用光放大原理与SPSS测定钢丝的杨氏模量  

Measurement of Moung's Modulus of Steel Wire by Optical Amplifier Principle and SPSS

作　　者：谢有飞 王新春[1] 祝飞霞[1] 

机构地区：[1]楚雄师范学院物理与电子科学学院,云南楚雄675000

出　　处：《楚雄师范学院学报》2014年第3期39-43,共5页Journal of Chuxiong Normal University

基　　金：国家特色专业项目资助;项目编号:12467

摘　　要：使用杨氏模量测定仪,望远镜横直尺,应用光放大原理,从理论上推导出系统镜尺距离与系统长度和负重的复合量具有线性关系。在负重一定情况下,采用一次性增减砝码的测量方案,测量实验数据,引入Spss线性估计功能分析实验数据,得出系统镜尺距离与系统长度和负重的复合量的定标曲线,并验证出镜尺距离与复合量存在线性关系,由此标定出钢丝的杨氏模量,用置信概率为95%的不确定度,对测量的数据和实验结果进行评价,最终得到更为可靠合理的实验结果。Young＇ s modulus tester, telescope and rule are employed to deduce the linear relationship between the distance of telescope ＆ rule and compound variable of system length ＆ weight - bearing ac- cording to the optical amplifier principle. When the weight -bearing is given, the measurement scheme of one -time increase or decrease of weight is adopted to measure the experiment data. Then the linear esti- mation of SPSS is introduced to analyze the experiment data and obtain the calibration curve between dis- tance of telescope ＆ rule and compound variable of system length ＆ weight - bearing. Furthermore, the linear relationship between distance of telescope ＆ rule and compound variable of system length ＆ weight - bearing is verified and the young＇ s modulus of steel wire calibrated. Finally, the experiment data and re- sult are evaluated and the uncertainty confidence probability is found to be 95%. It＇ s shown that we have gained reasonable experiment results.

关 键 词：杨氏模量测量系统 光放大原理 SPSS线性估计 不确定度分析 杨氏模量 

分 类 号：TG142.1[一般工业技术—材料科学与工程]