T. Latsuzbaya, P. Middendorf, D. Voelkle, C. Weber

Thermoplastic mono-material composite sandwich structures can be essential in developing sustainable aircraft cabins. Compared to conventional structural materials, sandwich structures possess excellent mechanical performance and a higher stiffness-to-weight ratio. Additionally, thermoplastic materials are recyclable and weldable, have short processing cycle times, and have great potential for automated production. The primary objective of this work is to characterize thermoplastic sandwich panels developed by three different manufacturing methods: isothermal, non-isothermal, and combined. The isothermal manufacturing process involves heating and bonding the sandwich components in a single step. In contrast, the non-isothermal approach separates the heating and bonding stages. The third manufacturing process combines both isothermal and non-isothermal approaches. The mechanical performance of the sandwich structures concerning the manufacturing process parameters can be demonstrated using an experimental method. The drum peel tests are performed to determine the skin-core interfacial strength, and the flatwise compression and four-point bending test campaign is used to investigate the compression and bending behavior of sandwich panels. The failure mode can be altered from skin-core debonding to skin or core fracture by varying the process parameters such as temperature, pressure, and pressing time. The peel strength results for the three different manufacturing approaches differ drastically, while the bending strength results for the cases are similar and stay in the same range.

Deutscher Luft- und Raumfahrtkongress 2024, Hamburg

Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2024

Conference Paper

englisch

21,0 x 29,7 cm, 7 Seiten

urn:nbn:de:101:1-2412131004403.298144156904

10.25967/630031

thermoplastic sandwich panel, mechanical performance

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Latsuzbaya, T.; Middendorf, P.; et al. (2024): Influence of Process Parameters on Mechanical Performance of Thermoplastic Mono-Polymer Sandwich Structures. Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.. (Text). https://doi.org/10.25967/630031. urn:nbn:de:101:1-2412131004403.298144156904.

13.12.2024