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Numerical simulation and experimental verification of FRP skin-wood and FRP skin-XPS sandwiches for civil and aircraft engineering applications

MSc Thesis

Description:
A sandwich-structured composite is a special class of composite materials that is fabricated by attaching two thin but stiff skins to a lightweight but thick core. The core material is normally low strength material, but its higher thickness provides the sandwich composite with high bending stiffness with overall low density. Different types of face sheet layers and core materials can be used and combined. The core layer thickness can be varied depending on the required thermal and mechanical performance. Advanced fibre reinforced polymer (FRP) composites are current popular skin materials for sandwich structures due to their low density but high strength and modulus. For the core materials, light weight balsa wood and extruded polystyrene (XPS) foam are two of the promising representatives in current literature. Due to their high strength- and stiffness to weight ratios, sandwich structures makes them ideally suited for usage in applications where besides a high structural performance a low weight is required such as for load-bearing lightweight exterior walls, floors or roofs as well as aircraft interiors applications. Moreover, sandwich structures have good acoustic and insulation properties which allow a high amount of flexibility in design and application. Due to their modularity and repeatability they are ideally suited for modular construction and aircraft interiors applications. This master thesis focuses on the numerical simulation of FRP skin-wood and FRP skin-XPS two types of sandwich panels subjected to different loading conditions, i.e. axial compression, bending or dynamic impact loading. The numerical simulated results will be verified with the existing experimental results.


The tasks include:

  • Literature review of the FRP-wood and FRP-XPS sandwich panels
  • Literature review of numerical simulation of FRP, wood, XPS modelling
  • Generation of finite element model to simulate the sandwiches subjected to different loading conditions
  • Verification of the numerical simulated results with the existing experimental results


Expected:
Knowledge of civil engineering and computational science; Solid knowledge of numerical modeling software such as ANYSIS, ABAQUS; English language - communication skills; Self-motivation

The final thesis report can be written in English or in German. Because the mentor mainly speaks English, it is most useful for the student, to speak at least some English.

Contact: Junior Professor Dr. Libo Yan, Email:  l.yan@tu-braunschweig.de