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POLYURETHANE BASE SANDWICH STRUCTURES – FACE SHEET CHARACTERISTICS –

Kuppinger, Jan and Kopp, Gerhard and Dietrich, Stefan and Henning, Frank (2012) POLYURETHANE BASE SANDWICH STRUCTURES – FACE SHEET CHARACTERISTICS –. The 12th-annual SPE Automotive Composites Conference & Exhibition (ACCE), 11.-13.09.2012, Troy, Michigan, USA.

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Official URL: ttp://www.speautomotive.com/

Abstract

Sandwich components and constructions are an important part of modern lightweight design for the vehicle industry. The current paper addresses polyurethane based sandwich structures manufactured with a polyurethane fiber spraying process. For sandwich manufacturing the preform of the sandwich was externally prepared by fixing the core and the glass fiber mats together. The subsequent spraying process was carried out consecutively on the upper and lower side of the sandwich before insertion into the molding press. The influences of 300 g/m², 450 g/m², 600 g/m² and 900 g/m² glass fiber mats in the face sheet thickness were investigated. The characterization of the face sheet’s thickness was carried out using X-ray computed tomography and 3D image analysis methods for non-destructive measurements on prepared samples. Based on these results, the mechanical properties of the face sheets were determined. Finally, a simplified FEM model could be applied and provided excellent agreement with the experimental data. The transfer of these results into an industrial application will be presented.

Document Type:Conference or Workshop Item (Speech)
Title:POLYURETHANE BASE SANDWICH STRUCTURES – FACE SHEET CHARACTERISTICS –
Authors:
AuthorsInstitution or Email of Authors
Kuppinger, JanFraunhofer ICT
Kopp, GerhardDLR FK
Dietrich, StefanUniversität Karlsruhe KIt
Henning, FrankFraunhofer ICt
Date:September 2012
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:Sandwich, Polyurethan
Event Title:The 12th-annual SPE Automotive Composites Conference & Exhibition (ACCE)
Event Location:Troy, Michigan, USA
Event Type:international Conference
Event Dates:11.-13.09.2012
Organizer:SPE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Projekt Next Generation Train (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Lightweight and Hybrid Design Methods
Deposited By: Gerhard Kopp
Deposited On:12 Nov 2012 11:37
Last Modified:12 Nov 2012 11:37

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