The effects of mismatch parameters on isochromatic fringe patterns were studied using the technique of photoelasticity. First, the mathematical equations of isochromatic fringes were derived for singular stress field near a bi-material notch. | Nội dung Text Photoelastic study of bi-material notches Effect of mismatch parameters Engineering Solid Mechanics 1 2013 21-26 Contents lists available at GrowingScience Engineering Solid Mechanics homepage esm Photoelastic study of bi-material notches Effect of mismatch parameters M. M. Mirsayar a and . Samaei b a School of Mechanical Engineering Iran University of Science amp Technology Narmak Tehran Iran b Young Researchers amp Elite Club Chalous Branch Islamic Azad University Chalous Iran ARTICLE INFO ABSTRACT Article history The effects of mismatch parameters on isochromatic fringe patterns were studied using the Received January 15 2013 technique of photoelasticity. First the mathematical equations of isochromatic fringes were Received in Revised form derived for singular stress field near a bi-material notch. These equations were used to study the March 26 2013 effects of mismatch parameters on the shape of isochromatic fringes theoretically. Analytical Accepted 18 June 2013 Available online results indicated that the mismatch parameters have a significant effect on the shape of the 23 June 2013 isochromatic fringe patterns around the bi-material notch tip. In order to assess the accuracy of Keywords the analytical results a photoelastic test program was conducted on the V-notched bi-material Photoelasticity Brazilian disc specimens. A very good agreement was shown to exist between the experimental Bi-material Notch results and the analytical reconstructions. Mismatch Parameters 2012 Growing Science Ltd. All rights reserved. 1. Introduction Bi-material joints are extensively employed in many engineering applications such as ceramic coatings welded structures and adhesively bonded joints. Sharp notches and reentrant corners are also very often present at the interface joints for which the generated stress concentration is not only due to a material discontinuity but also from a geometrical one at the interface of the bi-material .
