斜双镜光杠杆法测量金属丝杨氏模量

doi:10.14139/j.cnki.cn22-1228.2023.01.011

下载:

PDF (1850KB)
输出: BibTeX | EndNote (RIS)

摘要

利用双镜多次反射可有效提高光杠杆法的放大倍数，但需要额外装置确定反射次数。提出了斜双镜光杠杆法，通过一面与光杠杆的镜面斜对放置的大平面镜与光杠杆组合精准控制反射次数为 2 级，增加光程的同时增加了一次角度变化，将放大倍数提升为传统杠杆法的 4 倍。理论分析并实验验证了斜双镜法用于测量金属丝的杨氏模量，实验结果与理论分析吻合良好，证实方法和理论的有效性。并且，在不大于 80 cm 的有限空间内，实现了高达 84．36 倍的放大倍数。

	服务
	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	（）
	作者相关文章
	肖林轩
	杨阳
	王晓威
	闫涵
	吴峰
	李晓兰

关键词: 光杠杆杨氏模量放大倍数斜双镜反射

Abstract:

The traditional method can effectively improve the magnification，but additional devices are needed to determine the reflection times．Through the combination of a large plane mirror placed in a slant to the mirror of the optical lever，the number of reflections is accurately controlled to 2 levels，and the optical path is increased while an angle change is increased．Finally，the magnification is increased to 4 times of the traditional lever method．Theoretical analysis and experimental results show that the oblique double mirror method is used to measure the Young’s modulus of metal wire． The experimental results are in good agreement with the theoretical analysis，which verifies the effectiveness of the method and theory．In addition，the amplification factor is as high as 84．36 times in the limited space not more than 80 cm．

Key words: optical lever young’s modulus magnification stagger angle double mirror reflection

出版日期: 2023-02-25 发布日期: 2023-02-25 整期出版日期: 2023-02-25

ZTFLH:

O 435

引用本文:

肖林轩, 杨阳, 王晓威, 闫涵, 吴峰, 李晓兰 . 斜双镜光杠杆法测量金属丝杨氏模量 [J]. 大学物理实验, 2023, 36(1): 54-58.
XIAO Linxuan, YANG Yang, WANG Xiaowei, YAN Han, WU Feng, LI Xiaolan . The Optical Lever Based on Two Diagonal Mirror Used for Young’s Modulus Measurement . Physical Experiment of College, 2023, 36(1): 54-58.

链接本文:

http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2023.01.011 或 http://dawushiyan.jlict.edu.cn/CN/Y2023/V36/I1/54

[1]	李鹏宇, 胡翠莹, 高洪悦, 姚金林, 张少梅, 张进娟, 刘维慧, 苗永平. 基于角度传感技术的杨氏模量实验仪研制 [J]. 大学物理实验, 2022, 35(2): 55-69.
[2]	张胜海, 杨晓娜. 基于光功率计监视的杨氏模量测量及不确定度分析 [J]. 大学物理实验, 2022, 35(2): 102-105.
[3]	马堃. 基于拉伸法测量金属丝杨氏模量的实验研究 [J]. 大学物理实验, 2020, 33(1): 17-20.
[4]	于莉莉, 黄雷, 李茂义, 马浩骢, 喻孜. 多次反射光杠杆法测金属线胀系数的公式修正 [J]. 大学物理实验, 2019, 32(6): 6-8.

[1]	. [J]. Physical Experiment of College, 2020, 33(1): 0 .
[2]	. [J]. Physical Experiment of College, 2020, 33(1): 0 .
[3]	WU Ming, ZENG Hong, ZHANG Wenpeng, ZHANG Yuanwei, DAI Zhenbing. Theoretical and Experimental Research of A zimuthal-Radial Pendulum [J]. Physical Experiment of College, 2020, 33(1): 1 -6 .
[4]	LIU Weiwei, SUN Qing, LIU Chenglin. Research on Selection of Critical Magnetization Current for Measuring Charge-Mass Ratio of Electron by Magnetron Controlling [J]. Physical Experiment of College, 2020, 33(1): 7 -9 .
[5]	DENG Li, LIU Yang, ZHANG Hangzhong, ZHOU Kewei, ZHAO guoru, WEI luanyi. MATLAB simulation of Fourier transform of Gaussian beam and the spatial filtering effects basing on 4F optical imaging system [J]. Physical Experiment of College, 2020, 33(1): 10 -16 .
[6]	MA Kun. Experiment Study on the Measuring Young' s Modulus by Stretching [J]. Physical Experiment of College, 2020, 33(1): 17 -20 .
[7]	FEI Xianxiang, CHEN Chunlei, WANG Wenhua, SHI Wenqing, HUANG Cunyou. Design of Lens Group Focal Length Measurement System Based on Object-Image Parallax Comparison [J]. Physical Experiment of College, 2020, 33(1): 21 -24 .
[8]	LI Chunjiang, LI Luyu, YANG Jinglei, LI Tingrong, XIANG Wenli. A New Method for Simple and Rapid Measurement of Refractive Index [J]. Physical Experiment of College, 2020, 33(1): 25 -28 .
[9]	WANG Cuiping, YAO Mengyu, YE Liu, LI Aixia, ZHANG Ziyun, DAI Peng. Progress and Applications of Electron Spin Resonance in Biology [J]. Physical Experiment of College, 2020, 33(1): 29 -33 .
[10]	CHEN Yingmo, SHEN Siyi, WANG Jie. Study on the Characteristics of Silicon Photocells [J]. Physical Experiment of College, 2020, 33(1): 34 -36 .