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Maggioli, Filippo (author)
Finite Element Methods (FEMs) are widely employed for damage simulation in composites, with the Cohesive Zone Model (CZM) being particularly favored for its robustness and scalability. Despite the CZM's mesh-dependent nature, the Discontinuous Galerkin Cohesive Zone Model (DG/CZM) formulation allows for relatively arbitrary crack propagation...
master thesis 2024
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Czél, László (author)
The thesis aimed to characterize the effects of manufacturing-induced defects, particularly gaps in variable stiffness laminates. The primary focus centered on designing a specimen capable of accurately characterizing gap effects. A refined, element-level specimen design featuring a controlled gauge zone was developed, based on pre-defined...
master thesis 2024
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Malladi, Avyadhish (author)
This thesis project focuses on the evaluation of the Extended Finite Element Model (XFEM) for modelling skin-stringer separation in thermoplastic composite stiffened panels. The study uses test results from a reference study in the literature on a PEKK-FC carbon composite panel with three stringers joined to the skin using a short-fibre...
master thesis 2024
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Lentner, Mateusz (author)
Hydrogen is one of aviation's most promising fuel alternatives in the coming years. However, to store it, a large and light vessel is needed. <br/><br/>The solution to this problem can be the carbon fibre fuel tank. Composite structures provide significant weight savings, which is crucial in this application. However, despite its superior...
master thesis 2024
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Giobbio, Martino (author)
Aerospace manufacturers increasingly rely on composite materials for the most advanced aircraft, due to their superior performance and tailorability. As the adoption of such structures grows, so does the occurrence of various kind of damages throughout their service life. Therefore, there is the necessity to develop robust, reliable and...
master thesis 2024
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Ciobotia, Ioana (author)
The present study, which was carried out in collaboration with GKN Fokker, focuses on incorporating bird strike crashworthiness requirements within a multidisciplinary optimization (MDO) framework. During the preceding three-month internship in the same company, a pivotal contribution to this project was the development of an Abaqus interface...
master thesis 2024
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Manikandan, Rakshith (author)
Fibre-reinforced laminated composites are constructed layer-by-layer, allowing their material properties to be easily tailored relative to their isotropic counterparts (metallic alloys). Moreover, a composite structure with variable stiffness (VS) can be made by spatially tailoring stiffness across a laminate. This permits better load...
master thesis 2023
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Rønning, Daniel (author)
Due to their innately robust thermal and mechanical qualities, ultra-high temperature ceramics (UHTCs) such as zirconium diboride (ZrB2) have been investigated as viable materials to be used in reusable thermal protection systems (TPS). TPSs are vital to a spacecraft’s heat balance in atmospheric reentry and in space. Here, the thermal and...
master thesis 2023
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van Maarschalkerweerd, Timo (author)
The Nacra 17 is a foiling catamaran selected to compete in the 2024 Olympic Games. The Nacra 17 is a one-design class, which requires all equipment to be identical. The Dutch Olympic team found through testing the bending stiffness that there is a slight difference in how each of their hydrofoils performed. The question was asked: What are the...
master thesis 2023
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Poliakov, Mykyta (author)
Fibre Metal Laminates (FMLs) have been widely utilised in aircraft structures for their specific strength, durability and damage tolerance. Most aircraft structures, due to their size, require joining, and FMLs allow for a special type of joint called the splice, a unique but a lesser known joint.<br/><br/>The bulk of research into the splice...
master thesis 2023
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Bangera, Sankalp (author)
Composite structures are rapidly transforming the aerospace industry, driven by continuous advancements in manufacturing methods capable of producing optimized structures with variable stiffness that enables the creation of increasingly complex and efficient structures. This project focuses on the development of a global optimization method that...
master thesis 2023
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Kulkarni, Akshay (author)
master thesis 2023
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van Haaren, Yestin (author)
C/C-SiC is a type of ceramic matrix composite, which consists of a silicon carbide matrix phase, combined with reinforcing carbon fibres. This material has high specific strength and stiffness, good damage tolerance, as well as excellent thermal properties. It is commonly applied in environments where these properties are utilized, such as...
master thesis 2023
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Waaijer, Joost (author)
The goal of this thesis is to build an artificial neural network(ANN) surrogate model, that predicts the crashworthiness performance of a structure. The structure used in this research is a thermoplastic fibre-reinforced composite aircraft subfloor section which is part of the SmarT multifUNctioNal and INteGrated thermoplastic fuselage (STUNNING...
master thesis 2022
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Amin, Shashank (author)
Kirigami- the Japanese art of paper cutting – is used extensively as a design philosophy for stretchable and morphable structures. An array of cuts on a thin planar sheet creates a structure that can morph into a 3D pattern on applying an in-plane uniaxial load. This type of structure is called a kirigami metasurface. A subset of this type of...
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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Pereira, Andres (author)
A novel twist morphing concept is explored, that exploits the buckling instabilities of slender spar webs integrated into a wing structure to control the twisting response to external loads. The main novelty of the concept is in controlling the effective shear stiffness of the post-buckled slender spar webs through external variable constraints...
master thesis 2022
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Solbes Ferri, Irene (author)
The objective of this master project is to improve the current SHM techniques for global damage identification of beam-like composite structures. The studied damage diagnosis method is based on structural vibrations from which the modal parameters are obtained. The literature study provides an overview of the most common vibration-based damage...
master thesis 2022
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Ashok, Aravind (author)
The advancement in the steering capabilities of fibre placement machines has improved the tailoring potential and therefore the design possibilities for composite structures. However, the larger design freedom leads to complex and non-convex design spaces. Finding the optimum solution thus becomes costly and challenging, specifically considering...
master thesis 2021
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Joshi, Siddharth (author)
<br/>Piezoelectric materials are capable of converting mechanical energy into electrical energy and vice versa. These materials have been at the forefront of technological innovations ever since their emergence in the late 19th century. Piezoelectrics have found their niche in communication, automobile, aerospace, and several other industries...
master thesis 2021
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