摘要
根据夫琅禾费衍射理论和巴比涅互补原理,推导出细丝直径的表达式,设计了用激光衍射法测细丝直径的实验,由测量的数据,计算出了三种粗细不同细丝的直径,通过与其他传统方法比较,对于直径越小的细丝,此方法具有测量精度高、非接触、无损伤的优点.
According to the theory of Fraunhofer diffraction and Babinet principle,the expression of filament diameter is derived and the experiment which can measure the fine-wire diameters with laser diffraction is designed.Based on measured data,the fine-wire diameters with three different thickness are calculated.The method,which was compared with other traditional methods,has the advantages of high precision,non-contact and non-harm for the fine-wires whose diameters were smaller.
出处
《河南科学》
2012年第5期568-570,共3页
Henan Science
基金
陕西省教育厅项目(11JY0519)
渭南师范学院科研培育项目(11YKP014)
关键词
夫琅禾费衍射
单缝衍射
激光衍射
巴俾涅原理
Fraunhofer diffraction
single slit diffraction
laser diffraction
Babinet principle
