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Arblaster, Thomas (author)Emerging in the domain of composite manufacturing, thermoplastic polymers can enable the reduction of process times, costs, and waste. In this study, lifecycle assessment (LCA) is used to evaluate a design for a carbon fibre-reinforced thermoplastic (CFRTP) wing rib, made from carbon fibre and polyetherketoneketone (CF/PEKK). The CF/PEKK rib is...master thesis 2023
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Lonis, Sam (author)Thermoplastic composite materials are increasingly used in aircraft construction due to their high-mechanical properties, toughness, rapid processing rates and reprocessing possibilities at their end-of-life. In the production thermoplastic composite parts, 10-40% of the material remains unused, so-called production waste. Despite being a high...master thesis 2023
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HARIHARAN, RAJNEESH (author)Delamination is a significant failure mode that has been the subject of extensive research in laminated structures. The interface in assembly structures often represents the susceptibly weak link and necessitates careful consideration to guarantee structural stability. It is of utmost significance to understand the behaviour of the delamination...master thesis 2023
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van Winden, Dave (author)Laser-assisted fiber placement (LAFP) is an automated manufacturing technique with promising potential to produce larger aerospace structural components using thermoplastic composites. However, during the rapid heating phase, deconsolidation of composite tapes can occur, resulting in negative effects on bond forming ability. This study aimed to...master thesis 2023
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Tijs, B.H.A.H. (author)Thermoplastic composites enable new manufacturing techniques such as conduction welding to make the aviation industry more sustainable, while at the same time, provide great benefits to cost-efficient high-volume production. One of the benefits of welding is that it reduces the amount of mechanical fasteners required. Fastener-free joining also...doctoral thesis 2023
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Iványi, Charlotte (author)Laser-assisted fiber placement (LAFP) is a promising manufacturing process for thermoplastic composites (TPCs), which enables out-of-autoclave production and eliminates post-consolidation steps. In LAFP, thermoplastic carbon fiber tapes are heated with a laser heat source and placed into the desired layup with the help of a robot, while being...master thesis 2023
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van Dooren, K.S. (author), Tijs, B.H.A.H. (author), Waleson, J. E.A. (author), Bisagni, C. (author)Two aeronautical thermoplastic composite stiffened panels are analysed and tested to investigate the buckling behaviour, the skin-stringer separation and the final failure mode. The panels are made of fast crystallising polyetherketoneketone carbon composite, have three stringers with an angled cap on one side, and are joined to the skin by a...journal article 2023
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Smeets, E.T.B. (author), Rans, C.D. (author), Castro, Saullo G.P. (author), Villegas, I.F. (author)In thermoplastic composite joints with a circular ultrasonic spot weld, the damage growth is located at the interface between the joined components. This means that any damage in these joints is invisible from the outside. This experimental study compares three different in-situ methods to measure the damage growth indirectly. The motivation...journal article 2023
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De Paula Santos, L.F. (author), Monticeli, F.M. (author), Ribeiro, Bruno (author), Costa, Michelle Leali (author), Alderliesten, R.C. (author), Botelho, Edson Cocchieri (author)Carbon fiber reinforced polymer (CFRP) composites are widely used to produce structural components. However, their low interlaminar strength makes them susceptible to delamination, limiting structural applications. Aiming to solve this problem, this work proposes adding carbon nanotubes buckypaper (BP) into CFR thermoplastic composites as an...journal article 2023
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Geschiere, Joran (author)The accuracy of hot press forming process simulations with unidirectional fiber reinforced thermoplastics is not at the desired level. Fundamental knowledge about the interactions between adjacent plies is needed to enhance predictive quality. Several mechanisms can be distinguished during hot press forming of composites. This thesis focuses on...master thesis 2022
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Bhanu Prakash, Bhanu Prakash (author)Research and development of thermoplastic composites has been ever increasing owing to the advantages brought by it over conventional materials such as metals and thermoset composites. Higher processing rates, automation, the possibility to recycle, weldability and better mechanical and chemical properties are some of them. Fusion bonding of...master thesis 2022
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Guevara Sotelo, Natalia Sofia (author)Fiber-reinforced polymer composites have gained relevance in the aerospace industry due to their great potential for weight reduction. This, thanks to their outstanding specific properties and ability to be tailored to different applications. Developing efficient composite joining techniques is a challenge that requires great attention as it is...master thesis 2022
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Rosado Bailon, Gisela (author)The safety of a commercial aircraft is a factor to consider from the early stages of its design to guarantee that this one's structure can protect the occupants inside in a low-speed crash. In an aircraft's primary structure such as a fuselage, where the occupants and cargo should be protected, the design regulations imposed by the EASA have...master thesis 2022
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Jongbloed, B.C.P. (author)One of the most promising welding techniques for thermoplastic composites is ultrasonic welding. It is mainly known as a spot welding technique. The relatively new technology continuous ultrasonic welding of thermoplastic composites makes it possible to obtain large fully welded seams with higher load carrying capabilities. However, at the start...doctoral thesis 2022
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Experimental and numerical study of bending-induced buckling of stiffened composite plate assembliesTelford, R. (author), Peeters, D.M.J. (author), Rouhi, M. (author), Weaver, P. M. (author)Despite their importance in benchmarking numerical simulations, buckling tests still feature compromises between component-level and high-fidelity large-scale tests. For example, compression-induced buckling tests cannot capture the through-thickness or span-wise stress gradients in wing skins. Consequently, the results obtained often require...journal article 2022
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van der Meer, F.P. (author), Kovacevic, D. (author)A micromechanical framework for modeling failure in unidirectional (UD) thermoplastic composites under rate-dependent off-axis loading is presented, with the aim to predict and analyze transverse matrix cracking under various load conditions. The onset of global softening in the micromodel corresponds to macroscopic matrix crack initiation. The...conference paper 2022
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Tijs, B.H.A.H. (author), Doldersum, M.H.J. (author), Turon, A. (author), Waleson, J. E.A. (author), Bisagni, C. (author)The capability of joining two thermoplastic composite parts by welding is a key technology to reduce the weight and cost of assembled parts and enables high volume manufacturing of future aeronautical structures made of thermoplastic composite materials. However, there is not much experimental understanding of the mechanisms involving welded...journal article 2022
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Akay, E. (author), Köhler, F. (author), Villegas, I.F. (author)Continuous ultrasonic welding (CUW) is one of the most efficient integration methods of thermoplastic composites. Researchers from our group have already utilized CUW method by using both frame based and robotic welding platforms to achieve sufficient amount of joint strength for aerospace applications [1-3]. On the other hand, the...conference paper 2022
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Werlen, Vincent (author), Vocke, Richard (author), Rytka, Christian (author), Schwanemann, Philip (author), Michaud, Véronique (author), Dransfeld, C.A. (author)Side-by-side hybrid textiles consist of layers of woven reinforcing fibres and thermoplastic fibres fabrics alternatively stacked on each other, as represented in Figure 1. Press moulding of side-by-side hybrid textiles is a manufacturing method where a near-net shape final part is produced in a single step, unlike pre-impregnated materials...conference paper 2022
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Urselmann, H.H. (author), Gülmez, D.E. (author), Dransfeld, C.A. (author)Discontinuous fiber composites (DFC) have properties such as notch insensitivity, short processing times, and large shaping freedom [1-3]. However, the mechanical behavior of ROT composites is less predictable compared to continuous fiber composites due to the mesoscopic heterogeneity of the material [4]. Controlling the tape alignment is a...conference paper 2022