Searched for: subject%3A%22crack%255C+growth%22
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van Noord, Emma (author)
The increasing focus on reducing greenhouse gas emissions has led to the attractiveness of offshore hydrogen pipelines in achieving sustainable energy goals. Hydrogen, as a transport medium for energy, offers a viable alternative for transmitting large amounts of energy from offshore facilities to the shore. By storing hydrogen and subsequently...
master thesis 2023
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Dupain, Linda (author)
According to experiments the fatigue damage behaviour of fibre reinforced polymers (FRP) experiences a load sequence effect. In this report the ability of the cohesive fatigue damage model of Dávila (2020) to simulate the behaviour after a load amplitude change is investigated. For this a double cantilever beam (DCB) with fictitious material...
master thesis 2023
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Āboltiņa, Laura (author)
In the past years, the safety of steel railway bridges has been questioned due to the coped beam connection sensitivity to fatigue and fatigue crack appearance. To ensure the safety of these railway bridges, the propagation of the fatigue crack needs to be analysed by performing regular inspection on the bridges. The frequency of these is...
master thesis 2022
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Sluijs, J. (author)
Crack growth is an important failure mechanism in many engineering materials. Numerical models for crack growth have been developed within the framework of damage mechanics. All these models aim for the same goal, obtaining accurate results for crack growth under various loading conditions. Many damage models are based upon the cohesive crack...
master thesis 2020
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Malschaert, David (author)
In the course of this thesis, a research has been conducted to the application of fracture mechanics on an othotropic steel deck (OSD). Obtaining accurate predictions of crack path and fatigue life assessment were the main objectives for this thesis. As 3D crack propagation modelling in orthotropic steel decks is an arduous task, simpler studies...
master thesis 2020
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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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Scheeren, Bart (author)
Research into multi-axial fatigue requires knowledge on the through time and thickness development of the propagating crack front. In order to provide this knowledge methods must be developed to monitor crack initiation and growth during a fatigue test. The acoustic emission method has been recognised as a possible means to this end. <br/...
master thesis 2017
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Schiaretti, Matteo (author)
Fatigue is the most common source behind failures of mechanical structures. In order to study the phenomena, experiments have been performed by Lloyd's Register and other tests have been presented in literature. Performing real life fatigue experiments requires a long time, a considerable amount of money and it is size limited. <br/><br/>The...
master thesis 2017
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Coppejans, Okko (author)
This master thesis is built up around two questions. First: Is it possible to calibrate a ductile failure model, where the strain at failure is a function of stress triaxiality and Lode angle, using only a single SENB specimen? The failure model that is referred to describes local failure in a finite element model to simulate ductile fracture....
master thesis 2017
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Hangx, R, (author)
In the development of materials used for constructing aircraft, progress has been made in the production, certification and implementation of materials such as Carbon Fibre Reinforced Polymer (CFRP) and Glass Laminate Aluminium Reinforced Epoxy (GLARE). The state-of-the-art in joining techniques however, has not changed much: fastening is still...
master thesis 2017
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Bransen, M. (author)
The term Leak-Before-Break (LBB) refers to a well-established safety criterion used to assess whether cracked tanks or pipes can leak detectable amounts of fluid as a warning before catastrophic failure occurs. In this research The LBB criterion was applied to the safety assessment of spherical Liquefied Natural Gas (LNG) containment systems on...
master thesis 2016
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Rikken, M.R.A. (author)
Fulfilling our energy demands with renewable resources is one of the world’s greatest current challenges. Building offshore wind farms and using wind energy is one option to achieve this goal. The cost efficiency of offshore wind farms is still limited however, due to high construction and maintenance costs. Several research and development...
master thesis 2016
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Usman, M. (author)
In this research effect of temperature on the disbond growth rate due to fatigue load in adhesive bonds is investigated. Concept of release of strain energy has been used. In particular the effect of temperature on the relationship between disbond growth rate and strain energy released per load cycle has been investigated. The general trend...
master thesis 2016
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Bied-Charreton, A.D. (author)
Splicing technology is used to create fuselage panels due to the maximum width of the aluminium sheets of 60 inches as a result of the production process. A set of designing rules is required for the design of a spliced Glare fuselage resulting in a significant increase in complexity. Friction stir welding of the thin aluminium sheets in Glare...
master thesis 2016
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Dijkers, H.P.A. (author)
Artificially aged aluminium-lithium alloys have recently seen renewed interest in them in the aviation industry. They have a decreased density, while keeping or improving the fatigue properties compared to other aluminium alloys. Research shows that these aluminium-lithium and other advanced aluminium alloys exhibit crack turning and crack....
master thesis 2015
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Pasman, D.J. (author)
Solid round bars with a shoulder fillet are frequently used in engineering structures because it facilitates a smooth transition in thickness. However, the presence of shoulder fillets is currently neglected in the prediction of fatigue crack growth in engineering practice. Since stress concentrating locations like a shoulder fillet can have a...
master thesis 2015
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Gupta, A.G. (author)
In offshore industry, subsea pipelines are used for transporting oil and gas from wells to remote platforms and from platforms to nearby shores. A microscopic flaw in pipeline during installation and operation will grow normal to the principal stress if the threshold value of fatigue stress range is exceeded. In case, these microscopic flaws...
master thesis 2014
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Spronk, S.W.F. (author)
The most highly loaded frames of the newly developed Airbus A400M transport aircraft have glass reinforced aluminium laminate (Glare) straps attached to them to increase their resistance to fatigue damage. These straps were designed using static strength requirements for the frame. Basic justification was done in two steps. Firstly, the frame...
master thesis 2013
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Plokker, H.M. (author)
The fatigue life of an aircraft is dependent on the loads of the aircraft service spectrum. Due to the variable nature of the load spectrum, fatigue crack growth is accelerated and decelerated by interaction effects. Interaction effects, like crack closure, make an accurate prediction of the fatigue life challenging. The material GLARE, a...
master thesis 2005
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