摘要
如何科学有效的按照标准要求实现应力速率及应变速率控制方式切换,最终得到准确可靠的试验指标值,是目前金属拉伸试验的重要问题;在深入分析金属材料拉伸本构模式基础上,实现了在试样拉伸过程中按标准自动切换控制方式并自动判别材料本构模式,自动测定弹性模量E、屈服限sσ、条件屈服限σP0.2、延伸率δ、强度限σb等,在工程实际中取得了良好的应用效果。
How to switch control mode of stress rate and strain rate scieutifically and effectively according to standard and then obtain test indexes exactly and reliably is an important problem in metal tensile test, On the analysis of constitutive modes of metallic materials, the measurement and control system can switch control mode automatically according to standard in the tensile test process and judge constitutive mode of material automatically. At the same time, it can automatically measure elastic modulus E, yield strength σs, proof strength σp0.2, percentage extension δ, tensile strengthσb, etc. All of these mentioned above have applied in industry and obtained good effect.
出处
《计算机测量与控制》
CSCD
2005年第12期1322-1324,共3页
Computer Measurement &Control
关键词
金属拉伸试验
控制方式切换
本构模式
metal tensile test
control mode switching
constitutive mode
