Carbon fibers restrained the matrix cracks growth and diminished the crack tip stress intensity factor.
纤维对基体开裂起抑制作用并降低了裂纹尖端的应力集中。
The predicted fracture stress matrix cracking stress and crack spacing just have error less than 20% with the corresponding experimental value.
预测的断裂应力、基体开裂应力和裂纹间距与实测值最大误差在20%以内。
The fracture mechanism of composites is matrix crack, but the particle crack will be the main crack mechanism when the content of coarse or the flaw in the coarse increased.
复合材料的主要破坏机制为基体断裂，当复合材料中粗颗粒含量增加或者粗颗粒本身的缺陷增多时，粗颗粒的断裂也将成为重要的复合材料破坏机制。
Study methods of damage in fibre-reinforced composites, especially the matrix crack, is described in this paper. Prospects for research in damage of composites is also discussed.
阐述了关于纤维增强层板复合材料的主要损伤形式，特别是基体开裂损伤的研究情况。并展望了复合材料损伤的研究前景。
Based on the failure analysis of reinforced concrete and the fracture behavior of concrete as a type of quasi-brittle materials, a model of matrix crack with bridging bar is proposed in this paper.
基于钢筋混凝土的破坏分析，结合混凝土类准脆性材料的断裂特性，本文提出了强化筋桥联基体裂纹力学分析模型，在该虚拟裂纹端部存在粘聚力分布，而强化筋在桥联裂纹处具有与基体脱离的部分段。
After filling the crack, the healing agent reacts with the catalyst which is embedded in the matrix polymer.
充填裂纹后，愈合剂与包埋在基体聚合物中的催化剂反应。
All the result demonstrated the relationship between the pull out property and the crack propagation in matrix qualitatively.
实验结果定性地证明了纤维的拉拔特性对基体裂纹扩展的影响关系。
Steel fiber is often used to reinforce cemented materials because it can provide bridging effect of crack in matrix.
钢纤维因其能为基体裂纹提供桥联而经常被用于增强水泥基材料。
The critical event for cleavage fracture in notched specimens is the propagation of a ferrite grain-sized crack into the matrix, and is independent of specimen sizes and widths.
在缺口试样中，解理断裂的临界事件是铁素体晶粒尺寸的裂纹扩展进入基体，不随试样尺寸和宽度变化。
The results showed that the forming of crack was mostly made by the interface defect between overlaying welding layer and matrix.
结果表明，堆焊层与基体的界面缺陷是裂纹形成的主要原因。
Size of reinforcement bar significantly affected the fatigue life of materials, the larger the matrix space can make more resistance to crack propagation.
增强柱的尺寸对材料疲劳寿命影响较大，较大的基体空间可以为裂纹扩展增加更多的阻力。
The results show that brittle fracture occurs in matrix and the P-WCMOD(crack mouth opening displacement) curve is linear till loading to failure.
实验结果表明：水泥基体发生脆性断裂，从加载到试件破坏P-WCMOD曲线一直呈线性；
In respones to it, this paper discusses matrix expression for crack maintenance of the metal structure.
鉴于此，有必要提出一种对裂纹维修的矩阵表达方法，比较和评价各种裂纹维修方法的优劣。
When crack expanding problem is studied, a high efficiency semi-analytical matrix perturbation method is put forward.
对于裂纹扩展问题，提出了一种高效的半解析矩阵摄动法。
Investigation indicated that plastic flow characteristic is not obvious at the interface between ASBs and matrix, which observed long crack in lamellar microstructure.
片层组织绝热剪切带与基体的界面塑性流变特征不明显，并且在该区域观察到了呈快速扩展特征的长裂纹。
By means of chemical composition analysis, mechanical property test and microstructure examination, the results showed that this defect was result of rough surface and not the crack existed in matrix.
采用化学分析、力学性能试验和金相检验等方法对该裂纹进行了分析。结果表明，此缺陷是由于试验环原始表面的粗糙度过大造成的。
In previous researches, the attentions were mostly paid to the local negative stiffness caused by concrete crack, and in this case the global stiffness matrix was rarely negative.
笔者在已有的研究成果基础上，对由混凝土结构鳖体刚度矩阵变负引起的求解困难提出了相应的解决方案。
The residual stresses in the alumina matrix and on the mullite particles as well as their effect on crack growth were analyzed by modelling.
通过模型分析了氧化铝基体和莫来石颗粒的应力状态及其对裂纹扩展的影响。由莫来石颗粒引入的基体拉应力使裂纹倾向于向晶内扩展。
The stiffness matrix of a hybrid crack-tip singular element is first derived, then by use of first-order Taylor expansion the mean and variance of stress intensity factors are formulated.
文中首先给出了杂交模式的裂纹尖端奇异单元的刚度矩阵，然后基于随机场的局部平均理论和一阶泰勒展开得到了应力强度因子均值和方差的计算公式。
The striation spacing in heat affect zone and welded seam samples was wider than that in matrix sample, this shows that fatigue crack propagation...
焊缝区和热影响区试样的辉纹间距较基体区的大，说明裂纹扩展速率快，焊缝和热影响区的抗裂纹扩展性较基体差。
The striation spacing in heat affect zone and welded seam samples was wider than that in matrix sample, this shows that fatigue crack propagation...
焊缝区和热影响区试样的辉纹间距较基体区的大，说明裂纹扩展速率快，焊缝和热影响区的抗裂纹扩展性较基体差。
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