Searched for: department%3A%22Aerospace%255C%252BStructures%255C%252B%2526%255C%252BMaterials%22
(1 - 20 of 60)
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de Boer, T. (author)Both experimental and numerical studies have shown that the crack-bridging is one of the most significant mechanism contributing to the fracture toughness of natural materials like nacre and bone. This study aims to explore if additive manufactured lattice structures can be used to bridge fatigue cracks as well, thereby improving the fracture...master thesis 2017
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Ran, J. (author)Strut-braced wing aircraft are believed to have great potential for the future of large passenger air transport with regard to fuel burn reductions due to the combination of high structural and aerodynamic efficiency. Strut-braced wings deviate from conventional wings in the fact that they employ additional bracing at certain span location away...master thesis 2017
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Bots, M.J. (author)Cellular solids are characteristically excellent energy absorbers due to their capacity to store large amounts of energy through compression. A bioinspired design approach identified the Pomelo fruit (Citrus Maximus) as a biological role model for energy absorption. Fruit peels’ biologically most important functions lies in the need to provide...master thesis 2017
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Urlings, A.P.C. (author)The goal of this research was to get a better understanding of the consequences of the integration of a battery electric powertrain on the chassis layout and its type approval in the European Union. The Roding Roadster was used as reference throughout this research. Based on the legislation for type approval within the European Union,...master thesis 2017
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Narayana Swamy, J. (author)With an ever increasing demand for energy, the renewable energy sector is gaining a lot of importance. Among the various renewable energy sources, wind energy is becoming more attractive compared to its counterparts (solar, biomass, etc.). Some of the main advantages of wind energy are faster payback time and that power generation is possible...master thesis 2017
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Righi, R. (author)In order to use composite materials in automotive production while ensuring that passengers safety it is crucial to fully understand the strain rate effect on their mechanical properties.This study implements a strain rate dependent 3-point bending test setup for a high rate servo-hydraulic testing machine. A finite element model to simulate...master thesis 2017
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Da Cunha Saraiva, F. (author)Thermoplastic composites are very attractive for aerospace structures due to their high specific strength and stiffness, enhanced toughness and high temperature resistance. One of the manufacturing methods used to produce thermoplastic composite parts is press forming. Press formed parts typically have constant thickness and fibre orientation....master thesis 2017
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Baar, S. (author)Many composite failure criteria suffer from serious flaws related to prediction accuracy and the number of tests required to apply them, as found for example during the World Wide Failure Exercises. In 2001, Jon Gosse of Boeing Phantom Works developed a new criterion for matrix failure. Initially known as Strain Invariant Failure Theory (SIFT),...master thesis 2017
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- Shirke, R.V. (author) master thesis 2017
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Michielssen, J. (author)This research investigates the effect of a varying build orientation and different heat treatment on the crack propagation properties of SLM Ti-6Al-4V. Both crack propagation rate and direction are investigated. Fatigue tests are performed with a constant cyclic load and single edge notch specimens. Ten unique types of specimens were tested by...master thesis 2017
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Callens, S.J.P. (author)The concept of twin matrix composites was proposed in the 1980s by Vasiliev and Salov1, as a means to increase the transverse tensile failure strain of unidirectional composites without sacrificing the longitudinal tensile strength. This could be achieved by impregnating glass fiber bundles with a stiff epoxy matrix, and embedding the cured...master thesis 2017
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van der Ree, M. (author)In the aircraft industry there is an increasing need for cost-effective assembly methods for dissimilar thermoplastic/thermosetting composites. Fusion bonding provides a good alternative to mechanical fastening, and may be applied to thermosetting composites by using a thermoplastic interlayer. The research project ‘HyPoComp’ at Delft University...master thesis 2016
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Tselikos, G. (author)Additive Manufacturing technology has gained a significant amount of interest in both industry and academia in recent years. Current research, though, is still mainly focused on the printing of structural components. In the future there will be a need for smart materials to come to fully integrated components. These smart materials include...master thesis 2016
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- Vial, S. (author) master thesis 2016
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de Vries, R. (author)The general trend in the aerospace industry is to optimise lightweight and highly flexible wing structures made of composite materials. This flexibility gives rise to static and dynamic aeroelastic instability problems. Research by Kim and Lee, Murua et al., and Drazumeric et al. have proven that chord-wise flexibility has a significant effect...master thesis 2016
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van den Berg, L.J. (author)A FEM-based tool was developed for optimization of the geometry of an adhesive joint for implementation in a composite micro truss structure. A genetic algorithm was employed to optimize the adhesive fillet and adherend local end geometry towards a uniform state of strain in the adhesive layer. It was found that the peak maximum principal strain...master thesis 2016
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Suiker, R.L. (author)This thesis is about the structural design of a composite non-pressure hull of a double hull submarine. After performing a background research in which amongst others load cases have been described, a tool has been created for the initial sizing of the pressure hull and non-pressure hull (i.e. outer hull and superstructure). Parts of the tool...master thesis 2016
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Zhelyazkov, E.S. (author)Damage is found in resin rich bead corner radii of RTM 6 epoxy-based composite ribs due to in-service thermal-mechanical loading after an aircraft inspection. The same types of damage are obtained through pure thermal cycling of a single bead. However, thermal cycling is a time-consuming process. Therefore, a faster way of damage investigation...master thesis 2016
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Tandon, S. (author)A parametric finite element model incorporating virtual crack closure technique was developed in order to determine the critical disbond size and location for disbond growth in an adhesively bonded skin stiffened structure, subjected to uniaxial compression loading. The model was validated using static experimental tests on both pristine and...master thesis 2016
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Kuitert, R. (author)This Master thesis investigates the feasibility of single point incremental forming as a method to die-less preform double curved aluminum sheets used in GLARE laminates. A small scale experimental setup was used to see if this method could achieve the required speed and accuracy. The results of these experiments were translated to a large scale...master thesis 2016
Searched for: department%3A%22Aerospace%255C%252BStructures%255C%252B%2526%255C%252BMaterials%22
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