کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
798333 903238 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fracture behavior of thin foils
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Fracture behavior of thin foils
چکیده انگلیسی

The downscaling of manufacturing processes leads to a rise in new challenges in process design. Amongst these challenges is a decrease in the limiting drawing ratio observed in micro deep drawing of metal foils. Furthermore, fracture occurs at punch force levels well below those predicted by common equations. In this paper it is proposed that these phenomena can be accounted for by non-uniformities in the flow behavior of the material due the large difference between grain sizes. The localized strains before fracture – as recorded by digital image correlation – of stretch formed aluminum foils are presented and the strain evolution is examined. Evidence to verify the hypothesis is gathered by implementing the observed flow non-uniformities into a finite element simulation and comparing the computed results to the experimental ones.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 212, Issue 3, March 2012, Pages 685–688
نویسندگان
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