| 拉力试验机测量原理 |
| 添加时间：2019/1/29 15:31:22 浏览次数： |
| 1、拉力试验机力值的测量是经过测力传感器、扩大器和数据处置系统来完成测量。从资料力学上得知，在小变形前提下，一个弹性元件某一点的应变ε与弹性元件所受的力成正比，也与弹性的变构成正比。以S型试验机传感器为例，当传感器遭到拉力P的效果时，因为弹性元件外表粘贴有应变片，由于弹性元件的应变与外力P的巨细成正比例，故此将应变片接入测量电路中，即可经过测出其输出电压，然后测出力的巨细。 1. The measurement of the force value of the tension testing machine is completed by the force sensor, enlarger and data processing system. It is known from data mechanics that under the condition of small deformation, the strain e of an elastic element at a certain point is proportional to the force acting on the elastic element and also to the change of elasticity. Taking the sensor of S-type testing machine as an example, when the sensor is subjected to the effect of tension P, the strain gauge is pasted on the surface of the elastic element. Because the strain of the elastic element is proportional to the size of the force P, the strain gauge is connected to the measuring circuit, and the output voltage can be measured, and then the strength can be measured. 2、形变的测量经过形变测量安装来测量，它是用来测量试样在实验进程中发生的形变。 该安装上有两个夹头，经由一系传记念头构与装在测量安装顶部的光电编码器连在一同，当两夹头间的间隔发作转变时，带动光电编码器的轴扭转，光电编码器就会有脉冲旌旗灯号输出。再由处置器对此旌旗灯号进行处置，就可以得出试样的变形量。 2. Deformation measurement is measured by the installation of deformation measurement. It is used to measure the deformation of sample in the process of experiment. There are two chucks on the installation. The photoelectric encoder is connected with the photoelectric encoder installed on the tdianzugui.37ix.com.cnmuzhisuxw.37ix.com.cnbianyaqi.37ix.com.cn shidiaogyp.37ix.com.cnhaibaiyu.37ix.com.cnshengtaim.37ix.com.cnop of the measurement installation through a series of biographical ideas. When the interval between the two chucks changes, the shaft of the photoelectric encoder is driven to twist, and the photoelectric encoder will have a pulse signal output. The deformation of the sample can be obtained by disposing of the signal by the disposer. 3、横梁位移的测量其道理同变形测量大致一样，都是经过测量光电编码器的输出脉冲数来取得横梁的位移量。 3. The principle of measuring the transverse beam displacement is similar to that of deformation measurement. The transverse beam displacement is obtained by measuring the number of output pulses of photoelectric encoder. |
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