Superplastic forming process applied to aero-industrial strakelet: wrinkling, thickness, and microstructure analysis

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题名:	Superplastic forming process applied to aero-industrial strakelet: wrinkling, thickness, and microstructure analysis
作者:	傅尹坤;Tang, Jung-Sung;Fuh, Yiin-Kuen;Lee, Shyong
贡献者:	工學院機械工程學系
关键词:	Aluminum;CAE) and Design;Computer-Aided Engineering (CAD;Engineering;Finite element method;Heat treating;Industrial and Production Engineering;Mechanical Engineering;Media Management;Metal sheets;Original Article;Superplastic forming;Superplasticity;Thickness measurement;Thinning;Three dimensional analysis;Wrinkling
日期:	2015-01-01
上传时间:	2026-04-23 15:28:52 (UTC+8)
出版者:	Springer London;London: Springer London
摘要:	摘要： Superplastic forming (SPF) of an aluminum sheet trough with a large depth to width ratio is challenging because of the difficulties in obtaining a satisfactory, uniform thickness distribution. To address this problem, two different SPF techniques, namely, two-stage gas forming (TSGF) and hot-bend assisted gas forming (HBAGF), were used to fabricate airplane strakelets. Undesirable wrinkling occurred in both cases, but the sites and causes of wrinkle formation were different. Thickness measurements around the edge of the circumference were relatively uniform, with a minimum thickness of ∼1.32 mm (∼34.0 % thinning percentage) for the HBAGF sample. This thickness significantly exceeded that of a sample processed by a previously developed TSGF method (∼0.8 mm, ∼60 % thinning percentage). Three-dimensional finite element analysis was implemented to accurately predict the shape and occurrence of wrinkling. Furthermore, experimental forming trials with the HBAGF die led to significant improvement of the thickness profile of superplastically formed parts. 其他題名： Int J Adv Manuf Technol 出版者： London: Springer London 出版日期： 2015-03-01 出處： International journal of advanced manufacturing technology, 2015-03, Vol.77 (5-8), p.1513-1523 資源來源： EBSCOhost Academic Search Premier 版權： Springer-Verlag London 2014 版權： The International Journal of Advanced Manufacturing Technology is a copyright of Springer, (2014). All Rights Reserved. 識別號： ISSN: 0268-3768 識別號： EISSN: 1433-3015 識別號： DOI: 10.1007/s00170-014-6527-7
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