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http://dx.doi.org/10.5228/KSPP.2007.16.4.239

Process Design of Superplastic Forming/Diffusion Bonding by Using Step-by-step Pressurization  

Song, J.S. (충남대학교 대학원, BK21 메카트로닉스사업단)
Kang, Y.K. (국방과학연구소)
Hong, S.S. (국방과학연구소)
Kwon, Y.N. (한국기계연구원)
Lee, J.H. (한국기계연구원)
Kim, Y.H. (충남대학교, BK21 메카트로닉스사업단)
Publication Information
Transactions of Materials Processing / v.16, no.4, 2007 , pp. 239-243 More about this Journal
Abstract
Superplastic forming/diffusion bonding(SPF/DB) has been widely used in the automotive and aerospace industry since it has great advantages to produce very light and strong components. Finite element method(FEM) is used to model the SPF/DB process of 3-sheet sandwich panel to predict the pressure-time curve and to analyze the process parameters. In order to eliminate defects of the part, a new pressurization scheme is proposed. Contrary to the conventional one-step pressurization, which causes the folding at the DB joint, two-step pressurization can eliminate the folding. Effect of pressurization cycle was investigated by using FE analysis and proper pressurization cycle is proposed.
Keywords
Superplastic Forming/Diffusion Bonding(SPF/DB); Finite Element Method(FEM); Step-by-step Pressurization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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