论文部分内容阅读
一、概况近些年来,国外电子万能试验机发展得比较迅速。这是由于这种试验机具有许多优点,在一定程度上满足了现代材料试验的需要。所谓电子万能试验机,目前系指应用电子设备对负荷和变形进行精确的控制、测量和自动记录,甚至对试验结果进行处理和显示等。这种试验机,负荷范围很宽,负荷级数较多。最大负荷达50吨。负荷测量系统,多数采用电阻应变片式负荷传感器,反应快、精度高。示值精度多为记录仪所用负荷量程的±0.5%,有的为负荷量程的±0.25%。另外,有的试验机采用电感式负
I. Overview In recent years, foreign electronic universal testing machine developed relatively rapidly. This is because the test machine has many advantages, to some extent, to meet the needs of modern materials testing. The so-called electronic universal testing machine, currently refers to the application of electronic equipment for load and deformation of the precise control, measurement and automatic recording, and even test results for processing and display. This test machine, a wide range of load, the load series more. The maximum load of 50 tons. Load measurement system, the majority of resistance strain gauge load cell, fast response, high accuracy. The indication accuracy is mostly ± 0.5% of the load range of the recorder, and some ± 0.25% of the load range. In addition, some testing machines using inductive negative