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Advances in Materials Science and Engineering
Volume 2013, Article ID 412601, 7 pages
Research Article

Fracture Energy Estimation of DCB Specimens Made of Glass/Epoxy: An Experimental Study

1Faculty of Mechanical Engineering, Sardar Raja College of Engineering, Alangulam, Tirunelveli 627808, India
2Faculty of Mechanical Engineering, Government College of Engineering, Tirunelveli 627007, India

Received 22 May 2013; Accepted 20 June 2013

Academic Editor: Jacques Huot

Copyright © 2013 V. Alfred Franklin and T. Christopher. 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.


This paper examines critical load and corresponding displacement of double cantilever beam (DCB) composite specimens made of glass/epoxy of three different layups. Experiments were conducted on these laminates, and the fracture energy, , was evaluated considering the root rotation at the crack tip. The present model requires the applied load-displacement history and crack extension to estimate fracture energy. Reduction schemes based on cubic and power law are also proposed to determine Young’s modulus and energy release rate and found good agreement with the published and test results.