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Advances in Materials Science and Engineering
Volume 2016, Article ID 7126854, 9 pages
http://dx.doi.org/10.1155/2016/7126854
Research Article

Effect of the Reinforce Process on the Fatigue Fracture Properties of Aeronautical Polymethyl Methacrylate

1Key Laboratory of Protection and Retrofitting for Civil Building and Construction of Tianjin, Tianjin Chengjian University, Tianjin 300384, China
2School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
3Department of Mechanics, Tianjin University, Tianjin 300072, China

Received 11 March 2016; Accepted 1 August 2016

Academic Editor: Pavel Lejcek

Copyright © 2016 Wei Shang et al. 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.

Abstract

The main purpose of the present work is to investigate fatigue fracture mechanical properties of aeronautical directional polymethyl methacrylate (PMMA) which has been treated by the directional tensile technology. Firstly, the fatigue cracks growth has been tracked in directional PMMA using the stroboscopic method. Then, the digital photoelasticity with a phase-shifting technique was used to measure the uniformity of the interlaminar stretching. Based on obtained experimental results, the effect of the directional stretching on fatigue fracture properties of PMMA was analyzed. Finally, fatigue fracture properties of laminated directional PMMA were discussed and compared with those of monolayer directional PMMA. Results of this work show that the lamination technology can strengthen the interlayer of directional PMMA and enhance its fatigue fracture properties.