利用霍尔元件测量金属丝的弹性模量  

Measuring Young modulus of wire with Hall element

作　　者：吴高米 崔敏[1] 王闯[1] 支辛蕾 万欣[1] 邓金祥[1] 张兵[1] 原安娟[1] 王丽香[1] 

机构地区：[1]北京工业大学应用数理学院,北京100124

出　　处：《物理实验》2014年第6期40-43,共4页Physics Experimentation

基　　金：北京高等学校青年英才计划项目(No.YETP1592);北京工业大学教育教学研究课题资助(No.ER2013C19)

摘　　要：将霍尔元件应用于拉伸法测弹性模量实验,直接测量了微小位移.结果表明,霍尔元件在均匀梯度磁场中霍尔电压与微小位移有良好线性关系,采用拟合法计算得到钢丝弹性模量为1.96×1011 Pa.Hall element,instead of optical lever,was used to measure Young modulus of wire with stretching method.The micro-displacement was directly measured.The results showed that there was a good linear relationship between the Hall voltage and the micro-displacement when Hall element moved in a magnetic field of uniform gradient.The Young modulus of steel wire was measured to be 1.96×1011 Pa.

关 键 词：霍尔元件 弹性模量 微小位移 

分 类 号：O343[理学—固体力学] TP212.13[理学—力学]