Print Email Facebook Twitter Forming of sandwich panels on a reconfigurable mould Title Forming of sandwich panels on a reconfigurable mould: Exploratory research on quality improvement Author van der Sandt, Sebastiaan (TU Delft Aerospace Engineering) Contributor Bergsma, O.K. (mentor) Geuskens, F.J.J.M.M. (mentor) Degree granting institution Delft University of Technology Programme Aerospace Engineering Date 2018-07-10 Abstract The subject of this thesis is the forming of sandwich panels on a reconfigurable mould. The field of research is composite sheet forming. This novel manufacturing process at Curve Works has problems with panel quality, especially out-of-plane wrinkles. Exploratory research on quality improvement is performed by analysing the underlying mechanisms of single curved resin infused sandwich panels where the tooling surface is reconfigured to a concave shape. This will be done under the influence of diaphragm reinforcement, infusion pressure, and forming speed. It has become clear that a reinforced diaphragm reduces out-of-plane wrinkle displacement at the cost of residual stress. The effect of forming speed and infusion pressure on out-of-plane wrinkles is considered to be insignificantly small under the testing conditions as described in this work. For future research it is suggested to look in to reducing frictional forces and the application of tensile stresses to improve formability and panel quality. Subject Adaptive Mould FormingReconfigurable Mould FormingDouble curved sandwich panelSingle curved sandwich panelReinforced diaphragmWrinkle reductionInter-ply slipQuality improvementGeometrical model for slip To reference this document use: http://resolver.tudelft.nl/uuid:24ae3104-71c8-4da7-9e0e-2fccf69cc840 Embargo date 2023-07-10 Part of collection Student theses Document type master thesis Rights © 2018 Sebastiaan van der Sandt Files PDF Final_Master_Thesis_Repor ... _Sandt.pdf 9.53 MB Close viewer /islandora/object/uuid:24ae3104-71c8-4da7-9e0e-2fccf69cc840/datastream/OBJ/view