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Dissertations / Theses on the topic 'Breakdown mechanics'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Sharman, Jonathan David Brereton. "Breakdown processes in paint coatings on steel." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308541.

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2

Okunlola, A. "Mechanics of breakdown of soil aggregates under static loading and impact." Thesis, University of Reading, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373750.

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3

Mason, Darren M. "The nonlinear evolution of the elliptical instability : an example of inertial wave breakdown." Thesis, University of Bristol, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299329.

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4

Cheung, Chi Wai. "Application of fracture mechanics to dielectric breakdown in air, silicone oil and silicone rubber /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?MECH%202009%20CHEUNG.

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5

Addison, Paul Stanley. "The breakdown to turbulence of a forced vortex flow at a pipe orifice : the non-linear evolution of initially axisymmetric vortices." Thesis, University of Glasgow, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286127.

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6

Davidson, Andrew John. "High voltage breakdown in the Ramsey cell of the CryoEDM experiment : an experimental study of some relevant parameters." Thesis, University of Sussex, 2013. http://sro.sussex.ac.uk/id/eprint/44797/.

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A pressure cell apparatus has been designed, constructed and commissioned to measure the dielectric strength of liquid helium as a function of pressure for various temperatures in He I and He II. Breakdown experiments between a set of stainless steel parallel plate Rogowski profile electrodes with a separation of 1.27 mm have been made for temperatures ranging between 1.7 K to 4.2 K and applied pressures of SVP to ~ 2.2 bar. All pressure data taken above and below the λ-point exhibit similar features. At low pressure, near the SVP, breakdown voltage rapidly increases with applied pressure. Thi

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7

Brandt, Luca. "Study of generation, growth and breakdown of streamwise streaks in a Blasius boundary layer." Licentiate thesis, KTH, Mechanics, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1256.

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<p>Transition from laminar to turbulent flow has beentraditionally studied in terms of exponentially growingeigensolutions to the linearized disturbance equations.However, experimental findings show that transition may occuralso for parameters combinations such that these eigensolutionsare damped. An alternative non-modal growth mechanism has beenrecently identified, also based on the linear approximation.This consists of the transient growth of streamwise elongateddisturbances, mainly in the streamwise velocity component,called streaks. If the streak amplitude reaches a thresholdvalue, second

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8

Міняйло, О. В., Тетяна Сергіївна Сушко, Татьяна Сергеевна Сушко та Tetiana Serhiivna Sushko. "Крайова задача механіки руйнування для скінченної анізотропної пластинки з тріщинами". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65409.

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Метою дослідження є побудова ефективного аналітико-числового алгоритму, що дозволяє дослідити напруженно-деформівний стан в кожній точці скінченної пластинки, а також визначити найбільш важливі характеристики теорії руйнування: коефіцієнти інтенсивності напружень (КІН) та енергетичні потоки поблизу вершин тріщин. На основі побудованого чисельно-аналітичного алгоритму досліджується вплив геометричних та фізичних чинників на характеристики руйнування.

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9

Hrabal, Zdeněk. "Modul pro detekci lehkých prvků v železných slitinách metodou spektroskopie laserem buzeného plazmatu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-392849.

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Tato diplomová práce je zaměřena na analýzu lehkých prvků (tj. uhlík, sýra a fosfor) v železných slitinách pomocí metody laserem indukovaného plazmatu (LIBS). Hlavním cílem je vyvinout a implementovat nový modul, který bude umožňovat analýzu v hluboké ultrafialové oblasti (VUV), což je nezbytné jak pro stanovení chemického složení lehkých prvků v ocelích tak pro mnoho dalších aplikací metody LIBS. V první části je vytvořen přehled moderních přístupů optické emisní spektroskopie (OES) a rovněž jsou shrnuty tradiční techniky používané v metalurgii pro analýzu ocelí. Teorie absorpce ultrafialovéh

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10

Pearl, Alexander James. "Breakdown : mechanical dysfunction and anthropomorphism." Thesis, Manchester Metropolitan University, 2018. http://e-space.mmu.ac.uk/622002/.

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Breakdown: Mechanical Dysfunction and Anthropomorphism is a practice-led research project examining the role of mechanical breakdown in the anthropomorphic process. Current theoretical approaches to mechanical breakdown identify it as a homogenous, revelatory event "a sort of breach opened up by objects." (Baudrillard, 2004: 62). Breakdown challenges this stereotyping and seeks to examine the range of gesture and affect that differing forms of mechanical breakdown exhibit. In doing so it also develops Sherry Turkle's notion of anthropomorphism as a connective rather than ascriptive process (20

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11

Anderson, William Boyd. "Detection of lubricating film breakdown in mechanical seals." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/20148.

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12

Coaker, Brian M. "Mechanisms for triggering high-voltage breakdown in vacuum." Thesis, Aston University, 1995. http://publications.aston.ac.uk/8236/.

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The electrical and optical characteristics of a cylindrical alumina insulator (94% Al203) have been measured under ultra-high vacuum (P < 10-8 mBar) conditions. A high-resolution CCD camera was used to make real-time optical recordings of DC prebreakdown luminescence from the ceramic, under conditions where DC current magnitudes were limited to less than 50μA. Two concentric metallized rings formed a pair of co-axial electrodes, on the end-face of the alumina tube; a third 'transparent' electrode was employed to study the effect of an orthogonal electric field upon the radial conduction proces

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13

Athanassiadis, Athanasios G. "Optical breakdown acoustics : transduction and sensing underwater." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122069.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2019<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 191-199).<br>In the sea, infrastructures such as ships, pipelines, and wind turbines are exposed to harsh conditions that can wear down the structures through wave loading and corrosion. Because of these wear mechanisms, maritime structures require

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14

Peck, Thian Guan. "The mechanisms of foam breakdown by oils and particles." Thesis, University of Hull, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262430.

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15

Darmofal, David L. (David Louis). "A study of the mechanisms of axisymmetric vortex breakdown." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/12208.

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16

Lou, Xiaojie. "Mechanisms of breakdown and fatigue in ferroelectric thin films." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613026.

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17

Choi, Soon Ju S. M. Massachusetts Institute of Technology. "Breakdown Anodization (BDA) for hierarchical structures of titanium oxide." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85503.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 57-61).<br>Breakdown Anodization (BDA) of titanium dioxide is a very promising, fast fabrication method to construct micro-scale and nano-scale structures on titanium surfaces. This method uses environmentally friendly electrolytes, such as nitric acid, and can be fabricated within 30 minutes regardless of substrate size. Because the titanium dioxide is hydrophilic, the micro structured BDA surface exhibits super

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18

Hayakawa, N., H. Sakakibara, H. Goshima, M. Hikita, and H. Okubo. "Breakdown mechanism of liquid nitrogen viewed from area and volume effects." IEEE, 1997. http://hdl.handle.net/2237/6876.

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19

Smith, Adrian Michael Lloyd. "Mechanisms and products of the breakdown of contaminant element-bearing jarosites." Thesis, Birkbeck (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413235.

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20

Hwang, Jae-Won George 1980. "Elucidating the mechanisms behind pre-breakdown phenomena in transformer oil systems." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60145.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 321-334).<br>The widespread use of dielectric liquids for high voltage insulation and power apparatus cooling is due to their greater electrical breakdown strength and thermal conductivity than gaseous insulators. In addition, their ability to conform to complex geometries and self-heal means that they are often of more practical use than solid insulators. Unfortunately, as with all insulation, th

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21

Saghbini, Jean-Claude J. "Simulation of vorticity dynamics in swirling flows, mixing and vortex breakdown." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/39391.

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22

Yamada, T., T. Ishida, N. Hayakawa, and H. Okubo. "Partial discharge and breakdown mechanisms in ultra-dilute SF6 /N2 gas mixtures." IEEE, 2001. http://hdl.handle.net/2237/6754.

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23

Saniei, Mohsen. "Nature and mechanisms of the breakdown in a triggered water gap switch." Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415105.

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24

Krishnamoorthy, Aravind Ph D. Massachusetts Institute of Technology. "Modeling of mechanisms affecting the growth and breakdown of iron sulfide films." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104109.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 153-169).<br>Modeling the behavior of ionic materials in electrochemical environments is a topic of great scientific interest for important systems like like fuel cells, batteries, and catalysts and corrosion passive films. However, ex

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25

Wang, Xin. "Partial discharge behaviours and breakdown mechanisms of ester transformer liquids under AC stress." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/partial-discharge-behaviours-and-breakdown-mechanisms-of-ester-transformer-liquids-under-ac-stress(43a16189-379b-4645-870c-ccc5cb03bf06).html.

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Mineral oil has been widely used in liquid insulation of power transformers. However, it is poorly biodegradable and could cause serious contamination to the environment if a spill occurs. With increasingly strict environmental rules and regulations, there is considerable interest from the Utilities to apply esters in power transformers as substitutions to mineral oil. In order to use esters in large power transformers, their dielectric properties should be thoroughly investigated. This PhD thesis covers the experimental studies on the dielectric properties of a type of synthetic ester (Midel

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26

Saxén, Carl. "A µCT Investigation of the Electrical Breakdown Mechanisms in Mica/Epoxy Machine Insulation." Thesis, Uppsala universitet, Tillämpad mekanik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326170.

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Mica/Epoxy machine insulation is a composite material of the mineral mica, fibre-glass mesh and epoxy resin. The material is used in motors and generators rated for high voltage, where the material must withstand multiple stresses such as elevated temperatures, mechanical and electrical stresses. This is a novel investigation that focuses on the breakdown mechanisms related to electrical stress of the insulation. These include partial discharges and electrical treeing. The micro Computed Tomography (μCT) uses a series of X-ray images to visualise the interior. This provides a method for non-in

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27

Jones, Michael Charles 1971. "A study of the mechanism for vortex breakdown and some measures for its control." Monash University, Dept. of Mechanical Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7694.

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28

Logan, Claire Marissa. "The mechanisms of action of IL-17 in cartilage breakdown : implications for joint disease." Thesis, University of Newcastle Upon Tyne, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399091.

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29

Cerminara, Adriano. "Boundary-layer receptivity and breakdown mechanisms for hypersonic flow over blunt leading-edge configurations." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/412641/.

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Direct numerical simulations have been performed to study receptivity and breakdown mechanisms for hypersonic flow over blunt leading-edge configurations with imposed freestream acoustic disturbances. Both two-dimensional (2D) and three-dimensional (3D) fast and slow acoustic wave models have been used. The former has been adopted for 2D simulations over a blunt-nose wedge probe designed to measure freestream noise levels in hypersonic wind tunnels; the latter has been used to perform 3D simulations for a span-periodic blunt wedge in unswept and swept configurations, and for a three-dimensiona

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30

Okubo, Hitoshi, Takanori Yasuoka, Tomohiro Kato, and Katsumi Kato. "Electrode Conditioning Mechanism Based on Pre-breakdown Current under Non-uniform Electric Field in Vacuum." IEEE, 2008. http://hdl.handle.net/2237/12133.

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31

Lakey, Rachel Louisa. "The effects of anti-inflammatory drugs on cartilage breakdown and their mechanism of action chondrocytes." Thesis, Northumbria University, 2008. http://nrl.northumbria.ac.uk/3118/.

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The progressive loss of cartilage matrix is a major characteristic of arthritic disease, ultimately leading to a loss of joint function. A number of therapeutics are used in the treatment of arthritic disease, with non-steroidal anti-inflammatory drugs used to treat the pain and inflammation seen in osteoarthritis and rheumatoid arthritis, whilst disease modifying anti-rheumatic drugs are used to slow disease progression. However it is not fully understood if and how many of these drugs effect the disease processes in arthritis. The objective of this study is to look at a number of therapeutic

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32

Mouskeftaras, Alexandros. "Study of the physical mechanisms involved in the femtosecond laser optical breakdown of dielectric materials." Palaiseau, Ecole polytechnique, 2013. https://theses.hal.science/pastel-01006041/document.

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Nous étudions de façon expérimentale les mécanismes d'excitation et de relaxation électroniques, sous irradiation par impulsion laser (UV et IR) ultracourte (60 fs - 1 ps), dans les matériaux diélectriques à large bande interdite. Les régimes explorés vont de l'ionisation sans modification permanente (quelques TW/cm²) jusqu'au régime ablatif (dizaines de TW/cm²). L'objectif de ce travail à caractère fondamental est la compréhension du processus d'endommagement laser dans nos conditions d'irradiation. D'abord, la connaissance de la densité électronique du matériau irradié aux différents stades

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33

Ghaffarian, Niasar Mohamad. "Mechanisms of Electrical Ageing of Oilimpregnated Paper due to Partial Discharges." Doctoral thesis, KTH, Elektroteknisk teori och konstruktion, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-159670.

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In this thesis, partial discharge (PD) phenomenon in oil-impregnated paper (OIP) is investigated under accelerated electrical stress. The thesis is mainly focused on the characteristic of PD activity and the influence it has on the insulation properties of OIP. PD source was created by introducing an air filled cavity embedded between layers of OIP. PD activity is investigated from the initiation up to final puncture breakdown of the OIP. The time-evolution of number, maximum magnitude and average magnitude of PD is investigated for cavities with different diameter and height. It was found tha

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34

Pond, Ian. "Toward an Understanding of the Breakdown of Heat Transfer Modeling in Reciprocating Flows." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/477.

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Reynolds average Navier-Stokes (RANS) modeling has established itself as a critical design tool in many engineering applications, thanks to its superior computational efficiency. The drawbacks of RANS models are well known, but not necessarily well understood: poor prediction of transition, non-equilibrium flows, mixing and heat transfer, to name the ones relevant to our study. In the present study, we use a direct numerical simulation (DNS) of a reciprocating channel flow driven by an oscillating pressure gradient to test several low- and high-Reynolds' RANS models. Temperature is introduced

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35

Olofsson, Joel. "Thermo-mechanical analysis of cryo-cooled electrode system in COMSOL." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-353895.

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In the planned linear accelerator called Compact Linear Collider, CLIC, electrons and positrons will be accelerated to velocities near the speed of light. A limiting factor in accelerating structures are vacuum breakdowns, which are electrical discharges from a surface as a result of a large electric field being applied. In the preparatory studies for the CLIC, Uppsala University in collaboration with The European Organization for Nuclear Research, CERN, is building a DC Spark system to analyze vacuum breakdowns. This system containing large planar electrodes will be cooled down all the way do

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36

Mijwel, Sara. "The effect of resistance training on molecular mechanisms responsible for muscle protein breakdown in healthy old men." Thesis, Örebro universitet, Institutionen för hälsovetenskap och medicin, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-25854.

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37

Deloge, Matthieu. "Analysis of ultrathin gate-oxide breakdown mechanisms and applications to antifuse memories fabricated in advanced CMOS processes." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0097/document.

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Les mémoires non-volatiles programmables une fois sont en plein essor dans le monde de l’électronique embarquée. La traçabilité, la configuration ou encore la réparation de systèmes sur puce avancés font partis des applications adressées par ce type de mémoire. Plus particulièrement, la technologie antifusible présente des propriétés de sécurité autorisant le stockage d’information sensible.Ce travail de thèse est orienté vers la compréhension des mécanismes de claquage d’oxydes minces sollicités pour la programmation des cellules antifusibles ainsi que l’intégration au niveau système de moyen

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38

Moberg, Marcus. "Effects of exercise and amino acid intake on mechanisms regulating protein synthesis and breakdown in human muscle." Doctoral thesis, Gymnastik- och idrottshögskolan, GIH, Eva Blomstrands forskningsgrupp, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-4371.

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Skeletal muscle adapts differently to specific modes of exercise, where resistance training results in muscle growth and endurance training induces mitochondrial biogenesis. These are results of molecular events that occur after each exercise session, increasing the expression of specific genes and the rate of both synthesis and breakdown of protein. The rate of protein synthesis is controlled by the mTORC1 signaling pathway, which is potently stimulated by resistance exercise and amino acid, and their combined effect is needed for muscle growth. The essential amino acids (EAA) are responsible

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39

Wang, Yak-Nam. "The response of soft tissues to mechanical loading at different structural levels and the implications in their breakdown." Thesis, Queen Mary, University of London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325479.

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40

Kadri, Shabibahmed Jehangir. "Microstructural breakdown and scale-up effects in equal channel angular extrusion of cast copper." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4341.

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The primary objectives of this study were: (1) to verify the effectiveness of ECAE to induce equal amounts of strain and grain refinement in bars of different cross-sectional areas, (2) to determine the effectiveness of ECAE in breaking down the as-cast macrostructure in CDA 101 Cu and in producing a homogeneous material containing micron-scale grains upon recrystallization, and (3) to determine a thermomechanical processing (TMP) schedule (from the ones examined) that produces the best microstructure in terms of grain size and uniformity. The effects of extrus ion route, levels of strain and

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41

Lipski, Deborah. "Study of the mechanisms of local auto-antigen presentation and inner blood-retinal barrier breakdown during non-infectious uveitis." Doctoral thesis, Universite Libre de Bruxelles, 2018. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/262873.

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Le développement de l’uvéite auto-immune expérimentale (UAE) se fait en plusieurs étapes, commençant par l’activation en périphérie de lymphocytes T auxiliaires auto-réactifs spécifiques d’antigènes rétiniens, leur migration vers l’œil, où ils sont réactivés de façon antigène-spécifique et CMH II (complexe majeur d’histocompatibilité de classe II)-dépendante pour enfin induire la rupture de la barrière hémato-rétinienne (BHR), permettant le recrutement aspécifique de cellules inflammatoires responsables des dommages tissulaires. Tous ces processus représentent des cibles potentielles pour des

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Gu, Yong, and 顧勇. "Targeting caveolin-1 as a therapeutic approach to prevent blood-brain barrier breakdown in ischemic stroke : from mechanism to isoflavones treatment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/197561.

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Our group previously reported that caveolin-1 (cav-1) was down-regulated by nitric oxide (NO) during cerebral ischemia and reperfusion (I/R). However, the role of cav-1 in regulating blood-brain barrier (BBB) permeability is unclear yet. This study aims to address whether the loss of cav-1 induced by NO production affects BBB permeability. Data showed that the expression of cav-1 in isolated cortical microvessels was down-regulated in ischemia-reperfused rat brains subjected to middle cerebral artery occlusion (MCAO). Treatment of NG-nitro-L-arginine methyl ester (L-NAME), a nitric oxide synth

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43

Tamura, Ayaka. "Mechanism of laser-plasma formation in water and the application to in-situ elemental analysis." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199322.

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44

Trayhorn, Benjamin. "Power plant system reliability analysis : applications to insurance risk selection and pricing." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7906.

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Within the Speciality Engineering Insurance Field the use of engineering opinion is the main component in risk analysis for underwriting decision making. The use of risk analysis tools to quantify the risk associated with perils such as mechanical breakdown is limited. A reliability model for the risk analysis of mechanical breakdown risk for the power generation sector, PowerRAT, has been developed and its performance evaluated against historic claim data. It has proven to closely forecast actual losses over a portfolio of power plants, and differentiate between power plant type; conventional

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45

Michel, Anna Pauline Miranda 1976. "Laboratory evaluation of laser-induced breakdown spectroscopy (LIBS) as a new in situ chemical sensing technique for the deep ocean." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42296.

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Thesis (Ph. D.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and the Woods Hole Oceanographic Institution), 2007.<br>Includes bibliographical references.<br>Present-day expeditionary oceanography is beginning to shift from a focus on short-term ship and submersible deployments to an ocean observatory mode where long-term temporally-focused studies are feasible. As a result, a critical need for in situ chemical sensors is evolving. New sensors take a significant amount of time to develop; thus, the

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46

Baruah, Monita. "Analysis of some batch arrival queueing systems with balking, reneging, random breakdowns, fluctuating modes of service and Bernoulli schedulled server vacations." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/14524.

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The purpose of this research is to investigate and analyse some batch arrival queueing systems with Bernoulli scheduled vacation process and single server providing service. The study aims to explore and extend the work done on vacation and unreliable queues with a combination of assumptions like balking and re-service, reneging during vacations, time homogeneous random breakdowns and fluctuating modes of service. We study the steady state properties, and also transient behaviour of such queueing systems. Due to vacations the arriving units already in the system may abandon the system without

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47

Fridholm, Victoria. "IMPROVE MAINTENANCE EFFECTIVENESS AND EFFICIENCY BY USING HISTORICAL BREAKDOWN DATA FROM A CMMS : Exploring the possibilities for CBM in the Manufacturing Industry." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-39816.

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Purpose: Explore how historical data from a CMMS can be used in order to improve maintenance effectiveness and efficiency of activities, and investigate the possibilities for CBM in the manufacturing industry in the context of digitalization. Research questions: RQ1: To what extent could condition-based maintenance or other maintenance types being used in order to predict, prevent or in other way eliminate historical breakdowns/faults? RQ2: Which significance has an organization's degree of maturity to reduce the number of breakdowns? Method: A case study was performed at Volvo Construction

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Settembre, Antonio. "Failure analysis of HVDC cable joint interfaces." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/24677/.

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Negli ultimi anni l’impiego sempre più diffuso di energie rinnovabili e la necessità di una rete sempre più robusta ed interconnessa ha reso fondamentale l’impiego di linee in HVDC. All'interno di queste linee i componenti più soggetti a guasti sono giunti e terminali, i quali presentano una zona particolarmente critica: la zona interfacciale. Quest’ultima è soggetta ad un elevato campo elettrico tangenziale, il quale cambia la sua distribuzione a seconda di vari fattori. Questo lavoro ha dunque come obiettivo quello di indagare a fondo su tale zona, per scoprirne i meccanismi di guasto e per

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Zhao, Yong. "Morphology and electrical trees in semi-crystalline polymers." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314355.

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Millesimo, Maurizio, and Maurizio Millesimo. "OFF-State Reliability of pGaN Power HEMTs." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/19974/.

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The concern for climate changes and the increase in the electricity demand turned the attention towards the production, sorting and use of electric energy through zero emission (CO2) and highly efficient solutions (e.g. for electric vehicle), respectively. As a consequence, the need for high performance, reliable and low cost power transistors adopted for power applications is increasing as well. Gallium nitride seems to be the most promising candidate for the next generation of devices for power electronics, thanks to its excellent properties and comparable cost with respect to Si counterpa

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