Fatigue-Fractured Surfaces of Epoxy Adhesives and Fractals under Mode I Cyclic Loading
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概要
- 論文の詳細を見る
The effects of rubber modification and adhesive thickness on the fatigue-fractured surfaces of epoxy adhesives under mode I cyclic loading were examined using fractals. When the energy release rate range, ΔG_I, is higher than 100 J/m^2, the fractal dimension of fractured surfaces becomes high due to rubber modification. The fractal dimension decreases with increasing fatigue crack growth rate, da/dN. The following equation shows the relationship between parameter S(=da/dN・ΔG_I)and fractal dimension D for unmodified and rubber-modified adhesives. log S=log(da/dN・ΔG_I)=α_4・D+β_4 Here, α_4 and β_4 are experimental constants. Regardless of whether the adhesives contain rubber particles or not, the fractal dimension as well as the da/dN-ΔG_I relation is little affected by adhesive thickness.
- 一般社団法人日本機械学会の論文
- 1998-07-15
著者
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Fujii Toru
Department Of Mechanical Engineering And Systems Doshisha University
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NAITO Kimiyoshi
School of Mechanical Engineering, Doshisha University
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Naito Kimiyoshi
School Of Mechanical Engineering Doshisha University
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