A special surface replica technique for microcrack observation of rocks is introduced.
介绍了一种用于岩石材料微裂纹观察的复型技术。
The local cleavage fracture stress is mainly determined by the length of the critical microcrack.
细观解理断裂应力主要由临界裂纹的长度决定。
The experiment result shows that the strain affected by microcrack which was composed of weld 1ine seriously.
试验表明，熔接痕形成的微裂纹对制品应变值的影响较大；
The results show that the cylinderization time depends sensitively on the initial morphology of the microcrack tip.
结果表明：裂尖的几何形状对微裂纹圆柱化时间起决定性作用；
After the second thermal shocking, the coating which has some porosity and uniform net microcrack is complete still.
单斜相含量较低、具有一定孔隙率和均匀网状微裂纹的涂层，经二次真空热震后，涂层仍处于完好状态。
The critical event of cleavage is the propagation of a second phase particle-sized microcrack into the neighboring matrix.
解理的临界事件是由启裂的第二相尺寸的微裂纹向周围基体的扩展。
The SEM results indicate that the compact degrees of geopolymer are modified and the microcrack is reduced by doping organic resin.
SEM研究结果表明：有机树脂能有效的改善地质聚合物的致密程度，减少微裂纹的产生。
The wet grinder machine is mainly applied in foundation treatment field, and accorded with the grouting demand in rock zone with microcrack.
水泥湿磨机主要应用于基础灌浆处理领域，适用于微裂隙发育的区域灌浆。
Furthermore, the micropore in DP steel would change into microcrack when martensite volume fraction reached 30%. Meanwhile necking appeared early.
断裂时当马氏体体积分数增加到30%，颈缩提前，且微孔有向微裂纹转变的趋势。
Structure analysis showed that the incoordination in deformation process of two phases is the main reason why microcrack occurs at phase boundary.
组织分析显示，两相之间变形不协调是相界微裂纹产生的根本原因。
Under experimental deformation conditions, crack and microcrack are the primary characteristics of the deformation of the coal and rock performance.
在实验变形条件下，煤岩主体的变形表现以破裂与微破裂作用为主。
A mechanical model is built firstly for single microcrack under uniaxial compression loading, and the stress component of microcrack end is calculated.
首先建立单一微裂纹在单轴压缩荷载作用下的力学模型，求出裂纹端部的应力分量。
The fluid loss reducing capacity of the gel was investigated in the microcrack reservoirs of the low permeability gas reservoir through evaluation tests.
通过评价实验，考察了压裂液冻胶在低渗透气藏微裂缝储层中的降滤失性能。
The possibility of inner microcrack healing was studied by normalizing the 45 steel samples containing inner crack for one time and two times respectively.
对含有内部裂纹的45钢试样采取了不同温度一次加热正火处理和二次加热正火处理，研究了其内部裂纹愈合的可能性。
The microcrack zone concrete is deeply analyzed by using the exact solution of crack tip stress field and is compared to the result from the local solution.
应用裂纹顶端应力场的精确解，详细讨论了混凝土裂纹顶端的微裂区，并将其与局部解所得的结果进行了比较；进而研究了因应力松驰引起的微裂区的改变。
Piezoresistivity of ecac may involve proximity effect, microcrack and the staggered arrangements of conductive pass-ways due to shear strength of aggregates.
压敏产生的原因是导电沥青混凝土试件的压缩邻近效应、微裂纹和石料间的剪切力使部分导电通路错位。
SEM impact fracture showed that powerful microcrack induction ability of nano SiO2 and nano CaCO3 was the main reason of enhancement and toughness for epoxy resin.
冲击断口的SEM照片显示，纳米二氧化硅和纳米碳酸钙诱发银纹的能力显著，是增强增韧环氧树脂的主要原因。
The fracture stress of DP microstructure increased with the increase of displacement speed, and the microcrack density increased with the decrease of displacement speed.
双态组织的断裂应力随加载速度的上升而增加，微裂纹面密度随加载速度的增加明显下降；
From experiments, it is demonstrated that the mathematical model has a fairly high accuracy, hence forming a basis for the quantitative analysis of the microcrack signal.
实验证明该数学模型具有较高的精度，为定量分析微裂纹信号打下了基础。
A boundary 's equation of microcrack region near crack tip of such brittle materials as concrete has been obtained according to the Griffith' s criterion and fracture mechanics.
利用格利菲思强度准则和断裂力学原理求得了混凝土类脆性材料裂缝端部微裂缝区的边界方程。
After microcrack treatment, their leaching rate can be notably increased with decrease of the content of freely soluble copper and removal of flotation reagent on mineral surfaces.
这种金精粉经微爆处理后，由于组成矿物的特性发生了一系列的变化，加之脱除了残留在矿粒表面的浮选药剂，金的浸出率可得到大幅度的提高。
The microstructure was observed. The results show that the surface microcrack formation on container plate was mainly related to the gross grain and mixed grain in the surface of plate.
结果表明： 轧制表面层的粗晶、混晶和沿轧向的分层是引起表面微裂纹的重要原因，而氧与氮含量较高对冷弯性能有不利影响；
In general, a higher pre existing microcrack density or a lower loading stress rate results in a longer nucleation stage, and therefore, increases the predictability of catastrophic failure event.
一般而言，在相同加载条件下预存微破裂密度越高，或对同一岩石加载速度越慢，对应的断层成核过程就越长，因此最终破坏的可预报性也越高。
In general, a higher pre existing microcrack density or a lower loading stress rate results in a longer nucleation stage, and therefore, increases the predictability of catastrophic failure event.
一般而言，在相同加载条件下预存微破裂密度越高，或对同一岩石加载速度越慢，对应的断层成核过程就越长，因此最终破坏的可预报性也越高。
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