RESEARCH ON THE FORMING ANGLE OF A1050-H14 ALUMINUM MATERIAL PROCESSED BY USING SINGLE POINT INCREMENTAL FORMING TECHNOLOGY (SPIF) - Nguyen, Nam; Phan, Tuan; Vo, Cuong; Le, Dien; Nguyen, Binh; Le, Hieu (VNUHCM Journal of Science and Technology Development, 2009)