大学物理 ›› 2006, Vol. 25 ›› Issue (1): 47-47.

• 著者文摘 • 上一篇    下一篇

利用CCD光电测量系统测量杨氏弹性模量

李泽涛[1] 汪涛[2] 陶纯匡[2]   

  1. [1]涪陵师范学院物理系,四川涪陵408003 [2]重庆大学数理学院,重庆400044
  • 出版日期:2006-01-25 发布日期:2006-01-20

Measuring Young's modulus of materials using CCD

  • Online:2006-01-25 Published:2006-01-20

摘要: 提出一种测量微小伸长量的光电测量方法,即利用CCD光电测量系统将单缝衍射的光强分布转换为电信号。经过计算机处理后输出光强分布曲线,从相邻波谷读出衍射条纹间隔,通过软件的简单操作直接输出测量结果.实现了数据采集及运算结果的实时化、半自动化,并克服了传统方法的测量困难和数据处理的复杂计算.利用这一方法测定了钢丝的杨氏弹性模量,与标称值符合得较好。

关键词: 单缝衍射, 杨氏弹性模量, CCD

Abstract: A new method of measuring small extention is put forward. The light intensity of single slit diffraction is converted to electric signal by CCD photo-electric measuring system and outputs curve of light intensity distribution after computer processing. Read the interval of diffraction marking from adjacent wave through and output results through simple operation of software. It implements date acquisition and operation results real-timely and semiautomaticly. It overcomes the difficulty of conventional measurement method and complex calculation of date-processing. The Young' s modulus of elasticity is measured by this method and the results agree with the nominal value very well.

Key words: single slit diffraction, Young' s modulus, CCD

中图分类号: 

  • O4-34