金属拉伸试验中基于刻线的非接触实时应变测量  

Non-contact Real-time Strain Measurement in Uniaxile Tensile Test Based on Reticle

作　　者：门延武[1] 李新军[1] 吕晓东[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100083

出　　处：《机械工程与自动化》2007年第5期83-85,共3页Mechanical Engineering & Automation

摘　　要：在金属材料单向拉伸试验中,利用直线拟合技术,摒弃了亚像素检测方法,建立了基于刻线的非接触实时应变检测系统,实现了金属材料在加载过程中长度方向相对应变的实时测量。试验结果表明,该测量方法能够取代目前使用引伸计的方法,其测量精度已达到实际应用的要求。　Using linear fitting technique,a non-contact realtime measurement system based on reticle is established and subpixel detecting method is abandoned in this paper.The system has been developed and successfully applied to metallic tension to get the relative strain of length.Result shows that this method can replace the conventional method of using extensometer basically and the measuring precision has met the practical requirement.

关 键 词：单向拉伸试验 直线拟合 刻线 相对应变 实时测量 

分 类 号：TG35[金属学及工艺—金属压力加工] TP274[自动化与计算机技术—检测技术与自动化装置]