Tensile Fracture Behavior of Polymethyl Methacrylate (PMMA) under Impact Loading Conditions
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概要
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The fracture behavior of a brittle polymer, polymethyl methacrylate (PMMA) resin, under impact tensile loading was studied using single-edge-cracked specimens. The dynamic load and displacement were measured with a Piezo sensor and a high-speed extensometer, respectively. The load and displacement diagram, i.e., the external work Uex applied to the specimen was used to determine the elastic energy Ee and non-elastic energy En due to viscoelastic and plastic deformation, and the fracture energy Ef for creating new fracture surface As. The energy-release rate was then estimated using Gf=Ef/As. The values of Ee, En, Ef and Gf were correlated with the fracture loads, and compared with the ones earlier determined for the static loading conditions.
著者
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Todo Mitsugu
Research Institute For Applied Mechanics Kyushu University
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Arakawa Kazuo
Research Institute For Applied Mechanics Kyushu University
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Mada Toshio
Research Institute For Applied Mechanics Kyushu University
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KATO Masaru
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
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