Wednesday, October 21, 2009

Metal Hybrid Parts Tech Paper

Technical Paper - A review on polymer metal hybrid (PMH) technologies as viable alternatives for use in light-weight automotive body-in-white bolt-on as well as load-bearing (structural) components has been conducted. Within the PMH technologies, sheet-metal stamped/formed and thermoplastic injection molding subcomponents are integrated into a singular component/module. Due to synergetic effects, the performance of the PMH component typically exceeds that attainable by an alternative single-material technologies. In the present work, a total life cycle (TLC) approach to the selection of metallic and thermoplastic materials (as well as the selection of structural adhesives, where appropriate) is considered. The TLC material selection approach considers the consequences and ramifications of material selection at each major stage of the vehicle manufacturing process chain (press shop, injection molding shop, body shop, paint shop, and assembly), as well as relation to the vehicle performance, durability and the end-of-the-life-of-the-vehicle considerations. The approach is next applied to the case of injection over-molding technology to identify the optimal grade of short glass-fiber reinforced nylon when used in a prototypical PMH load-bearing automotive body-in-white component.

Source : Grujicic, M.; Sellappan, V.; He, T.; Seyr, Norbert; Obieglo, Andreas; Erdmann, Marc; Holzleitner, Jochen. International Center for Automotive Research CU-ICAR, Department of Mechanical Engineering, Clemson University, Clemson, SC, USA. Journal of Materials Engineering and Performance (2009), 18(2), 111-128. Publisher: Springer