| 1. | Singularity stress analysis near the tip of v notch in homogeneous materials
型缺口尖端振荡性奇异应力场产生的条件 |
| 2. | Homogeneous material ? a “ homogeneous material ” is defined as a material comprised entirely of uniformly dispersed constituents throughout that can be added to a product in the current or previous processing steps
均质材料?是指全部由均一的分散组份构成的材料，并且可以在当前或之前的工序中加入到产品中去。 |
| 3. | Surface chemical analysis - auger electron spectroscopy and x - ray photoelectron spectroscopy - guide to the use of experimentally determined relative sensitivity factors for the quantitative analysis of homogeneous materials
表面化学分析.俄歇电子光谱法和x射线光电子光谱法.同质材料定量分析用实验室测定相对敏感性系数的使用指南 |
| 4. | Based on the basic equations of the elasticity plane problem , displacement fields and singular stress fields near the v - notch tip under mixed - mode of i and ii are obtained for homogeneous materials by a new definition of the stress intensity factors
基于弹性力学平面问题的基本方程，通过重新定义应力强度因子，推导了均质材料-复合型v型切口尖端附近的位移场和奇异应力场。 |
| 5. | Comparisons of the present numerical results with the available exact solutions state that the present method gives rapidly converging and accurate numerical solutions for penny - shaped interfacial crack problems in bimaterials as well as ordinary crack problems in homogeneous materials
在圆形片状裂纹的情况下，数值结果与现有理论解作比较的结果表明，数值结果与相应界面圆形片状裂纹和均质体圆形片状裂纹的精确解均吻合得很好。 |
| 6. | Based on the basic equations of the elasticity plane problem and the two airy stress functions in the thesis , stress singularity eigenequations and displacement fields as well as singular stress fields near the v - notch tip and the crack tip for homogeneous materials are obtained
本文基于弹性力学平面问题的基本方程，引入两个airy应力函数，推导了均质材料型切口尖端和裂纹尖端的应力奇异性特征方程及其附近的奇异应力场和位移场。 |
| 7. | Anechoic coatings " efficiency is getted from its front and back many layer ' s transfer loss compared . first , absorptive characteristic of homogeneous material is analyzed thoroughly . then wkb perturbation means are used to calculate absorption coefficient of the impedance transition structure in this paper
本论文首先对均匀材料的吸声特性做了深入的分析，并详细讨论了wkb微扰摄动法，利用wkb方法计算阻抗过渡结构的吸声系数。 |
| 8. | The dynamic behavior of an interface crack between two dissimilar half - planes of functionally graded materials ( fgms ) and homogeneous materials subjected to harmonic dynamic loading is investigated by means of the schmidt method under an assumption - the effect of the crack surface overlapping very near the crack tips is negligible
摘要在忽略界面裂尖端裂纹面相互叠入的条件下，对功能梯度材料与均质材料交界面上-型裂纹对简谐动载响应问题进行了分析。 |
| 9. | Then we consider the problem as a " conjunction " problem : according to the solutions for wave problem in interface between two conjunctive homogeneous elastic half - spaces as well as the scattering problem of sh - waves by an arbitrary - shape - cavity in homogeneous material , we divide the elastic space with an interface cavity into two parts along the interface , each is elastic half space with an arbitrary - shape - canyon . and then dividing surfaces are loaded with undete rmined antiplane forces , and with some antiplane reacting forces to appear cracks
然后将界面任意形孔洞和孔边裂纹对sh波的散射问题视为“契合”问题：即从两个相互契合的完整弹性半空间的界面波动问题和弹性均匀介质中任意形孔洞对sh波散射的解答出发，沿界面处将含孔洞的弹性空间剖分为两个含有任意形凹陷的弹性半空间，在其剖分表面上加置未知的反平面荷载，在出现裂纹的位置加置反平面反力构造出裂纹。 |
| 10. | However , the performance of thermoelectric materials can be optimized if various materials with different properties are arranged along the temperature axis to form a graded or laminated thermoelectric material . in the present work some homogeneous materials such as bi2te3 - and fesi2 - based thermoelectric materials as well as pseudo - binary alloys ( pbte ) 1 - x ( snte ) x ( 0 x 1 ) have been prepared , their thermoelectric properties have been measured , and the possibilities for constitution of laminated structures have been discussed . the processes for preparation of laminated thermoelectric materials and the thermal stress buffer layers sandwiched between thermoelectric material segments have been studied
本项工作主要包括： 1 )均质热电材料bi _ 2te _ 3基、 fesi _ 2基以及膺两元合金( pbte ) _ ( 1 - x ) ( snte ) _ x ( 0 x 1 )的制备与性能研究，适合于制作梯度功能材料的各种均质热电材料的筛选； 2 )异种材质及近乎相同材质叠层材料制备工艺的研究以及热应力缓和层的研究) ； 3 )采用sem 、 edax 、 empa 、 xps等多种手段，对界面处微观组织结构、扩散与反应的分析； 4 )采用数学建模计算及实验测量，对两元和多元叠层热电材料的结构设计以及性能和热稳定性的研究。 |
