Micro-photoelasticity and its picture processing
Abstract
Two types of experimental microphotoelastic equipment, reflective and transparent, have been designed by improving a metallurgical microscope. The sensitivity of the reflective equipment is found to be twice that of the transparent-type setup, making it possible to clearly observe photoelastic fringes in monofilaments 200-400 microns in diameter. Equipment has also been developed to continuously and automatically measure the coefficient of birefringence in monofilaments. Fringe patterns are recorded by a TV camera, and the video signal is converted to digital form and then fed to a microcomputer. Results for polymer monofilaments are presented.
- Publication:
-
IN: Photoelasticity; Proceedings of the International Symposium
- Pub Date:
- 1986
- Bibcode:
- 1986phel.proc..167S
- Keywords:
-
- Analog To Digital Converters;
- Diffraction Patterns;
- Image Processing;
- Microcomputers;
- Photoelastic Analysis;
- Transparence;
- Copolymers;
- Nylon (Trademark);
- Polyamide Resins;
- Refractivity;
- Instrumentation and Photography