Table of Contents
ISRN Mechanical Engineering
Volume 2011, Article ID 657819, 6 pages
Research Article

The Investigation of Crack's Parameters on the V-Notch Using Photoelasticity Method

1Fatigue and Fracture Research Laboratory, School of Mechanical Engineering, Iran University of Science & Technology, 16846-13114 Tehran, Iran
2Wroclaw University of Technology, 50-370 Wroclaw, Poland

Received 13 January 2011; Accepted 8 March 2011

Academic Editor: X. Yang

Copyright © 2011 M. Saravani and M. Azizi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


V-notches are the most possible case for initiation of cracks in engineering structure. Cracks on the notch tip can be characterized by opening angle, tip radius, and depth of the V-notch. In this study, the effects of V-notch's opening angle on stress intensity factor and on 𝑇 -stress of the crack have been investigated in detail. Our calculation has been performed in a number of opening angles and various crack lengths in mode I loading using photoelasticity method. We show that as opening angle grows at constant crack's length, SIF and 𝑇 -stress decrease. Furthermore, as the crack's length increases, the V-notch effect diminishes and the crack behavior can be considered as a single-edge crack specimen. Finally, the obtained results were found to be in good agreement with outcome of numerical finite element analysis.