文章摘要
激光准直法测量金属材料杨氏模量的研究
Study on Measurement of Young"s Modulus of Metal Material by Laser Collimation
投稿时间:2020-06-24  修订日期:2020-06-24
DOI:
中文关键词: #$TAB:激光准直法  杨氏模量  光杠杆  线性拟合.
英文关键词: laser collimation  Young"s modulus  optical lever  linear fitting.
基金项目:
作者单位E-mail
吴振楠 云南师范大学 物理与电子信息学院 云南 昆明 3196588062@qq.com 
许林 云南师范大学物理与电子信息学院 601124149@qq.com 
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中文摘要:
      利用激光准直性好、单色性好、体积小、亮度高、其光路便于观察的特点,用红色激光笔和坐标纸替代望远镜和标尺进行实验。减小在利用尺读式望远镜读数时因视觉疲劳、光线暗等问题带来地读数误差,引入origin软件的线性拟合功能分析实验数据,拟合线性相关系数R2达到了0.99985,置信度极高,由此标定出待测金属丝的杨氏模量的大小,使实验的精确度进一步提高。
英文摘要:
      using the characteristics of good collimation, good monochromaticity, small volume, high brightness and easy observation of its optical path, red laser pen and coordinate paper are used instead of telescope and ruler for experiment. In order to reduce the reading error caused by visual fatigue and dark light when using the ruler reading telescope, the linear fitting function of Origin software is introduced to analyze the experimental data. The fitting linear correlation coefficient R2 reaches 0.99985, with high confidence. Thus, the size of Young"s modulus of the metal wire to be measured is calibrated, and the accuracy of the experiment is further improved.
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