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pulse hammer
相关语句
  脉冲锤
     The hardware of the system is built upon the general computer, including pulse hammer, electric charge amplifier, piezoelectricity sensor, A/D convertor etc;
     该系统的硬件部分以通用计算机为核心,包括脉冲锤、电荷放大器、压电式传感器、采集卡等;
短句来源
     In this paper, a pulse hammer method was used to carry out the modal test on a side wall of a Shanghai-50 gear-box, by which the modal parameters were identified.
     本文用脉冲锤法对上海-50变速箱的侧壁面进行了锤击试验,识别了其各模态参数。
短句来源
  “pulse hammer”译为未确定词的双语例句
     The theoretical basis of pulse hammer excitation method used to detect the damage and measure the dynamic elastic modulus of solid wood flooring is briefly explained. The method is then examined by finite element simulation test.
     介绍了脉冲锤击法检测实木地板损伤及测定其动态弹性模量的理论依据,并通过有限元模拟与试验验证了其可行性。
短句来源
     The results show that pulse hammer excitation can be used to effectively measure the natural frequency values and dynamic elastic modulus of solid wood flooring,and the latter is bigger than the static elastic modulus.
     试验结果表明:脉冲锤击法能有效地测得实木地板的固有频率与动态弹性模量,所得动态弹性模量值比静态弹性模量值稍大;
短句来源
  相似匹配句对
     The stress pulse was generated by the impact of a pendulum hammer.
     应力波由摆式重锤的冲击所产生。
短句来源
     Taking the Pulse
     脉冲爆震发动机技术的最新进展
短句来源
     On Arrythmia Pulse
     乍疏乍数脉之我见
短句来源
     Actual Measuring for Support Dynamic Stiffness of Bearing Pedestal of Turbogenerator Using Hammer Pulse Method
     用锤击法实测汽轮发电机轴承座的支承动刚度
短句来源
     Casting of Big Hammer
     大锤头的铸造技术
短句来源
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In this paper, a pulse hammer method was used to carry out the modal test on a side wall of a Shanghai-50 gear-box, by which the modal parameters were identified. Thus, the side wall was simplified as a vibration system with fourteen degrees of freedom. And the vibratioa equation set was established and solved according to single degree of freedom system under modal coordinates. The calculated values of vibration velocity at fourteen points on the side wall were compared with those measured interfacial...

In this paper, a pulse hammer method was used to carry out the modal test on a side wall of a Shanghai-50 gear-box, by which the modal parameters were identified. Thus, the side wall was simplified as a vibration system with fourteen degrees of freedom. And the vibratioa equation set was established and solved according to single degree of freedom system under modal coordinates. The calculated values of vibration velocity at fourteen points on the side wall were compared with those measured interfacial noise levels and coincidence was found. Finally, the dynamic modification was taken on the side wall of the gearbox according to above vibration model. And the noise reduction value of 1.4 dB(A) was obtained.

本文用脉冲锤法对上海-50变速箱的侧壁面进行了锤击试验,识别了其各模态参数。由此,将该侧壁离散简化成一个14自由度的振动系统,建立并求解了其振动方程组,并将求出的变速箱侧壁面各点振动速度值与实测的这些点的界面噪声值作了对比,证明趋势基本一致。最后,以此振动模型为理论依据,对变速箱壁面进行动态修改,取得了降低噪声1.4dB(A)的效果。

This paper describes the application of a self-designed resistance-strain torquue transducer to test the torque change between the starting and idling of two type of induStrial sewing-machines.So as to illustrate the close relationship between the machin's starting torque and starting process,the paper indicates the inadequateness of the rule now adopted in the sewing-mechine trade, of using the resistance acquired merely by 2 rotations per minute operation condition for the sewing-machine's starting torque....

This paper describes the application of a self-designed resistance-strain torquue transducer to test the torque change between the starting and idling of two type of induStrial sewing-machines.So as to illustrate the close relationship between the machin's starting torque and starting process,the paper indicates the inadequateness of the rule now adopted in the sewing-mechine trade, of using the resistance acquired merely by 2 rotations per minute operation condition for the sewing-machine's starting torque. The peper also bets with the use of pulse (hammer)-activation method and dynamic characteristic (natural frequency) of industrial sewing-meching,and to determine the magnitudes of acceleration and amplitude,etc,in idle running,thereby offering an approach,and the concrete measures for the manufacturers to improve the quality of their products.

本文阐述利用自行设计的电阻应变式转矩传感器测试两种工业适逢纫机起动过程与空载时的转矩变化情况,说明缝纫机的起动转短与其起动过程密切相关.文中指出,缝纫机行业中目前单以2r/min的工况获得的阻力矩作为缝纫机起动转矩的规定是不适宜的.本文还简述应用脉冲(锤击)激振法和动态信号处理分析技术确定工业缝纫机动态特性参数(固有频率)及空运转过程中的加速度、振福等量值.从而为厂家拟定提高产品性能的方案,并提出具体改进措施.

The theoretical basis of pulse hammer excitation method used to detect the damage and measure the dynamic elastic modulus of solid wood flooring is briefly explained. The method is then examined by finite element simulation test. The results show that pulse hammer excitation can be used to effectively measure the natural frequency values and dynamic elastic modulus of solid wood flooring,and the latter is bigger than the static elastic modulus. It is also found that the detecting point should be...

The theoretical basis of pulse hammer excitation method used to detect the damage and measure the dynamic elastic modulus of solid wood flooring is briefly explained. The method is then examined by finite element simulation test. The results show that pulse hammer excitation can be used to effectively measure the natural frequency values and dynamic elastic modulus of solid wood flooring,and the latter is bigger than the static elastic modulus. It is also found that the detecting point should be at or near the maximum amplitude of main vibration frequency while the impacting point should be at the greater amplitude and far from the detecting point. Finally,it is concluded that solid wood flooring damage can be detected precisely by using natural frequency values.

介绍了脉冲锤击法检测实木地板损伤及测定其动态弹性模量的理论依据,并通过有限元模拟与试验验证了其可行性。试验结果表明:脉冲锤击法能有效地测得实木地板的固有频率与动态弹性模量,所得动态弹性模量值比静态弹性模量值稍大;测试中,拾振点应选择在主振频率振型的最大振幅处或其附近区域,激振点应选择在离拾振点较远且振幅较大的区域;固有频率可对实木地板的损伤程度进行较好的判定。

 
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