2033 ボックスカウンティング法による材料破面のフラクタル次元の評価(J01-2 材料や構造の破壊/損傷/マルチスケール解析(2),J01 材料や構造の破壊/損傷/マルチスケール解析)

概要

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The box-counting method has been applied to the evaluation of fractal dimensions of the fracture surfaces by using the gray scale values of the bit map images of SEM (scanning electron microscope) photographs. As specimens, gray cast iron (FC200) was adopted and the effect of the fracture mode (brittle or ductile) on the fractal dimensions of the fracture surfaces was investigated. The fracture mode was controlled by changing the temperature at the fracture tests. It has been clarified that the fractal dimension changes considerably with the magnification of SEM in the case of brittle fracture comparing with the case of ductile fracture.
社団法人日本機械学会の論文
2006-09-15