2219 X線CTデータを用いた鋳造部品の鋳巣体積算出法(OS4-3 3次元設計シミュレーション,OS4 デジタルエンジニアリング)

抄録

Calculating volume of defects in casting objects is important for high quality manufacturing. However, conventional methods cannot detect tiny defects, because not only their CT value does not fall down to the value of background but also they appear like one set in CT images. As a result, we do not take into account such tiny defects and their calculation accuracy is comparatively low. In this paper, we propose a quantitative method to calculate casting defects' volume. We define two types of defect by their size and apply different calculation models to each defect and also propose a method to separate each defect from the set of defects. As a result, we can handle all defects which are appeared in CT images. This paper also demonstrates quantitative estimation of defects' volume using measured CT data.