| 驻波法测杨氏模量及误差分析 |
| |
| 引用本文： | 陈美华.驻波法测杨氏模量及误差分析[J].大学物理,2010,29(12). |
| |
| 作者姓名： | 陈美华 |
| |
| 作者单位： | 嘉应学院物理与光信息科技学院; |
| |
| 摘 要： | 驻波法运用驻波原理,采用人为控制金属丝形变,测出金属丝驻波基频,得出其张力,从而求出金属丝杨氏模量.相对传统方法,驻波法避免了金属丝直径和形变的测量,其不确定度基本上仅由千分尺精度决定,故而具有操作简单,测量准确度高的特点.
|
| 关 键 词： | 驻波 基频 张力 杨氏模量 不确定度 |
Standing wave method for measuring Young's modulus and its error analysis |
| |
| CHEN Mei-hua.Standing wave method for measuring Young's modulus and its error analysis[J].College Physics,2010,29(12). |
| |
| Authors: | CHEN Mei-hua |
| |
| Institution: | CHEN Mei-hua(School of Physics and Optical Information Technology,Jiaying University,Meizhou,Guangdong 514015,China) |
| |
| Abstract: | Using the standing wave theory,we propose a standing wave method for measuring Young's modulus.The method controls deformation of wire artificially and measures basis frequency of wire to obtain its tension and then Young's modulus.In comparison with traditional methods,the standing wave method avoids measuring diameter and deformation of the wire,thus,it is easy to operate.Furthermore,its uncertainty is mainly ruled by the micrometer precision.Hence,the method has high accuracy. |
| |
| Keywords: | standing wave basis frequency tension Young's modulus uncertainty |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
