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Continuous, free-formable sandwich design with 3D fibre reinforced core for increased lightweight level of applications in large-scale production

Thursday (09.11.2017)
10:55 - 11:15
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Hybrid textile-based composites possess an enormous potential for energy and resource efficient large-scale production, with freedom in and high specific mechanical properties.

Previous examinations cover established processes for textiles and textile-based material in differential process chains for the manufacturing of complex shaped, elastic and cushioned sandwich components [1]. The resulting HyperPreg-structures [2] have tailored stiffness and damping properties, which enables high comfort and elasticity. OLU-Preg® organo sheets [3], polyurethane (PUR) foam cores and 3D-spacer fabrics form the components of the Multi-Material-Design (MMD).

This article describes the complex design of the HyperPreg-structures, which have continuous PUR-foam core with reinforcing endless 3D-spacer fabrics. In comparison to previous variants, the mechanical properties of the new variant remain the same while increasing the parts’ lightweight limit. The deformation can be adapted to the application. To show the benefit of the complex designed MMD, the structure is tested according to their comfort and mechanical properties. Through static and dynamic testing, the improvements of the hybrid material are verified. Analysis to coupling effects, deformation and failure behaviour of the MMD complete the scientific and technological examinations for evaluating the structure related properties of such hybrid composites.

[1] K. Schäfer, J. Stiller, F. Helbig, J. Tröltzsch, D. Nestler, L. Kroll: Material selection and process configuration for free-form, voluminous and textile-based Multi-Material-Design by the example of a bucket seat. Materials Science Forum, submitted, Bremen, 2017.

[2] Patent WO 2016177357 A1 (23.06.2016), HyperPreg. TU Chemnitz, Pressless GmbH, SKL Schwergewebekonfektion Lichtenstein GmbH. Helbig F, Schäfer K, Tröltzsch J, Kroll L. Application. Hybrider textilverstärkter Multi-Material-Verbundwerkstoff und Verfahren zu seiner Herstellung

[3] Patent DE 102012007631 A1 (15.11.2012), SKL Schwergewebekonfektion Lichtenstein GmbH. Application. Textile Mehrschicht-Verstärkungsstruktur mit integrierter thermoplastischer Matrix zur Herstellung von umformbaren Faserverbund-Halbzeugstrukturen

Kay Schäfer
Chemnitz University of Technology
Additional Authors:
  • Jonas Stiller
    Chemnitz University of Technology
  • Dr. Jürgen Tröltzsch
    Chemnitz University of Technology
  • Prof. Dr. Daisy Nestler
    Chemnitz University of Technology
  • Prof. Dr. Lothar Kroll
    Chemnitz University of Technology


Category Short file description File description File Size
Short Paper LightMAT-2017-Short-Paper-kschae This is the short paper to submission number 81 of the LightMat 2017. 317 KB Download