21403 アルミニウム合金ダイカスト内部の引け巣クラスターの実態検出(一般講演アルミニウム材)

概要

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One disadvantage of aluminum alloy die castings is the presence of casting defects. In this study, we deal with shrinkage pores as the defects. Shrinkage pores become the initiation point of fatigue crack due to those complicated shape and reduce the fatigue strength. However, shrinkage pores cannot be observed by X-ray CT. So, we try to polish the specimen surface with the cluster of shrinkage pores every polishing depth of 10 μm and take the images of polishing surfaces by microscope. It is shown that the three-dimensional image of shrinkage pores cluster can be taken precisely by superimposing the image of polishing surfaces.
一般社団法人日本機械学会の論文
2010-03-09