结合强度

The principal stress in the plane strain direction, which can be determined under the rigidity-plasticity assumption using static earth pressure coefficient , is the intermediate principal stress under the limit equilibrium condition. The relationship between major and minor principal stresses is obtained based on the strength criterion.

平面应变方向上的主应力在极限平衡条件下为中主应力，在刚塑性假定的基础上通过静止土压力系数确定，结合强度准则得到大主应力与小主应力之间的关系，进而求得土压力系数。

A comparative study of porosity, oxide contents, bond strength and wear resistance of 3Cr13 stainless steel coatings deposited by high velocity and regular arc spray processes was carried out. An orthogonal and rotational regression experimental method and an ordinary single-factor experimental method were adopted to evaluate the coating hardness with respect to the effect of processing parameters. The quantitative formula of processing parameters with coating hardness was obtained by means of microcomputer.

摘 要：对比研究了3Cr13不锈钢高速电弧喷涂涂层和普通电弧喷涂涂层的孔隙率、氧化物含量、涂层结合强度和滑动磨损性能，并采用多因素正交旋转回归设计和单因素对比试验的方法研究了高速电弧喷涂工艺参数对3Cr13不锈钢涂层显微硬度的影响，用微机回归得到了喷涂工艺参数与涂层硬度之间的定量关系式。

A comparative study of porosity, oxide coontents, bond strength and wear resistance of 3Cr13 stainless steel coatings deposited by high velocity and regular arc spray processes was carried out. An orthogonal and rotational regression experimental method and an ordinary single-factor experimental method were adopted to evaluate the coating hardness with respect to the effect of processing parameters. The quantitative formula of processing patameters with coating hardness was obtained by means of microcomputer.The results show that, compared with the regular arc spray process, a dense?

对比研究了3Cr13不锈钢高速电弧喷涂涂层和普通电弧喷涂涂层的孔隙率、氧化物含量、涂层结合强度和滑动磨损性能，并采用多因素正交旋转回归设计和单因素对比试验的方法研究了高速电弧喷涂工艺参数对3Cr13不锈钢涂层显微硬度的影响，用微机回归得到了喷涂工艺参数与涂层硬度之间的定量关系式。

The results show that, compared with the regular arc spray process, a dense coating with lower porosity, higher bond strength and higher oxide contents were produced by a newly developed high velocity arc wire spray process.

结果表明，和普通电弧喷涂涂层相比，高速电弧喷涂涂层组织致密、孔隙率低、涂层氧化物含量增多，涂层－基体界面结合强度大于40？

Coating with lower porosity, higher bond strength and hhigher oxide?contents were produced by a newly developed high velocity arc wire spray process.The bond strength in higher than 40MPa, which is increased by 52 percent than that of regular arc sprayed coatings.

结果表明，和普通电弧喷涂涂层相比，高速电弧喷涂涂层组织致密、孔隙率低、涂层氧化物含量增多，涂层-基体界面结合强度大于40MPa，比普通电弧喷涂提高了52％。

We also elaborated upon the relations between immediately adjacent fibers and loadings、interfacial bonding、residual stress、matrix parameters and material elastic properties of two kinds of fibers and the influence on the observed"hybrid effect"in a hybrid composite.

计算了混杂复合材料由于高模量纤维破坏引起的高低模量纤维应力集中系数，详细分析了载荷大小、界面结合强度、残余应力和参与混杂的两种不同纤维及基体的弹性性质等与邻近纤维应力集中的关系及其对复合材料"混杂效应"的影响。

So it usually needs to roughen the surface toimprove the bonding strength. But the coarseness was not used in this paper. The technique ofarc spraying zinc in advance and then arc spraying copper was put forward to solve the problemof bonding strength.

而本研究根据锌喷涂层具有较好的附着性，提出了在电铸层上先喷涂锌后喷涂铜的工艺路线，较好地解决了铜喷涂层与电铸层结合强度偏低的问题。

The microstructure of HVAS sprayed Al-bronze coatings and the morphology of the spray particles were investigated using Scanning Electron Microscopy and Optical Microscopy. The hardness and the adhesive strength of the coatings were measured using pull-off test and sclerometer, respectively.

摘 要：采用光学显微镜、电子扫描显微镜研究超音速电弧喷涂铝青铜涂层的显微组织结构及喷涂粒子状态；采用拉伸试验和硬度计分别测试了涂层的结合强度与硬度。

The bond strength of coating layer is tested by the heat shock,impact pressure and file scratch test.

镀层的结合强度采用热震、冲击和锉刀法进行测试。

The frictional behavior of samples was determined before and after sputtering, cohesion strength of samples was checked by scratch test.

结果表明在工具钢表面溅射镀BN薄膜后摩擦因数明显降低，从原来的0.8下降到0.6，具有良好的减摩效果；BN薄膜和T10钢基材之间有一定的结合强度。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。