Evolution of meridian strains in stamp forming of steel-based fibre metal laminate

Nam, J, Cantwell, W, Das, R, Lowe, A and Kalyanasundaram, S 2014, 'Evolution of meridian strains in stamp forming of steel-based fibre metal laminate', in Raj Das, Sabu John (ed.) Proceedings of the 8th Australasian Congress on Applied Mechanics 2014 (ACAM 8), Melbourne, Australia, 24-28 November 2014, pp. 1005-1012.


Document type: Conference Paper
Collection: Conference Papers

Title Evolution of meridian strains in stamp forming of steel-based fibre metal laminate
Author(s) Nam, J
Cantwell, W
Das, R
Lowe, A
Kalyanasundaram, S
Year 2014
Conference name The 8th Australasian Congress on Applied Mechanics 2014 (ACAM 8)
Conference location Melbourne, Australia
Conference dates 24-28 November 2014
Proceedings title Proceedings of the 8th Australasian Congress on Applied Mechanics 2014 (ACAM 8)
Editor(s) Raj Das, Sabu John
Publisher Engineers Australia
Place of publication Barton, Australia
Start page 1005
End page 1012
Total pages 8
Abstract In light of recent climate changes, tight regulations have been imposed on automotive manufacturers to reduce carbon dioxide emissions of new vehicles produced. As result, making light-weight vehicles has been many manufacturers' primary interest. To help achieve such goals, researches have been carried out on using Fibre Metal Laminate (FML) structures based on thermoplastic fibre-reinforced composites for making automotive panels. This paper presents findings on stamp forming characteristics of an FML based on steel and self-reinforced polypropylene under different blank holder forces (BHFs) at room temperature. A custom-built 30-ton stamping press with a hemispherical punch and an open die was used to perform the experiments and a 3D photogrammetric strain measurement system (ARAMIS) was used for capturing resulting surface strains real-time. FMLs were observed to fail by wrinkling at varying depths depending on the BHF, with wrinkling becoming more prominent at lower BHFs and inter-ply delamination occurring at higher BHFs. Studying evolution of meridian surface strains along and off-axis to fibre directions provided understanding of the manner in which different regions undergo varying modes of deformation throughout the forming process. Larger strains were observed at regions close to flange area of an FML sample along 45 meridians than in fibre directions.
Subjects Materials Engineering not elsewhere classified
Keyword(s) Fibre metal laminate Meridian strains Real-time strain measurement system Self-reinforced polypropylene Stamp forming
Copyright notice © 2014 Engineers Australia
ISBN 9781922107350
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