Then, the data mining approach to the cause of the crack is presented using rough set theory, the rule of the cause of the crack is extracted, and the main cause of the crack is analyzed.
据此提出了裂缝成因挖掘的粗集方法，对裂缝成因的潜在规律性和裂缝的主要成因进行挖掘，分析裂缝产生的主要原因。
The reason of wall cracks is analyzed, the standard problems of crack width are stated and the preventive methods and measures in the design and construction are presented for reference.
本文分析了墙体裂缝的产生原因，阐述了裂缝宽度的标准问题，并提出了在设计、施工中相应采取的防治方法和措施，供大家参考。
An approach for modeling rock crack propagation using discontinuous deformation analysis (DDA) method is presented.
提出一种用非连续变形分析方法模拟岩石裂纹扩展的方法。
Based on standard test method ASTM C1550 for fibre reinforced concrete (FRC), a modified round panel test method for the material performance of FRC by measuring crack opening width is presented.
在美国材料试验协会标准ASTMC1550圆板试验方法基础上，提出一种改进的基于裂缝宽度量测技术的纤维混凝土(FRC)材料静定圆板试验方法。
So the strain modal broken line drawing method is presented for determning the location of the crack on a structure.
从而提出了应用应变模态折线图来估计梁结构上裂纹位置的方法。
According to the test results and theoretical analyses, a method of calculating the crack width of unbonded partially prestressed concrete beams is presented.
在试验和理论分析的墓础上，提出了无粘结部分预应力混凝土梁裂缝宽度的计算方法。
The reason for inner crack in rectangular billet is analyzed and some measures to improve presented.
简析了石钢电炉炼钢厂矩型坯内裂产生的原因，并提出了相应改造措施。
Stress analysis in variation states at crack tip and notch crown tip is presented.
分析了椭圆孔口端点和裂纹端点处的变动态应力。
Based on these and other available test results, an approach for calculating the crack resistance of joints is presented.
在此基础上提出了节点抗裂度的计算方法。
A stochastic crack growth procedure which based on the determined crack growth model is presented in the paper.
在确定性袭纹扩展模型的基础上，建立了疲劳裂纹扩展的随机模型。
Based on the model, a failure probability analysis method of crack growth is presented which takes the randomness of inclusions' position into consideration.
在此基础上提出的裂纹扩展失效概率分析方法，能考虑夹杂空间位置随机性及扩展过程中的裂纹合并情况。
On top of that, this method is used to calculate the stress intensity factors of interface crack at the heel of gravity dam, and some useful conclusions are presented.
作为应用，文中计算了坝踵界面裂缝的应力强度因子，得出了应力强度因子随坝基弹模、库水位和缝水压力的变化规律。
A method for crack initiation life prediction of components is presented.
本文提出一种零部件的裂纹形成寿命的类比估算方法。
The two dimensional accurate solution is obtained on plane strain assumption, the numerical results of strain energy release rate and crack tip energy release rate are presented.
在平面应变假设下，给出其二维精确解，并提供了机械应变能释放率和裂尖能量释放率等数值结果。
A side-testing method for measuring the depth of the crack layer is presented.
提出了一种测量裂纹层深度的方法——侧面观测法。
In this paper, the failure of hot-work valve die is analysed with SEM, optical microscope and hardometer. The crack mechanism is explained and some methods are presented to prolong the die-durability.
本文运用电子扫描、金相分析、硬度测量等方法对气门阀热镦模的早裂进行了失效分析，探讨了模具的失效机理，提出了改善模具质量、提高模具使用寿命的途径。
Starting from a general case for problems of torsion-bending of a cylinder, a so called crack-cutting method is presented in this paper.
本文从柱体的扭转-弯曲问题的一般情况出发，介绍裂纹切割法的基本思想。
In this paper, the boundary element method for calculating surface crack is studied and suitable location or the singular isoparametric elements, is presented.
本文研究了计算半随圆表面裂纹应力强度因子的边界元方法。
The formula for calculating the average crack growth rate of 840d wheel web hole is presented.
给出了840d车轮辐板孔平均裂纹扩展速率的计算公式。
In this paper, a relative criterion method is presented for analysing the elastic plastic stable crack propagation under biaxial loading conditions.
本文提出了一个用相对准则分析双向载荷下弹塑性裂纹稳定扩展的方法。
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。
In this paper, through analyzing the subcritical crack growth, a new formula is presented which can be used to calculate the crack fracture initiation stress at low and middle stress rates.
本文通过裂隙亚临界扩展的分析，提出一个计算低、中等应力率下裂隙断裂起动应力的新公式。
A method of evaluating the crack and damage is introduced. The presented work is beneficial to the maintenance and management of concrete structures.
文章对一些常见的混凝土构件裂缝作了分类研究和损伤定位分析，介绍一种评价方法，旨在为混凝土结构的养护、管理提供参考。
The relation between surface crack space and strata displacement is presented to offer guidelines to water inflow prediction.
建立地层开裂与变形的对应关系，为突水事故的预测预报提供了依据；
Mesoscopic damage size on the top of crack is analysed, the effective stress strength factor is defined, the mode I crack damage fracture criteria is presented.
以混凝土单轴拉压损伤为基础，给出了单元弹性损伤本构关系，分析了裂纹尖端损伤微裂区尺寸，定义了有效应力强度因子，给出了I型裂纹损伤断裂判据。
Then, the strain accumulation model of EPFC growth is presented based on an analysis of elastic-plastic stress and strain at the crack-tip.
在对裂尖弹塑性应力应变分析的基础上，作者建立了疲劳裂纹扩展的应变累积模型。
A criterion of crack growth at interaction of fatigue and creep is presented.
在互动的疲劳和蠕变裂纹扩展的判据。
A criterion of crack growth at interaction of fatigue and creep is presented.
在互动的疲劳和蠕变裂纹扩展的判据。
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