用静态拉伸法与SPSS标定钢丝杨氏模量  

Calibrating Young′s Modulus with Static Stretching and SPSS

作　　者：岩稳 王新春[1] 祝飞霞[1] 王昆林[1] 司民真[1] 

机构地区：[1]楚雄师范学院

出　　处：《物理通报》2014年第6期79-82,共4页Physics Bulletin

基　　金：国家特色专业项目资助,项目编号:12467

摘　　要：针对测量杨氏模量的实验装置，用光放大原理，从理论上推导出系统长度、质量的复合量与系统标尺刻度差存在线性关系，采用静态拉伸法测量实验数据，引入SPSS的曲线估计功能分析实验数据，得到系统长度、质量的复合量与系统标尺刻度差的定标曲线，并验证出复合量与标尺刻度差具有线性关系，由此标定出钢丝的杨氏模量，用置信概率为95％的不确定度，对测量数据和实验结果进行分析和评估，最终得到更为可靠、合理的实验结果．For experiment device used for testing Young＇s modulus of steel wire, we apply amplification principle of light to deduce the linear relationship among the system length, compound mass amount and difference of system ruler scale. We apply static stretching data, introducing SPSS curve estimation, to analyze experiment data, and obtain the calibration curve among system length, compound mass amount and difference of system ruler scale. In addition, the linear relationship between compound amount and difference of system ruler scale is tested. Therefore, Young＇s modulus is obtained. We analyze and evaluate the experiment data with the uncertainty confidence probability of 95%. It＇s shown that we gain reasonable experiment result.

关 键 词：静态拉伸法 光放大原理 不确定度 SPSS曲线估计 杨氏模量 

分 类 号：O4-4[理学—物理] G652[文化科学—教育学]