In order to verify the effectiveness of steep-front impulse voltage test in finding the internal defects in composite insulators, some defects at different places inside the composite insulators are simulated.
为了检验陡波试验对于发现合成绝缘子内部故障的有效性,分别模拟绝缘子内部不同部位有导电性、半导电性通道,小气泡长气泡和芯棒与护套间不粘连故障的绝缘子,并分别在故障绝缘子和正常绝缘子上施加不同陡度的陡电压波,同时用有限元分析软件计算绝缘子的电场分布,以确定绝缘子在陡波试验中是否会击穿,计算结果与实验结果相一致,研究结果表明陡波试验在检验合成绝缘子内绝缘严重故障方面很有效,但对一些小的故障不易检出。
In order to verify the effectiveness of steep-front impulse voltage test in finding the internal faults of composite insulator, some insulators with faults, including conductive channel, semi-conductive channels, airy channel, partial little air bubble that occur separately at different place, are modeled.
为了检验陡波试验对于发现合成绝缘子内部故障的有效性，分别模拟了绝缘子内部不同部位有导电性、半导电性通道，小气泡，金属杂质，长气泡以及芯棒与护套间不粘连故障的绝缘子，并从三维静电场计算和用不同陡度的陡波试验两个方面进行了验证。
The static oxidatio n test and thermal shock tests were cond ucted to evaluate the oxidation kinetics and thermal shock cyclic lifetime of th e TBCs.
3种类型试样的100h,1050℃静态氧化试验及1050℃热震试验结果表明:3层涂层较双层涂层的氧化阻力提高,双层涂层的热震阻力最佳,氧化阻力最差。
FEM software,ABAQUS,is used to model the landing gear for an aircraft,and carry out the numerical simulation for drop test.
利用大型商用有限元软件ABAQUS对某机起落架建模,并进行落震试验数值模拟。
The model is verified by the drop tests of fixed orifice landing gear.
利用定油孔起落架的落震试验对该模型进行了校验。
The mathematic model of predicting the horizontal load subjected to aeroplane undercarriage tyre based on the drop tests was built by analyzing dynamic loads acting on drop test platform which is supported by three poles, and the coefficients in the mathematic model were determined by means of the least square method according to the results of static tests.
通过分析 3点支撑落震平台的动态受力情况 ,确定了起落架机轮投放到落震平台上后 ,落震平台水平方向的各种载荷情况 ,从而利用测量落震平台水平载荷的间接测量方法 ,建立了起落架机轮水平载荷测量方法的数学模型 ,并采用在落震试验台水平方向上进行试验标定的方法 ,确定了数学模型中的有关待定系数 。
In this paper a series of seismic settlement tests of recently deposited muddy soil in Nanjing city were performed by WFI dynamic cyclic triaxial apparatus made in England.
本文通过英国WFI振动三轴仪对南京新近沉积淤泥质土做了一系列的震陷试验,得到了不同围压、固结比和轴向动应力下的试验结果。
Study on the Effectiveness of Steep-front Impulse Test of Composite Insulator;
合成绝缘子陡波试验有效性的试验研究
Motor vehicles - Steep hill climbing - Test method
汽车爬陡坡试验方法
Experimental Study on Dynamic Process of Soil Erosion on Loess Slope;
黄土地区陡坡水蚀动力过程试验研究
Bodily Form Design and Experimental Research on Cros swise Outflow Chute Energy-Dissipation Pond
横向出流陡坡消能塘体型设计与试验研究
Hydraulic Characteristics of Supercritical Flow of Energy Dissipation by Suspension Girder in Steep Gradient;
陡坡急流悬栅消能水力特性的试验研究
Mechanical borehole stability test study in highly-dipped laminated formation
高陡层理性地层井壁稳定性模拟试验研究
Model tests on bridge pile foundation in high and steep rock slopes
高陡岩质边坡上桥梁基桩模型试验研究
Centrifuge Model Test on the Soil Nailing High and Steep Loess Slope in Tunnel Myongdong;
隧道明洞段黄土高陡边坡土钉支护的离心模型试验研究
A compression wave in decelerating flow steepens.
压缩波在减速流中变陡。
Apollo-Soyuz Test Project
阿波罗-联盟试验项目
ultrasonic angle beam testing
超声波斜角探伤试验
Test Method of Measuring S-wave Velocity of Rock by V-Shaped Groove on Specimen
刻槽法拾取岩样横波波速的试验方法
Please express the main advantages of ultrasonic testing in non-destructive testing.
请叙述非破坏试验中超音波试验的主要优点。
STATISTICAL DISTRIBUTIONS BETWEEN AVERAGE WAVE SLOPE AND AVERAGE WAVE AGE FOR WIND WAVE IN NANJI SEA AREA
南麂海域风浪的平均波陡与平均波龄统计分布
Experimental Study of Oblique Wave Force Acting on a Vertical Breakwater Head
斜向波对直立式防波堤堤头作用的试验研究
Model Simulation and Testing Research on Traveling Wave Type Ultrasonic Motor;
行波型超声波电机的模型仿真与试验研究
Testing Study on Relationship among P-Wave Velocity and Physico-Mechanical in Xiashu Loess;
下蜀黄土超声波波速与物理力学性质试验研究
Evaluation on experiment of Mean Time to Failure for Surface acoustics wave filter for Base Station
基站用声表面波滤波器平均寿命的试验评估