surface crack

According to the features of surface defects, introduce oval surface crack model and dynamical thermal stress model, calculation formula of dynamic thermal stress intensity factor of crack is obtained.

针对表面裂纹特性，引入表面半椭圆形裂纹模型，结合动态热应力模型，得到动态热应力裂纹强度因子计算公式。

互联网摘选

Analysis of Fatigue Life of Thick-Wall Cylinder with Inner Surface Crack Subjected to High Pressure

具有内表面裂纹高压厚壁圆管的疲劳寿命分析

互联网摘选

Can increase genuine leather's transverse tear strength, grain surface crack intensity and tensile stretch after using.

使用后可有效增加真皮的抗撕裂强度 、 粒面崩裂强度,还可增加真皮的伸长率.

互联网摘选

Experimental research on stress intensity factor for surface crack at external thread root of threaded connection

螺纹联接外螺纹牙底表面裂纹应力强度因子的实验研究

互联网摘选

The longitudinal surface crack on thin slab is a serious quality defect casting and rolling process.

薄板坯表面纵裂是连铸连轧生产线上的严重质量缺陷.

网络文摘精选

The principle and method for testing surface crack through direct current potential difference are introduced.

首先介绍了直流电位法&裂纹扩展片检测裂纹的方法和原理。

互联网摘选

By analysis, FT or UT is suitable for testing surface and near surface crack of large parts, and UT is suitable for internal tiny crack.

通过分析，得出检测大型部件表面和近表面缺陷时，选用涡流或超声波检测方法，检测埋深较大的内部微裂纹时，应用超声波进行定位定量检测；

互联网摘选

Long surface crack of pressure vessel is idealized as a single edge crack of long atrip in this Paper.

本文把压力容器长表面裂纹简化为狭长条的单边裂纹。

互联网摘选

The method can be used for most of mode ⅰ crack including internat crack and surface crack subjected to tension, bending or both of them.

对于大多数Ⅰ型裂纹都可以使用该方法来测定K I，包括内埋裂纹，边裂纹，载荷包括拉、弯或拉弯复合。

互联网摘选

By using the numerical Laplace inversion method, the variations of the temperature distribution along the crack surface and extended line and transient thermal stress intensity factors are presented.

利用Laplace数值反演方法，给出了裂纹面及延长线上的温度分布及动态热应力强度因子随时间变化的规律。

互联网摘选

Finite Element Method to Tracing the Fatigue Growth of Surface Crack of Out corner of Cylindrical Pressure Vessel Nozzles

圆筒型容器接管外拐角表面裂纹疲劳扩展的有限元跟踪

互联网摘选

The aspect of researching longitudinal surface crack is pointed out.

提出了今后研究纵裂纹的方向.

网络文摘精选

Subsurface inclusion is one of the reasons causing surface crack of rolled steel.

皮下夹杂是造成表面裂纹的原因之一.

网络文摘精选

Firstly, the basic theory of surface crack propagation is introduced. Then, tests on surface crack propagation of stiffened panel are done.

首先本文介绍了表面裂纹及其疲劳扩展的基本理论，然后试验研究了疲劳裂纹扩展规律。

互联网摘选

Stress Intensity Factor Research about a Thick-walled Cylinder with an Internal Semi-elliptical Surface Crack

厚壁筒内表面椭圆裂纹的应力强度因子研究

互联网摘选

The development of the surface crack in the fatigue failure of a large-scale tubular K-joint specimen has been measured using alternating current potential drop ( ACPD) technique.

用交流电势能落差法（ACPD）测量了一个大型K节点在疲劳破坏过程中表面裂纹增长和破坏过程。

互联网摘选

Glass is a kind of high-strength inorganic non-metallic material, but because of the micro-crack in the surface, glass actual strength is less one-percent of its theoretical strength.

玻璃本身是一种高强度材料，由于受表面微裂纹的影响，玻璃的实际强度仅仅是其理论强度的几百分之一。

互联网摘选

He article analyze from the design, material, start construction aspects creation reason of building surface crack, and aimed at ground to put forward concrete prevention measure.

本文从设计、材料、施工三慷慨面分析楼面裂缝的产生原因，并针对性地提出了具体预防措施。

互联网摘选

Triangle crack, linearity crack and slag eye are main form of surface wrapped slag in billet.

三角口裂纹 、 直线裂纹和渣孔是连铸坯表面夹渣的主要表现形式.

网络文摘精选

Eddy Current Testing Surface Crack of Hub Based on Wavelet Transform

基于小波变换的轮毂表面裂纹电涡流检测系统

互联网摘选

A new technique by computer has been used to trace fatigue growth of surface crack of out corner of cylindrical pressure vessel nozzles by using the methods of 1/ 4 displacement and finite element.

运用1/4点位移法和有限元技术对圆筒型容器接管外拐角表面裂纹扩展时应力强度因子的变化作了计算机数值跟踪。

互联网摘选

Fine ceramics ( advanced ceramics, advanced technical ceramics)-determination of fracture toughness of monolithic ceramics at room temperature by the surface crack in flexure ( scf) method

细陶瓷-单块陶瓷常温断裂韧度试验方法-弯曲表面龟裂法

互联网摘选

C/ C composites matrix for embedding method for SiC coating effect is significant, SiC coating with carbon matrix coefficient of thermal expansion difference, causes micro crack generation in coating surface.

C/C复合材料基体对包埋法制备SiC涂层的影响较为显著，SiC涂层由于与炭素基体热膨胀系数差异，引起涂层表面微裂纹的产生。

互联网摘选

Through finite element numerical calculation and experiment test on pressure vessel containing inner portrait surface crack, the results show that;

通过对一台含内壁纵向表面裂纹的实物压力容器的有限元数值计算和实验测试，结果显示：初始椭圆形表面裂纹在疲劳扩展过程中形状逐渐趋圆并保持圆形继续扩展。

互联网摘选

Quenching crack deep and long, straight fracture , fracture surface without oxide color.

淬火裂纹深而细长, 断口平直,破断面无氧化色.

互联网摘选

The residual deleterious elements in steel lead to products occurring red brittleness surface crack and temper brittleness, and lead to hot strength of heat resistant steel decreasing.

钢中的残余有害元素致使钢材产生红脆性表面裂纹和具有回火脆性倾向，并使耐热钢的热强性降低。

互联网摘选

Optimization of surface crack detection of speed reducer gear

减速机齿轮表面探伤优化选择

互联网摘选

Surface crack analysis of V-typed steel guide

V型钢导轨表面裂纹分析

互联网摘选

Calculation of stress intensity factor about a thick-walled cylinder with an surface crack under autofrettage stresses

残余应力下厚壁筒表面裂纹的应力强度因子计算

互联网摘选

Penetrant flaw detection agent was used to detect the backing weld surface, and the number of cracks was indicated by surface crack rate.

打底焊缝正面使用渗透探伤剂探伤，用表面裂纹率表示裂纹的数量。

互联网摘选