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hammer test
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  锤试验
     On the basis of heavy hammer test, the transmissibility of the aquifer in the well Lu-29 has been estimated. It equals 10.8m2/d.
     鲁29井通过重锤试验求出了含水层的导水系数为10.8m~2/d,这比抽水试验给出的小一些,但数量级相同。
短句来源
     The working principle of a rotary impact strength test stand for automotive driving axle is described,and the equivalent conditions between the drop hammer test and rotation test are given in this paper. Moreover,a brief description of the configuration of the software and hardware for the test stand system is made.
     介绍了旋转式汽车传动轴冲击强度试验台的工作原理,推出了落锤试验与旋转试验的等效条件,并对试验台系统软硬件的设计作了简介
短句来源
     Based on the perimeter-area relation in fractal geometry and the linear recurrent analysis, image processing and furcated dimension calculation have been done for six explosive samples (e. g. TATB, etc. ) in drop hammer test.
     根据分形几何的周长—面积公式及线性回归原理,对TATB等六种炸药的落锤试验的分幅图像进行了图像处理和分形维数计算。
短句来源
     The large and irrational residual stress existing in the rail(tensile stress in the rail head and the rail foot,compressive stress in the rail web) would affect the application and the drop hammer properties,resulting in the abrupt fracture of the rail on line or the unqualified the drop hammer test.
     钢轨内部存在大且不合理的残余应力 (轨头、轨底拉应力 ,轨腰压应力 ) ,将会影响钢轨的使用和落锤性能 ,严重时会造成线路钢轨的突发性断裂或落锤试验不合格。
短句来源
  “hammer test”译为未确定词的双语例句
     12t Drop hammer test machine
     12t落锤试验台
短句来源
     Calculation of equivalent viscous damping ratio of linear structure using Matlab based on impulse hammer test
     利用Matlab和锤击法的线性结构阻尼试验
短句来源
     By using the model analysis method and hammer test, the model parameters and model shapes are obtained based on the force and response signal processing.
     本文利用试验模态分析技术,通过冲击锤激振试验,对激振力信号和响应信号处理的基础上,获得机床结构的模态参数和振动模型。
短句来源
     A number of shock waves, generated from simulating percussive drill- ing, have been measured using drop hammer test device and dynamic mea- surement system for shock wave.
     模拟冲击凿岩原理,采用落锤试验台及应力波电测装置,测定了冲击钎杆时产生的单次脉冲应力波图形。
短句来源
     The frame photograph of explosive samples under drop hammer test have a furcate structure, in which the fractal dimension of the explosive is related to its impact sensitivity.
     炸药样品在落锤撞击下,其分幅图像具有分形结构,同时,它的分形维数与炸药感度有关。
短句来源
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  相似匹配句对
     In Test
     iM测试
短句来源
     Test
     测试
短句来源
     12t Drop hammer test machine
     12t落锤试验台
短句来源
     Study on equipment for drop hammer dynamic tear test
     落锤式动态撕裂试验装置
短句来源
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  hammer test
In existing structures mechanical damage of concrete has been practically estimated from the strength by a compression test and a rebound hammer test.
      
An examination of the Clegg impact hammer test with regard to the playing performance of synthetic sports surfaces
      
It is considered Equotip testing has advantages over the commonly used Schmidt hammer test.
      
In general, these results show that there is good correlation between impact hammer test results and shaker test results at lower frequencies.
      
Currently a hammer test to detect a hollow sound was the most likely method.
      


The short life of drill string is mainly caused by premature fracture of steel rod and the failure of tapered shank of bit due to expansion.In this paper, the determination of the longitudinal stresses of steel rods and the expansive loads acted upon the tapered shanks of bits is described. The determination is conducted in a series of drop-hammer tests in 6 different types of media, including steel anvil,hard taconite, lead block, rubber, sand and free air, under simulated working condition of a rock...

The short life of drill string is mainly caused by premature fracture of steel rod and the failure of tapered shank of bit due to expansion.In this paper, the determination of the longitudinal stresses of steel rods and the expansive loads acted upon the tapered shanks of bits is described. The determination is conducted in a series of drop-hammer tests in 6 different types of media, including steel anvil,hard taconite, lead block, rubber, sand and free air, under simulated working condition of a rock drill. For YT-25 drill, the max. longitudinal stress in drill steel amounts to 5300-6000kg/cm2. By analyzing the aforementioned measurements and computations, a theoretical basis for the selection of materials and heat-treatment procedures of drill steels and drill bits is proposed.

钎头、钎杆早期折断和胀裤是目前钎具寿命不高的主要原因。作者在模拟凿岩机工作条件的落锤试验台上,对六种介质(钢砧、坚硬铁矿、铅、橡胶、河沙以及悬空等)测定了钎头、钎杆的轴向应力和胀裤力。对于YT—25型凿岩机,钎杆中最大轴向应力可达5300~6000公斤/厘米~2。根据测定结果,本文提出了分析意见,为钎杆和针头选材和制订热处理工艺提供了依据。

A new dynamic substructure method—Superelement method of modal synthesis is developed on the basis of dynamic transformation and superelement modal analysis. This superelement method has been used to predict the principal normal mode characteristics of an ideal model of a 5,000 ton large hatch barge with 1224 degrees of freedom. The calculated numerical values are compared with test results obtained through system identification by hammer testing and measuring in—plane vibration by Moire method....

A new dynamic substructure method—Superelement method of modal synthesis is developed on the basis of dynamic transformation and superelement modal analysis. This superelement method has been used to predict the principal normal mode characteristics of an ideal model of a 5,000 ton large hatch barge with 1224 degrees of freedom. The calculated numerical values are compared with test results obtained through system identification by hammer testing and measuring in—plane vibration by Moire method. The degree of agreement is satisfactory

根据动力变换原理和超单元的模态分析,本文导出一种新的动态子结构法—模态综合超单元法。用这一方法预测了具有1224个自由度的5000吨大舱口驳船理想模型的主要模态特性,所得数值结果与模态识别测试及Moire干涉横向测振数据比较,其吻合程度是令人满意的。

A number of shock waves, generated from simulating percussive drill- ing, have been measured using drop hammer test device and dynamic mea- surement system for shock wave. The most important conclusions derived from these measurement include that the stress peak of the shock wave is proportional to the piston impact velocity, and inversely proportional to the ratio of cross section area of the drill rod to the area of the piston end surface, which is used for impacting the drill rod; and that the length...

A number of shock waves, generated from simulating percussive drill- ing, have been measured using drop hammer test device and dynamic mea- surement system for shock wave. The most important conclusions derived from these measurement include that the stress peak of the shock wave is proportional to the piston impact velocity, and inversely proportional to the ratio of cross section area of the drill rod to the area of the piston end surface, which is used for impacting the drill rod; and that the length of lasting time not only is proportional to the piston length but also in- creases with the increase of the contact area between drill rod and piston.

模拟冲击凿岩原理,采用落锤试验台及应力波电测装置,测定了冲击钎杆时产生的单次脉冲应力波图形。研究表明:脉冲应力波的应力峰值与活塞冲击速度成正比,与钎杆和活塞冲击端横断面积之比值成反比;其持续时间与活塞的长度成正比,并随钎杆和活塞冲击端的接触面积增大而增加。

 
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