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김진평(Jinpyeong Kim),김동옥(Dongok Kim),한창수(Changsoo Hahn),유용문(Yongmun Ryu),한범석(Beomsuck Han) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
Tube Hydroforming has several advantages compared to the conventional press forming process. It can reduce the manufacturing costs and produce complicated shape without welding process with superior surface quality. Since aluminum alloy which is an excellent candidate for the light automotive application is difficult to be formed, tube hydroforming process can be applied to achieve desirable shape of parts. However, the tube forming process can leave residual stresses on the part, it is important to characterize the stresses in terms of their reliability and dimensional precision. Therefore, in this study, residual stresses of tube hydroformed aluminum alloy has been measured by X-ray diffraction system and the results will be compared to those of theoretical analysis.