Based on the theory of elastodynamics, the interaction of elastic surface acoustic waves with surface-breaking defect is studied numerically by using the finite element method.
基于弹性动力学理论，采用有限元方法数值模拟了声表面波沿金属表面传播及其与表面缺陷相互作用的过程。
Two sorts of echoes caused by the reradiation of elastic surface wave have been observed in experimentation: the radial surface backscattering wave and the longitudinal surface backscattering wave.
实验观测到两类由弹性表面波的再辐射产生的回波：径向表面反向散射波和纵向表面反向散射波。
Imagine an elastic band stretched over the surface of an apple. The band can slowly shrink, moving as though it is slipping from the surface, until it becomes just a dot on the apple's skin.
试想一下，有一个橡皮圈箍在苹果的表面上，然后这个橡皮圈慢慢的收缩，就像从苹果表面上滑落一般的收缩，直到它变成了一个点。
The track area is an elastic rubberized surface containing up to 10 lanes each just over one meter wide.
跑道区的表面铺设了弹性的橡胶，一般最多设有10根跑道，每根跑道宽1米。
Elastic not enclosed in a channel must have a soft-brushed surface if worn next to the skin.
非封闭在管道中的橡筋如果需接触肌肤必须有柔软的拉绒表面。
In this paper, we present some work on the surface instability of elastic half Spaces.
本文综合报道有关弹性半无限体表面稳定性的若干工作。
The results show that the micro rotational Angle induced by the tooth surface elastic deformation has definite effect on meshing points.
结果表明，齿面弹性变形引起的齿轮轮齿的微小转动对啮合点的最终位置有一定的影响。
It is another hot point to study the surface elastic free energy of LC.
液晶的表面弹性自由能是目前表面物理学的又一研究热点。
Inorganic compound waterproof coating quality elastic new concept: cement - produce waterproof substrate surface affinity, giving water proofing property, waterproof strength, hardness.
无机质弹性复合防水涂膜新概念：水泥—产生防水基材表面亲和力，赋予防水性、防水强度、硬度；
Three different lapping regions, including crater area of diamond surface, dissociation area and smooth area, were observed during diamond lapping process by elastic float lapping.
实验观察到金刚石弹性浮动研磨过程中存在着三个不同的加工区域：金刚石表面凹坑区、解理区、光滑区。
Laser generated surface acoustic waves provide a useful tool for determining the elastic properties of coatings.
激光激发声表面波提供了评价涂层或薄膜的弹性性质的有效手段。
This method simulates the boundary in half-space into a large crack containing in an infinitely great elastic medium, by which the surface crack in arbitrary shape can be well-treated.
通过把半空间的边界模拟成一个包含在无穷大弹性介质中大裂纹，此法能很好的处理具有任意表面形状的表面裂纹。
The theory expresses the sound fields by a superposition of various surface elastic waves-circumferential waves and reveal the vibro-acoustic coupling mechanism in viewpoint of wave.
此理论将声场表示成各种表面弹性波-环绕波的再辐射的叠加，从波动的角度揭示声-振耦合机理。
The most pivotal technical problem of building high-speed railway on soft soil is strictly controlling post-construction settlement of subgrade and its elastic deformation of top surface.
在软土地基上修建高速铁路，其最关键的技术问题就是严格控制路基的工后沉降及列车高速运行时路基顶面的弹性变形。
Using scanning electron microscope observation comparison carbonization boride cermet processing surface elastic performance and processing surface deterioration level.
利用扫描电镜观察、比较碳化硼陶瓷加工表面弹性性能及加工表面变质层。
To obtain the exact object shape, the forming surface of MPF must be corrected based on the deformation of elastic cushion.
为得到精确的成形件，在成形面造型时必须基于弹性垫的变形对基本体群成形面进行修正。
The overcoming blinding mechanism of elastic screen surface was accounted for.
揭示了琴弦筛面、弹性筛面克服堵孔的机理。
It is very difficult to control the dimension and surface quality when processing elastic material.
对于非金属弹性材料的加工，难点在于如何控制尺寸及表面质量。
The curvature radius was derivated and the contact stress of the three-arc-sect isometric type surface was calculated through the elastic dynamics theory.
应用弹性力学理论，推导出接触点的曲率半径，对三弧段等距型面联接进行接触应力计算。
The absorption coefficients approach to zero inside the target nucleus, so that the elastic scattering takes place at the surface region of nucleus.
光学势在核中的吸收系数趋于零，因此弹性散射主要发生在核的表面。
Features: carpet surface smooth uniform, white soft and elastic.
产品特点：毡面平整均匀，洁白柔软，富有弹性。
Furthermore, the influence of the residual stress to the surface strain of the material in the elastic zone is studied.
进而探讨了残余应力对弹性区材料表面应变释放的影响。
We analyse the influence of the elastic deformation and the surface roughness for lubricating characteristics and give a thought of cutting groove in piston ring.
分析了弹性变形、表面粗糙度对润滑性能的影响，并提出了开槽环的设想。
If we start with elastic wave equation, surface wave energy can be considered as well.
若从弹性波方程出发，则可考虑面波能量。
Nylon 66 was effectively toughened with potassium titanate whiskers which were surface modified with an elastic epoxy resin.
钛酸钾晶须用弹性体表面改性后实现了对尼龙66的有效增韧。
Displacement function for an elastic half space with half cylindrical elastic inclusion bearing steady state line source force on horizontal surface is first given.
首先，给出含有半圆柱形弹性夹杂的弹性半空间表面上任意一点、承受时间谐和的出平面线源荷载作用时的位移函数。
The patching coat consists of the primary layer made of polyether polyurethane and the surface layer made of elastic polyurethane.
修补的涂层由聚醚聚氨酯底层和弹性聚氨酯面层组合而成。
Frictional coefficients were mainly related with nanotube diameters of specimens, next with surface roughness and elastic modulus of specimens.
摩擦系数主要受纳米管径的影响，还受表面粗糙度和弹性模量的共同影响。
Frictional coefficients were mainly related with nanotube diameters of specimens, next with surface roughness and elastic modulus of specimens.
摩擦系数主要受纳米管径的影响，还受表面粗糙度和弹性模量的共同影响。
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