双引伸计法同轴度测量仪的不确定度分析  

Uncertainty analysis of coaxiality measuring instrument with double extensometers

作　　者：洪刚 孟德文 见革军 宋洋 赵阳 HONG Gang;MENG Dewen;JIAN Gejun;SONG Yang;ZHAO Yang(NCS Testing Technology Co.,Ltd.,Beijing 100081,China)

机构地区：[1]钢研纳克检测技术股份有限公司,北京100081

出　　处：《物理测试》2021年第4期51-55,共5页Physics Examination and Testing

摘　　要：分析了双引伸计式同轴度测试仪的数学模型,建立了不确定度的评定方法,在高温蠕变持久试验机上进行了同轴度校准试验,参照JJF 1059.1—2012《测量不确定度评定与表示》计量技术规范,分析了不确定度评定中各个分量的来源并进行了综合评定,完善了同轴度校准的实际操作方法,提高了数据的准确性。The mathematical model of double extensometer coaxiality tester was analyzed. The method for the evaluation of measurement uncertainty was established. The coaxiality calibration test was carried out on a high-temperature creep endurance testing machine. According to technical specifications in JJF 1059. 1-2012 Evaluation and Expression of Measurement Uncertainty,the sources of each component in uncertainty evaluation were analyzed and evaluated comprehensively. The practical operation method of coaxiality calibration was improved,which improved the accuracy of data.

关 键 词：同轴度测量 双引伸计 不确定度分析 

分 类 号：TG83[金属学及工艺—公差测量技术]