现代科学仪器Issue(3)：21-26,6.
用于应力应变和疲劳显微分析的原位拉伸系统的研制
In-situ Tensile Testing System for Microscopic Analysis on Stress-strain and Fatigue
摘要
Abstract
Synchronizing detection has to be introduced into materials' testing systems in order to meet the need in industrial applications and fatigue theory. An in-situ tensile stage, which is integrated with fatigue testing components, is investigated by our laboratory. It is integrated in scanning electron microscope and can be applied in in-situ observations on the whole testing process on micro scale. In this system-, a DC servo motor actuates the mechanical components to apply tensile load to the specimen. Dedicated PID close loop controller chip for the motor was used in the micro tensile module control system based on PC 104 embedded system. To realize its high precision and stability, optimized algorithm to the key technologies such as data collection and original position holding were added. In this paper, the design of the tensile stage and the composition of hardware and software program are introduced. Results from the tensile testing using the in-situ tensile system are also exhibited, which provides sufficient information on materials' tensile properties on both macro and micro scale.关键词
拉伸试验/疲劳试验/同步原位微区观测/扫描电子显微镜Key words
Tensile test/ Fatigue test/ In-situ microscopic observation/ Scanning electron microscope分类
通用工业技术引用本文复制引用
杨洁,韩立,陈代谢,初明璋,林云生,刘俊标..用于应力应变和疲劳显微分析的原位拉伸系统的研制[J].现代科学仪器,2011,(3):21-26,6.基金项目
北京市自然科学基金重点项目(kz200810005003). （kz200810005003）
