AG-A系列电子万能材料试验机是我国从国外引进的数量比较多的一种现代大型精密测试设备。本文所述的测定材料比例极限的方法是在该机上开发的一个新功能,测试结果可自动打印输出。 一、测试原理 通常,测定材料比例极限的方法,是利用引伸计和载荷传感器在试样拉伸试验过程中,在x-y函数记录仪上自动绘出试样的应力与应变的关系曲线。把图形经过适当放大,采用图 AG-A series of electronic universal testing machine is introduced from abroad, the number of more of a large modern large-scale precision test equipment. The method for determining the material ratio limit described in this article is a new feature developed on this machine that automatically prints out the test results. First, the test principle Usually, the method of determining the material ratio limit is the use of extensometer and load cell tensile test specimen during the x-y function recorder automatically plot the stress and strain curve of the sample. The graphics after appropriate amplification, the use of plans