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应用科学学报 ›› 1987, Vol. 5 ›› Issue (3): 197-202.

• 论文 • 上一篇    下一篇

关于测定材料条纹值的某些新途径

欧阳鬯, 叶宁   

  1. 复旦大学
  • 收稿日期:1986-05-20 修回日期:1987-01-15 出版日期:1987-09-30 发布日期:1987-09-30
  • 基金资助:
    中国科学院科学基金资助的课题

SOME NEW APPROACHES TO DETERMINING MATERIAL FRINGE VALUE

OUYANG CHANG, YE NING   

  1. Fudan University
  • Received:1986-05-20 Revised:1987-01-15 Online:1987-09-30 Published:1987-09-30

PDF

90

被引次数

1

摘要： 本文通过对确定等差线非整数条纹级数的光度计补偿法研究,最先探讨了用图象处理机快速测定材料条纹值的两种途径(比暗法与光强法),推导了光强法求条纹级数的公式,并建立了"快速测定材料条纹值系统(即YES系统)".此外,还研究了另一途径——灰度法.最后,以轴向拉伸板,纯弯曲梁和对径受压圆盘为试件,测定了它们的材料条纹值.用此系统,一次测试只需三、四分钟,且精度高,这为实时光弹性力学奠定了基础.

Abstract: In this paper, after a research for Photometric Compensation Methods on the-determination of non-integer isoohoromatio fringe order, two methods:Darkest Method and Intensity Method, to determine material fringe value are developed with a Digital Picture Computer. Here, authors deduced the fringe order formulas in Intensity Method, and established a Material Fringe Value Fast Determination System (YES system). Besides, another method, Gray Method, was also presented. With an axial tension plate, a pure bending beam and a diametral loaded disk as models, the determination of each material fringe method was performed. It takes only 3 to 4 minutes to make one determination with this system and the precision is high. This lays a foundation for Eeal Time Photoelasticity.