Searched for: contributor%3A%22van+der+Zwaag%2C+S.+%28mentor%29%22
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Su, Yang (author)
Self-healing of creep-induced damage in newly designed 12Cr self-healing ferritic steels is studied. The damage healing is achieved by the segregation of supersaturated solute atoms at the free surface of the creep-induced cavities, and in this research, the healing phase is the W-riched Laves phase. Two kinds of self-healing steel with...
master thesis 2022
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Hoekman, Willem (author)
In order to establish a sustained extra-terrestrial presence, habitats need to be built on the Moon and Mars using novel materials made from local resources. Several material processing methods can be applied to transform the locally abundant regolith into materials suitable for structural purposes. One promising method is sintering. This...
master thesis 2022
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Rawat, Krishna (author)
Piezoelectric materials have the ability to convert mechanical to electrical energy (direct effect) and vice versa. They are readily used in the aerospace, automobile, telecommunication industry etc. as both sensors and actuators. For this work the focus is on the sensor application, which utilizes the direct piezoelectric effect. With the...
master thesis 2021
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Kumthekar, Anuj (author)
master thesis 2021
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Callens, Lander (author)
Unlike traditional wet-adhesives, dry adhesives are bioinspired solid polymers that owe their adhesion to hierarchical structures. Gecko’s are the most recognizable living creatures relying on this concept to climb walls. A close look at the gecko’s fingers reveals a hierarchical system of micro-and nanoscale filaments. These ensure excellent...
master thesis 2020
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Khan, Y. (author)
An experimental study is conducted on the design of actively controlled semi-permeable inserts for mitigating turbulent boundary layer noise originating from the trailing edge of an airfoil. Two sets of perforated inserts with hole diameter: 0.8 mm and hole spacing: 1.5 mm & 3 mm, are considered. The inserts are 3-D printed with a middle...
master thesis 2020
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Chen, Yu-chen (author)
Energy harvesting has become a popular topic for battery substitution in recent years. In particular, mechanical vibrational energy, one of the most common energy sources, has been intensely studied. Piezoelectric materials play a crucial role in vibrational energy harvesting as they can directly convert the mechanical energy to the desired...
master thesis 2020
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Gomarasca, Silvia (author)
master thesis 2018
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Mittal, Abhishek (author)
Piezoelectric materials have found application in wide range of devices from accelerometers to energy harvesters. They have proven their potential and versatility in aerospace, automotive, electronics and biomedical industry. Piezoelectric ceramics are not suitable for energy harvesting applications due to its brittleness and low strain levels,...
master thesis 2018
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Selvanarayanan, Hari Kumar (author)
The application of fibre reinforced thermoplastic composites in aerospace industry has increased drastically in the last decade. Carbon fibre/Polyether-ether-ketone (C/PEEK) is one of the high-performance thermoplastic composites and is replacing metallic and thermosetting counterparts in various aircrafts components. Parts made from such...
master thesis 2017
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Murali, Sneha (author)
Crack initiation and propagation in composite structures exists as a prominent knowledge gap in computational fracture mechanics. Prior to the development and implementation of fracture modules in FEM solvers, most studies were constrained to simple geometries and load cases. The set of parametric studies that constitute this thesis aims to...
master thesis 2017
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Floris, C.E. (author)
Damage in materials and structures is unavoidable, leading to the time deterioration of its functional properties (e.g. barrier, load bearing, aesthetics) and ultimate repair or replacement. Lifetime extension can be achieved by using materials with initially higher performance or using materials that can repair themselves (self-healing). The...
master thesis 2017
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Sainis, S.M. (author)
Bainite is an interesting solid-state transformation in steels and a detailed understanding of the mechanism and phase transformation kinetics is of fundamental interest as well as technological importance. In this study, the kinetics of austenite to bainitic ferrite is studied through in-situ high temperature laser scanning confocal microscopy ...
master thesis 2017
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Dieleman, C.D. (author)
Aluminium AA2024-T3 is a high strength aluminiumalloy widely used in aerospace. The strengthening copper-rich intermetallic phases, however, make the material very susceptible to aqueous corrosion and severe pitting. To protect the metal, coatings loaded with corrosion inhibitors are typically used. Traditionally, highly efficient CrVI-based...
master thesis 2016
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Rueda Ruiz, M. (author)
Thermal barrier coatings (TBC) are often applied to hot components of modern turbojet engines. These coatings increase the performance of the engine and enhance the lifetime of its structural components. Thus, improving the TBC lifetime is related with a reduction of maintenance costs and increased reliability. As an alternative to conventional...
master thesis 2016
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Zhao, Y. (author)
Recently, X65 carbon steel pipes internally clad with a thin Inconel625 alloy lining are highly used. However, during welding the Inconel625 lining in the root pass, the weld bead is uneven. To avoid weld defects in the successive passes, an additional grinding procedure is always required to flatten the weld bead. It is known that as an...
master thesis 2016
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Tombrock, A.J.C. (author)
DP600 HR is one of Tata Steels hot rolled products. It is a dual phase steel unique to Tata Steel for its two step cooling process and low coiling temperature. The finished product has encountered several surface defects, one of which are imprints. In order to find the root cause for the imprints a literature study, a factory inspection and a...
master thesis 2016
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Snel, J.S. (author)
This thesis investigated the mechanical properties and deformation behaviour of accumulative roll-bonded (ARB) Cu/Nb metallic multilayers at nanoscale layer thicknesses and temperatures up to 400 degrees Celsius. Samples with individual layer thicknesses between 7 and 63 nm were nanomechanically tested at room-temperature by micropillar...
master thesis 2016
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De Boom, K. (author)
In recent years the number of applications relying on piezoelectric sensors has increased rapidly. New applications lead to new requirements concerning material properties and functionalities. In many of the (future) applications, such as artificial robotic skin, structural health monitoring and flexible keyboards, the necessity for flexibility...
master thesis 2016
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Denissen, P.J. (author)
master thesis 2015
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