Affiliation:
1. Suranaree University of Technology
Abstract
The aim of this study is to develop a new test method for determining dynamic fracture toughness of brittle material using the izod impact tester. Poly (methyl methacrylate) (PMMA) is used in this study. Test setup and load calibration methods are proposed. The proposed method can be successfully used to determine near-mode I fracture toughness under dynamic load. The effects of notch tip preparation and specimen thickness are also studied and discussed. Stress intensity factor at maximum load (Kmax) is determined based on a numerical simulation. It is found that the notch preparation method has a minimal effect on total fracture energy, except in the case of saw notch. Moreover, fracture toughness increases with increasing of specimen thickness.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
1 articles.
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