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박병호(Park Byung Ho),이진현(Lee Jin Hyun),양대호(Yang Dae Ho),박성우(Park Sung Woo),김동욱(Kim Dong Wook) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
Recently, automotive industry has applied high strength steels due to the demand for reduced vehicle weight and improved safety. A hot press forming process has been implemented to increase the strength of passenger car body parts and to reduce not only the weight of parts but also the number of work process. 1.5GPa hot press forming steel is widely used in mass production. In order to reduce the emission of greenhouse gases and improve fuel efficiency, new hot press forming steel has been developed. The purpose of these study is focused on investigation into microstructure and mechanical properties of two kinds of hot press forming steel.
김형목,허영무,양대호,서대교 기계기술연구소 1999 성균관대학교 논문집 기계기술편 Vol.1 No.1
This paper describes experimental investigation on the forming limit for mash-seam welded sheets. The uniaxial tensile test was conducted to evaluate the mechanical properties of weld bead. Experimental forming limit diagrams were investigated for the different thicknesses and properties of welded sheets.