wavelet transform is presented. This method can efficiently extract the feature of damage and can precisely predict crack.
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