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Cu가 함유된 구상흑연주철의 380oC에서 오스템퍼링 시Mo이 기계적 특성에 미치는 영향
김기엽 ( G Y Kim ) 한국열처리공학회 2013 熱處理工學會誌 Vol.26 No.5
In this study, we investigated effect of Mo addition on mechanical properties of Cu added ADI. Ductile cast iron specimens were austenitized at 900oC for 150 min and then austempered at 380oC for the various time periods from 15 min to 480 min. Mo added ADI had a higher volume fraction of retained austenite, and the volume fraction of retained austenite was determined by XRD analysis. As decreasing volume fraction of retained austenite, the elongation was also decreased as expected. But the UTS and yield strength were not decreased.
최재완(J.W.Choi),임선종(S.J.Lim),이정규(J.G.Lee),강용근(Y.G.Gang),박경택(K.T.Park),김기엽(G.Y.Kim) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
This paper proposes LM method for solving bin-picking problem in robot vision. It has the processing steps such as image enchancement, image thresholding, region labelling, and moment computation. To determine a target object from bined objects, the modified labelling method is used. To determine position and orientation of holdsite, the moment method is used. Finally, some experiment results are illustated and compared with the results of conventional shrinking algorithm. The proposed LM method has reduced processing time.