We have made the data collection and analysis system for recording microcracks in rock to study the three dimensional pattern of fracture and the dynamic properties of rock during pressurization.
为了研究岩石加压过程的三维破裂图象和它的动力学性质，特研制了岩石破裂实验数据采集分析系统。
There are also some micropores and microcracks in the reflowed alloy.
在回流焊形成的合金层中也有一些微孔和裂缝。
One reasonable explanation is that etching removes and blunts microcracks.
有一种合理的解释是说腐蚀能够去掉并钝化微裂纹。
This verifies the existence of dislocation pile-up and its stimulation to the nucleation of microcracks.
证实了位错塞积的存在及其对微裂纹形核的促进作用。
The formation of these microcracks is closely related to local conditions of the Tusion line concavities.
熔合线凹入处的局部条件直接影响微裂纹的形成。
The digital image correlation technique is used to determine the deformation field of the rock material involving the microcracks.
提出用数字图像相关技术研究含微裂纹的岩石的变形。
Average rate of the deposit defect examined is below 1.5%. The causation and situation of microcracks and voids are analysed in the test.
试验对堆焊层的平均孔隙缺陷率进行了测算，测算结果为碳化钨合金颗粒平均孔隙缺陷率低于1.5 % ，并对裂纹、孔隙分布及产生原因进行了分析。
The microcracks caused by the transforming inclusions associate closely with the mechanism of fracture and toughness in ceramic materials.
由夹杂转变引起的微开裂与陶瓷材料的断裂和增韧机制密切相关。
The microcracks in materials can generally be assumed to be elliptic, which can describe more exactly the properties of a microcracks system.
一般地，材料内部的微裂纹可采用椭圆形微裂纹进行描述以较真实地反映微裂纹系统的细观特性。
When carburized under high carbon potential (1. 1% C), microcracks tend to appear on the martensitic matrix near the outer surface of the layer.
表面碳势为1.1%C的渗碳硬化层内，临近外表面部位的枣核马氏体中会出现显微裂纹。
The effect of the microcracks size on damage evolution was investigated to overcome the limitations of damage models based only on defect density.
针对以缺陷密度为参量的细观损伤演化模型的局限性，着重研究了微裂纹尺寸对损伤演化的影响。
The results indicate that the plasma sprayed wollastonite coating has a rough surface and lamellar structure including some pores and microcracks.
结果表明：等离子喷涂硅灰石涂层具有粗糙的表面和层状结构，涂层内部存在一些气孔和微裂纹。
Theoretical study shows the net stress is not equal to the effective stress because of the existing microcracks in the low permeability sandstone.
理论研究表明，低渗岩石由于存在微裂缝，净应力不等于有效应力。
A number of microcracks are produced around the scratched place because of the thermal stress and structural stress in the process of heat treatment.
在热处理过程中由于热应力和组织应力的作用，导致划伤部位产生大量的显微裂纹。
It is suggested that the broken crystal layer and microcracks in surface layer of the cold drawn rod is the source of the heat treatment induced cracks.
GH105合金冷拉棒表面存在的碎晶层和其内部的显微裂纹是热处理裂纹源。
The stable growth of cracks in a brittle material with three mutually perpendicular families of microcracks under proportional tensile loads was studied.
提出了含三相正交分布等尺寸微裂纹的准脆性材料稳定扩展的细观损伤演化模型。
The fracture process observed by SEM with a dynamic tensile stage showed that the dispersed phase of TLCP could delay and block the propagation of microcracks.
使用带拉伸实验台的扫描电镜观察到了TLCP微纤或微球对微裂纹扩展的阻滞及延缓作用。
The microcracks have certain effects on reducing the average thermal expansion coefficient, nevertheless they decrease the mechanical strength of the ceramics.
微裂纹对降低陶瓷材料的平均膨胀系数有一定作用，但同时又降低了材料的机械强度。
The general problem in various fracture processes microcracks or voids evolution has been investigated by employing non-equilibrium statistical concept and method.
本文用非平衡统计的概念和方法探讨了各种断裂过程中的共同问题——微裂纹或微空洞的演化。
Based on the theory of surface diffusion, a finite element method was developed to simulate shape evolutions of two-dimensional microcracks with surface perturbation.
根据表面扩散控制下物质迁移规律，建立有限单元法，对裂面形貌扰动下二维微裂纹演变过程进行数值模拟。
Seismic velocity anisotropies are mainly caused by lattice preferred orientation( LPO) , shape preferred orientation( SPO) of the major minerals, and oriented microcracks.
影响各向异性的主要因素有岩石的结构构造、矿物的晶格优选方位（LPO）、形态优选方位（SPO）和定向微裂隙。
The results show that there was obvious microporosity at the positions indicated by fluorescence, and clear grinding traces and some local microcracks were found at the dovetails.
结果表明荧光显示部位存在明显的显微疏松，榫头处有清晰的磨削痕迹，局部有微裂纹。
Conclusions a kind of structure named ultra-trabeculae might appear during the healing process of microcracks which is beneficial to bear loading and repair the damaged trabeculae.
结论在微骨痂修复微破裂过程中可能存在一种“超微小梁”结构，这种结构对于受损骨小梁承受应力以及修复均有利。
"As you run or walk throughout life, microcracks develop in bone," he explained. "Therefore, bone remodeling and replacement with new bone is required to maintain skeletal integrity."
你在一生中或跑或走，骨骼就会产生微小的裂缝，因此骨骼需要新生骨来重塑和替代以保持骨骼的完整性。
The microcracks in rock mass are formed, expanded and converged which have remarkable influences on the mechanical properties of rock. It may bring about material inferiority and failure.
岩体中微裂纹的形成、扩展和汇合对岩体的力学性能产生显著影响，可以导致材料的逐渐劣化直至破坏。
It is showed that:(1)the major surface damage patterns due to grinding are microplastic deformation trace, fracture chipping pit, microcracks, and subsidence in the loosen region of material;
结果表明：磨削损伤的主要形式有显微塑性变形磨痕、断裂剥落坑、磨削微裂纹和材料疏松区的塌坑；
It is the fine cementation of microcracks so as to reduce or eliminate the stress concentration on their ends intensively. Thus, the limit yield of rock mass and its strength are both enhanced.
微细裂隙的良好胶结，使其端部应力集中被降低或消除，岩体屈服极限增大，强度提高。
The mesostructural images of marble are processed by regional growing theory based on image processing technique. The meso-damage information of granite microcracks are obtained from SEM images.
利用扫描电镜（SEM）拍摄得到昌江花岗岩的大量细观结构图片，利用数字图像技术对图片进行处理，提取微裂纹的细观几何信息。
Microcracks of SCC initiated when the corrosion-enhanced dislocation emission and motion reached a certain condition.
当腐蚀促进的位错发射和运动达到临界状态时，应力腐蚀裂纹形核和扩展。
Microcracks of SCC initiated when the corrosion-enhanced dislocation emission and motion reached a certain condition.
当腐蚀促进的位错发射和运动达到临界状态时，应力腐蚀裂纹形核和扩展。
应用推荐