Searched for: contributor%3A%22Alderliesten%2C+R.C.+%28mentor%29%22
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Alcaraz, Mathilde (author)
Fibre metal laminates (FML) were initially conceived as a hybrid material, aiming to create synergy between the impact resistance of metals and excellent fatigue resistance of fibre reinforced polymers. The purpose of this approach was to overcome the limitations of single-material structures. However, despite its considerable promise, the use...
master thesis 2023
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Zhang, Chi (author)
In recent years, the wind energy industry shows more and more interest in composite materials manufactured with a new process called pultrusion. The advantage of pultruded composite plates includes high fiber volume fraction, low price and simplified blade manufacturing. However, pultruded plates are fully cured and crosslinking is absent at...
master thesis 2023
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Smit, Lars (author)
This study evaluates the potential danger of hail impacts on stiffened composite aircraft structures. Test specimen are created using Carbon Fiber Reinforced Polymer (CFRP) with and without an Aluminium longitudinal stringer. These specimen are first indented to explore the effect and behaviour of stiffening elements and varying boundary...
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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Desiderio, Marco (author)
master thesis 2023
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Amierie, Shahier (author)
Fiber Metal Laminates needs to be seen as a construct of its individual constituents rather than a material on which the industry has capitalized on. Therefore, analytical models must be made in order to predict the mechanical behavior of the laminates which would reduce the big test matrix for defining empirical values for design allowables. An...
master thesis 2022
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van der Panne, Mike (author)
Composite materials have multiple failure modes. Most of these failure modes are dedicated to the different layers, e.g., delamination. Unfortunately, these damages can occur internally, causing it to be invisible to the naked eye. A better understanding of how this happens and what causes it, is required to ensure safety. Therefore, for this...
master thesis 2022
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Dotman, Thom (author)
The demand for sustainability in aviation is at a historical peak. Efforts from industry and institutions have made the conventional tube-and-wing aircraft greatly efficient, to the degree that a performance ceiling is being approached. Unconventional aircraft configurations promise to reduce fuel burn further, at the cost of design complexity...
master thesis 2021
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Narayanappa, Karthik (author)
Joining structural components in aircraft is generally performed through mechanical fastening. The interaction of bearing and bypass stresses in composite bolted joints causes a reduction in the static strength of the joint. The bearing-bypass diagram determines the bearing and net-section failure modes. This thesis work aims to provide a design...
master thesis 2021
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Beyens, Michiel (author)
This report describes the research I have done during my master thesis on the subject of the effect of temperature on fatigue delamination growth. It is the result of a thourough literature study and an extensive experimental campaign under supervision of René Alderliesten and Liaojun Yao. This report informs the reader about the process I have...
master thesis 2021
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Ganesh Ram, Srinivasan (author)
The current generation of commercial aircrafts extensively use composite materials such as Carbon Fibre Reinforced Polymers (CFRP) in both exposed and primary structures. These materials lack through-thickness reinforcement and are hence susceptible to out-of-plane impact damages. Barely visible impact damage caused by low energy impacts poses a...
master thesis 2021
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Mathew, Joan (author)
With a growing demand for longer blades in the wind turbine industry for higher rated power per turbine, a structurally sound blade-root connection is of commercial importance. Bushing connections have been a commercially favoured design in the past few years, replacing the commonly used T-bolt connection as the joining method of choice. The new...
master thesis 2021
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van Baars, Sebastiaan (author)
The goal of this dissertation was to integrate the models developed by the Intelligent Maintenance Systems (IMS) group of ETH Zürich, with a dataset typical to the Structural Integrity and Composites (SI&amp;C) group of the TU Delft. To achieve this objective, the open source Guided wave dataset from the NASA Prognostics Center of Excellence...
master thesis 2021
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den Ouden, Hajo (author)
The relation between planar delamination growth, induced by transverse quasi-static load case, and the coupon delamination validation tests was investigated by evaluating the delamination criteria. The delamination criterion that allowed to describe planar delamination growth was the strain energy density criterion. An analytical study was...
master thesis 2020
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GUPTA, Chetan (author)
Joining of aerospace structures has been accomplished using mechanical fasteners since the advent of flight. With the growing application of lightweight composite structures in aircrafts, joining methods involving fasteners have been under scrutiny. The lack of material plasticity and high notch sensitivity of composites in the presence of...
master thesis 2019
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van Maris, Rutger (author)
This thesis presents a model that is able to predict fatigue crack growth and damage directionality in non-conventional Fibre Metal Laminates (FMLs) in CentreCracked Tension (CCT) specimens. Non-conventional FMLs encompass all FMLs other than standardised ones such as GLARE. FMLs can be made non-conventional by using multiple fibre types, any...
master thesis 2019
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Roeleven, Niek (author)
This thesis concerns the optimal design of wind turbine blades for bend twist coupling effects. Bend-twist coupling effects can prove to be an effective way of reducing fatigue damage and root bending moments for a wind turbine blade. However, how can bend-twist coupling be incorporated into a wind turbine blade considering the many structural...
master thesis 2018
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Kořán, Krystof (author)
Local metal hybridization is a practice, wherein composite layers are substituted by equally thick metallic foils in a finite region of the laminate. The method can be used to locally increase the bearing strength of the laminate, but also introduces a potential weak-point. The transition zone (TZ) between the fully composite and hybrid laminate...
master thesis 2018
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de Haan, Gerardo (author)
Bearing-bypass behaviour for composites is different than for metals and therefore this behaviour needs to be re-evaluated. This thesis work aims to provide an initial test set-up to map the bearing- and bypass behaviour in Fibre Metal Laminate mechanical joints, to develop a simple method which can be used by engineers for joint design. This...
master thesis 2018
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Kuipers, Rutger (author)
New methods for aircraft movables introduce oblique- and out-of-plane loads on lug joints. With the introduction of these loads on lugs the need arises for a more detailed fatigue life prediction method. <br/><br/>Therefore, the thesis research focused on creating a methodology for predicting the fatigue life for lug joints subjected to combined...
master thesis 2018
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