E-8 SUBCRITICAL CRACK GROWTH IN THERMALLY TEMPERED GLASS : EVALUATION BY INDENTATION-INDUCED MICROCRACKS(Session: Fatique/SCG)
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概要
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Thermally tempered glass is made by cooling rapidly after heating float glass to near a softening point. The compressive residual stresses generated at the surface layer by thermal expansion strengthen the material. However, the tensile residual stress layer will be also generated in the interior of the material to balance with the surface compression residual stress. The presence of these residual stress layers in thermally tempered glass will play an important role from the viewpoint of crack growth in fatigue. In this study, to examine the fatigue crack growth behavior of thermally tempered glass in detail, a simple and effective method suggested by Gupta^<(1)> was applied. As a result, it was found that the surface compressive residual stress in thermally tempered glass not only strengthens but also restrains the crack growth.
- 2006-11-08
著者
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Tokunaga Hitoo
Ube National College of Technology
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Ikeda Kiyohiko
University of Miyazaki
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Kaizu Koichi
University of Miyazaki
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Kinoshita Hiroyuki
University of Miyazaki
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Kaizu Koichi
Dep. Of Mechanical And System Engineering Graduate School Of Engineering Univ. Of Hyogo
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Kaizu Koichi
Dep. Of Mechanical And System Engineering Univ. Of Hyogo
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KAIZU Koichi
University of Hyogo
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