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The influence of temperature on the forming behavior of metal/polymer laminates in sheet metal forming

journal contribution
posted on 2007-10-01, 00:00 authored by Matthias WeissMatthias Weiss, Matthew Dingle, Bernard RolfeBernard Rolfe, Peter HodgsonPeter Hodgson
The influence of temperature on the forming behavior of an aluminum/polypropylene/aluminum (APA) sandwich sheet was studied. Shear and tensile tests were performed to determine the mechanical properties of the laminate and the component materials as a function of process temperature. The forming limit diagram (FLD) of the laminate was established for two different temperatures, and its springback behavior was examined in four-point bend and channel bend tests. Cup forming tests were performed at various test temperatures to determine the limiting drawing ratio (LDR) and the tendency for wrinkling at these temperatures. Although there was only a minor influence of temperature on the mechanical properties and the FLD values of the laminate, the bend test results reveal that springback can be reduced by forming at higher temperature. The decreasing strength of the core material with rising process temperature led to an increased tendency of the laminate to wrinkle in the heated cup drawing tests.

History

Journal

Journal of engineering materials and technology

Volume

129

Issue

4

Pagination

530 - 537

Publisher

American Society of Mechanical Engineers

Location

New York, N.Y.

ISSN

0094-4289

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2007, American Society of Mechanical Engineers