Computerized image processing for whole-field determination of isoclinics and isochromatics |
| |
| Authors: | A V S S S R Sarma S A Pillai G Subramanian T K Varadan |
| |
| Institution: | (1) Structures Laboratory, 695 022 Trivandrum, India;(2) Vikram Sarabhai Space Center, 695 022 Trivandrum, India;(3) Department of Aerospace Engineering, Indian Institute of Technology, 600 036 Madras, India |
| |
| Abstract: | A new computerized method for the whole-field determination of isoclinic and isochromatic parameters in a stressed photoelastic
model is presented. The intensity data obtained from the fringe pattern at three analyzer positions (0, 45, and 90 degrees)
in a plane polariscope, are used for the computations. The relationships between the intensity values and the photoelastic
parameters are derived using Stokes representation of polarized light. The experiments were carried out using a computer-based
image-processing system. The accuracy achieved is assessed by comparing the theoretical and measured values. Accuracies of
within ±3 degrees for isoclinics and ±0.05 fringe for isochromatics are shown to be possible. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
