Incremental Forming of Sandwich Materials

Abstract:

In the last decade, a completely new process has been developed using the existing knowledge in machining and in flow forming and spinning processes, so called the Incremental Sheet Forming. In the process, a spherical tool, governed by CNC incrementally forms a sheet metal to form complex and asymmetric parts using minimum tooling. Several works have been published to study the process limits, optimization of paths for the forming of deep walls and to extent the formability of some alloys using temperature as a process variable. Few studies have been also published where the incremental forming of polymers has been studied. In this work, the forming of steel-polymer-steel hybrid material or Laminate Vibration Damping Steels (LVDS) is considered. Spinnability tests are used to study the process limits and the effects of having two independent sheets in the thickness of the initial blank. The maximum forming angle, forming vertical force and maximum strains near the fracture are presented for the sandwich material in comparison to steel with three different thicknesses and same composition.

• Periodical: Key Engineering Materials (Volumes 504-506)
• Pages: 931-936
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.504-506.931
• Online since: February 2012
• Authors: Lander Galdos, Eneko Sáenz de Argandoña, Nagore Otegi, Rafael Ortubay
• Keywords: Incremental Sheet Forming (ISF), Sandwich Material, Sheet Metal

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