Dissertations / Theses on the topic 'Crack'
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Lee, Woong. "Crack deflection and interface cracks in layered composites." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627252.
Full textMcFadyen, Neil B. (Neil Barry) Carleton University Dissertation Engineering Mechanical. "Fatigue crack growth in semi-elliptical surface cracks." Ottawa, 1987.
Find full textHejman, Ulf. "On initiation of chemically assisted crack growth and crack propagation paths of branching cracks in polycarbonate." Licentiate thesis, Malmö högskola, Teknik och samhälle, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-7790.
Full textPatel, Surendra Kumar. "Experimental And Numerical Studies On Fatigue Crack Growth Of Single And Interacting Multiple Surface Cracks." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/276.
Full textCORBANI, SILVIA. "CRACK GROWTH WITH PARTIAL BENDING-INDUCED CRACK CLOSURE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=23847@1.
Full textCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Neste trabalho são investigadas experimentalmente e numericamente as mudanças de geometria em trincas inicialmente passantes submetidas a carregamento remoto de flexão pura induzindo fechamento parcial das faces da trinca. Esse crescimento de trinca pode ocorrer numa variedade de estruturas com defeitos pré-existentes, tais como fuselagens de aviões, cascos de navios, vasos de pressões e pontes metálicas. O carregamento de flexão pura ocasiona regiões de tração e compressão na frente da trinca. É inquestionável que parte das faces da trinca sob compressão fecha independentemente de qualquer mecanismo de fechamento; e outra parte das faces da trinca, por outro lado, sob tração cresce mudando gradualmente de geometria. Após realizar ensaios em corpos-de-prova de aço ASTM A-36, foi observado que tais carregamentos geram uma quina na frente da trinca, que é a transição de uma geometria parcialmente passante e um trecho remanescente da geometria inicial. Para entender a distribuição do fator de intensidade de tensão em tais frentes de trinca, suas geometrias foram reproduzidas em um modelador tridimensional de mecânica da fratura linear elástica, o FRANC3D, acoplado a um programa de análise de elementos finitos (ABAQUS). Com este sistema acoplado, foram executadas análises considerando efeitos não lineares causados pelo contato das faces da trinca sob compressão. Verificou-se a necessidade de propor metodologias para tratamento dos resultados numéricos na quina, obtendo-se predições eficientes das mudanças na geometria da trinca. Contudo, a estimativa de vida, quando se compara taxas de crescimento da trinca obtidas em um corpo-de-prova sob tração cíclica e as taxas em um corpo-de-prova sob flexão com fechamento parcial da trinca, foi melhor reproduzida usando um fator de correção de fechamento da trinca. Adicionalmente, uma série de expressões empíricas normalizadas para geometrias da trinca e fatores de intensidade de tensão são propostas.
This work investigates experimentally and numerically how the front of initially through edge cracks in plate changes after they pass to be remotely fatigue loaded under pure bending to induce partial closure of the crack faces. This type of crack growth problem can occur in a variety of structures with preexisting defects, such as aircraft fuselages, ship hulls, pressure vessels components, and steel bridges. The bending loads induce tension and compression regions along the crack front, with the part of the crack faces that work under compression undoubtedly closed by the load, independently of any other closure mechanism. The part of the crack faces that work under tension; on the other hand, crack grows by fatigue gradually changing its shape. After performing tests on ASTM A36 steel specimens, it was observed that the bending load induces a kink on the crack front, in the transition between the part through crack created on the tension side and initial crack geometry. To understand the distribution of the stress intensity factor along such crack fronts, the measured crack shapes were reproduced in a three-dimensional fracture mechanics modeler (FRANC3D) coupled to a finite element analysis program (ABAQUS). With this coupled system, linear elastic stress analysis simulations were performed considering the nonlinear effects caused by the crack face contact in the compressed region. In particular, methods had to be proposed to treat numerical noise around the kink. The proposed methodology efficiently predicts the observed crack front shape changes; although the observed fatigue lives were better reproduced using a crackclosure correction factor when compared to crack growth data obtained from standard compact tension specimens. In addition, a series of normalized empiric expressions for both crack front shapes and stress intensity factors are proposed.
Milonopoulos, Alexis. "Máquina crack." Pontifícia Universidade Católica de São Paulo, 2014. http://tede2.pucsp.br/handle/handle/2487.
Full textConselho Nacional de Desenvolvimento Científico e Tecnológico
Based on a cartographic writing, Crack Machine shows the games of power and the struggling forces within the cracolandia field, pointing out not only the battles, the gears and specific arrangements placed on networks of strategic places, but also dislocations, sinuosity, transversals, tracks, ruts and thresholds that cross the whole cracolandia issue and question our politics. By showing the profusion of useless actions in that area this dissertation treats this matter reaching beyond the discussions about hygienization process and the real estate speculation, pointing out another dimension of the State and the politics and demonstrating a machine that lives off exclusion, speculation, immolation, safety and potentializing more and more lucrative businesses that go from wars against drugs to humanitarianism. In another movement, it exposes the matter of irrecoverable population management, extrapolating the cracolandia space and the discussion about crack cocaine and the control of the undesirable population through technologies that provide administration and risk management. It also shows how these ungovernable populations have been, also with the formation of a new drug market, the main effect of the austerity politics that have taken the globe, questioning our model of society and our political rationality related to the way power has struggled to manage populations since the appearance of the biopower. Taking a step forward from a strictly biopolitical analysis, rewriting the to make die and to let die in the mark of power technologies, pointing out how death became a normal governmental mechanism, inserted in a military-political project of war on drugs and being a privileged strategy that allows the creation of a tension between to make live, to make die and to let die
A partir de uma escritura cartográfica, Máquina Crack mostra jogos de poder e forças em luta no campo da cracolândia, evidenciando não só batalhas, engrenagens e arranjos específicos situados em redes de lugares estratégicos, mas também deslocamentos, sinuosidades, transversais, rastros, sulcos e limiares que atravessam todo a questão da cracolândia e que colocam a nossa política em questão. Ao mostrar a profusão de ações inócuas na área, trata esta questão indo além das discussões acerca de processos de higienização e do fenômeno da especulação imobiliária, evidenciando uma outra dimensão do Estado e da política e demonstrando toda uma máquina que vive da exclusão, da especulação, da imolação e da segurança e que cada vez mais potencializa lucrativos negócios que vão da guerra às drogas ao humanitarismo. Em um outro movimento, expõe a problemática da gestão de populações irrecuperáveis, extrapolando o espaço da cracolândia e a discussão em torno do crack e problematizando a questão da gestão estratégica de populações, mais precisamente da contenção e do controle de populações indesejáveis por meio de tecnologias que propiciam a administração e a gestão de riscos. Mostra também como estas populações ingovernáveis têm sido, juntamente com a formação de um novo mercado de drogas, o principal efeito das políticas de austeridade que tem tomado o globo, colocando em xeque nosso modelo de sociedade e nossa racionalidade política, relacionada ao modo com que o poder esforçou-se para gerir populações desde o aparecimento do biopoder. Dando um passo para além de uma análise estritamente biopolítica, reinscreve o fazer morrer e o deixar morrer no marco das tecnologias de poder, evidenciando como a morte tornou-se um mecanismo normal de governo, inserido-se em um projeto político-militar de guerra às drogas e sendo uma estratégia privilegiada que permite a criação de uma tensão singular entre fazer viver, fazer morrer e deixar morrer
Mohammad, Noor. "Desiccation Cracking Behaviour in Thin Bentonite Layers." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/22231.
Full textLanfranchi, Noe͏̈l. "Toxicologie du crack." Paris 5, 1992. http://www.theses.fr/1992PA05P152.
Full textZanotto, Daniele Farina. "Usuários de crack." reponame:Repositório Institucional da UFSC, 2016. https://repositorio.ufsc.br/xmlui/handle/123456789/172180.
Full textMade available in DSpace on 2017-01-03T03:15:53Z (GMT). No. of bitstreams: 1 343122.pdf: 1296653 bytes, checksum: fb56bd92cf8165b2e622c174b163e35a (MD5) Previous issue date: 2016
O consumo e os conceitos do uso de drogas passaram por modificações em seu significado no desenrolar da história. Hoje é o crack que detém a atenção e é veiculado constantemente pelos meios de comunicação. Seus primeiros registros no Brasil datam do final dos anos 1980, mas somente a partir de 2010 sua visibilidade ganhou mais espaço nas pesquisas, na atenção e assistência a saúde, no Plano de Enfrentamento do Governo Federal, mas principalmente na mídia, escrita, falada e televisionada. Diante desse cenário esta tese parte do pressuposto que o conhecimento transmitido por reportagens forma opiniões sobre o tema, e essa forma de apresentar o usuário de crack vem na contramão da Reforma Psiquiátrica Brasileira. A Lei nº 10.216/2001, que dispõe sobre a proteção e os direitos das pessoas portadoras de transtornos mentais e redireciona o modelo assistencial em saúde mental, não foi suficiente para atingir estas lacunas e são reproduzidas, por esta via de informação, formas biomédicas e medicalizadas do cuidado a estes indivíduos. Dessa forma desenvolvemos uma pesquisa documental com abordagem qualitativa, que buscou compreender como os usuários desta droga são descritos nas reportagens de um jornal e duas revistas de circulação nacional nos últimos 5 anos. O material encontrado foi submetido à análise textual discursiva. A base teórica para acessar o objeto de estudo contou com os autores Michel Foucault, Erwin Goffman, Howard Becker e John Thompson. Buscamos, por meio do percurso metodológico e marco teórico, desnaturalizar as maneiras como os discursos sobre os usuários de crack são veiculados pela mídia. Nosso corpus de pesquisa mostrou que as propostas de cuidado, presentes na maioria das reportagens, continuam mantendo seu caráter disciplinar e normalizador, muito mais do que terapêutico em relação aos usuários de crack. Bem como na história da loucura na Idade Clássica de Foucault, estas pessoas continuam sendo excluídas com o intuito de deixar a população livre dos perigos de seu convívio. Os textos analisados também permitiram afirmar que o discurso veiculado pela mídia constrói no senso comum um perfil negativo sobre o usuário de crack, permeado por preconceito e estigma. É transmitido de forma sensacionalista e em alguns casos higienista, dando ênfase ao enfrentamento aos usuários e não somente à droga em si. Por fim, a forma como os usuários de crack são apresentados pela mídia é capaz de materializar as representações da classe dominante e de refletir na forma em que a sociedade convive com eles. Entende-se como classe dominante aquela representada pelo modelo biomédico de cuidado em saúde mental.
Abstract : The consume and the ideas of drugs use have been changed in the course of time. Nowadays, the crack cocaine got so visibility in the media. Althought your history on Brazil began in the eights end, the studies, the healthcares, the Federal Combat Plan and the media (writennpress, oralpress, tvpress) have been show it from the penultimate year of first decade of 21 century. In view of this, this thesis pressuppose that the reports make ideias about the crack cocaine users. This description, however, affront the brasilian Psychiatric Reform. The reports reveal that the Law 10.216/2001 doesn´t implanted inside de the brasilian society. The biomedics healthcares are still strongs, same more than ten years after that. This law intend protect and guarantee the citizens mental disorders rights as well as reorganize the mental heath politics. The reseach is a documental qualitative study. The aim is comprehend the descriptions about the crack cocaine users in a national newspaper and in two national magazines between january 2009 and july 2015. The reports was submitted to discourse textual analysis. Michel Foucault, Erwin Goffman, Howard Becker and John Thompson compose the theoretical base. We seek denaturalize the media discourses about the crack cocaine users. According with our reseach corpus, the heathcares still keep a normalizing and disciplining line much more than a real therapy. As in Foucault´s madness history, the crack cocaine users currently are censure to exclusion. The idea is repel them to avoid your problems. The reports created a negative portrait of crack cocaine users. This portraits are prejudice and full of stigmas. The discourse is sensacionalist and sometimes hygienist, emphasizing the confront with the crack cocaine users. At last, the crack cocaine users portraits are still controled by the biomedic model of mental health.
Yandow, Chantelle. "Crack mothers, crack babies, and black male dope dealers productions of deviance during america's crack cocaine panic in the 1980s." Honors in the Major Thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/529.
Full textB.A.
Bachelors
Arts and Humanities
Religious Studies
Perng, Jia-Der. "Analysis of crack propagation in asphalt concrete using a cohesive crack model." Connect to this title online, 1989. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1094737677.
Full textBian, Lichun, and 卞立春. "Fatigue crack growth analysis of metallic plates with an inclinedsemi-elliptical crack." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31242844.
Full textFuleki, Daniel M. Carleton University Dissertation Engineering Mechanical and Aerospace. "Crack initiation and short crack growth characteristics of notched merl 76 specimens." Ottawa, 1995.
Find full textGIULIETTI, NICOLA. "Crack Analyser: a novel image-based NDT approach for measuring crack severity ." Doctoral thesis, Università Politecnica delle Marche, 2022. http://hdl.handle.net/11566/295503.
Full textEurope’s ageing transport infrastructure needs effective and proactive maintenance in order to continue its safe operation during the entire life cycle; European countries have to allocate huge resources for maintaining their service-ability level. This give rise to the necessity of an urgent need to adopt faster and more reliable monitoring inspection approaches to help tackling these issues. The deterioration of structures is most often foreseen by the formation of cracks on concrete surface. The presence of cracks can be a symptom of various problems like expansion and shrinks due to temperature differences, settlement of the structure, improper cover provided during concreting, corrosion of reinforcement steel, heavy load applied, insufficient vibration at the time of laying the concrete or loss of water from concrete surface shrinkage, therefore the identification, measurement and monitoring of cracks on the concrete surface becomes of primary importance. The main currently adopted inspection methods rely on visual marking and rulers, long and cumbersome activity, prone to errors and poorly objective on quantitative analysis because it strongly depends on operator experience. According to UNI EN 1992-1-1:2005 standard , the maximum admitted concrete crack width is 0.3 mm. For this reason, to accurately and reliably measure the target dimension, it is necessary to employ measurement instruments with suitable metrological characteristics (e.g. precision and accuracy at least one order lower than the value to be measured). Otherwise, the crack severity could be misclassified. This thesis work proposes a novel automatic image-based approach able to locate and measure cracks on concrete surfaces respecting the metrological constraint imposed by UNI EN 1992-1-1:2005 standard. Using only one image, the developed method is able to automatically and rapidly locate and measure the average width and length of a crack in an existing concrete structure. The measurement system developed exploits a single camera working in the visible range to acquire a digitized image of the structure being inspected. The software component of the system receives as input the single image framing the crack and gives as output an augmented image where the crack is highlighted as well as its average/max width and length. The measure of the crack width is performed perpendicularly to the crack central line with sub-pixel accuracy. The measurement system has been deployed on a smartphone for operator-based manual inspections as well on embedded systems for remote inspection with robots or Unmanned Aerial Vehicles (UAVs). The strategies developed can be easily extended from concrete inspection applications to any other context where a surface quality control targeted to the identification of eventual damages/defects is required. The activity was triggered by an explicit need within the EnDurCrete project.
Williams, Joshua Marc. "EVALUATION OF FATIGUE CRACK GROWTH SOFTWARE FOR USE ON CRACKS IN COMPLEX GEOMETRIES." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-104840/.
Full textSome, Liene. "Automatic image-based road crack detection methods." Thesis, KTH, Geodesi och satellitpositionering, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189245.
Full textKapanadze, David, and Bert-Wolfgang Schulze. "Pseudo-differential crack theory." Universität Potsdam, 2000. http://opus.kobv.de/ubp/volltexte/2008/2575/.
Full textHoffman, Jeffrey. "A Crack in Everything." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5305.
Full textID: 031001330; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Title from PDF title page (viewed April 8, 2013).; Thesis (M.F.A.)--University of Central Florida, 2012.; Includes bibliographical references (p. 31).
M.F.A.
Masters
Visual Arts and Design
Arts and Humanities
Emerging Media; Studio Art and the Computer
Miller, James Thomas Ph D. Massachusetts Institute of Technology. "Crack coalescence in granite." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/47771.
Full textIncludes bibliographical references.
This thesis experimentally investigates crack coalescence in prismatic Barre Granite specimens with two pre-cut, open flaws under uniaxial compression. Using a high-speed video system, crack initiation, propagation, and coalescence are observed. Flaw geometries are chosen to allow one to compare the results with those of studies in other materials as well as to better understand fracturing and coalescence processes. Specifically, the effect of ligament length (L), flaw inclination angle (p3), and bridging angle (a) on coalescence is investigated. The same crack types as in other materials are observed. Coalescence patterns observed fit into a previously developed framework (for molded gypsum and Carrara marble) with the exception of one new coalescence pattern. Crack processes and coalescence patterns suggest a more tensile behavior as grain size increases from gypsum to marble to granite. Similar to previous work in marble and granite, white patches are observed during compression tests. These white patches can be categorized as either diffuse or linear, with linear white patches further subdivided into two more types, namely boundary-following and through-going. The white patches are essentially process zones. The effect of water pressure on coalescence pattern is also investigated. Flaw water pressure is seen to affect coalescence in granite, although further work is needed.
by James Thomas Miller.
S.M.
Donohoe, C. J. "Corrosion fatigue of a high strength low alloy steel." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322985.
Full textPiyasena, Ratnamudigedara, and n/a. "Crack Spacing, Crack Width and Tension Stiffening Effect in Reinforced Concrete Beams and One-Way Slabs." Griffith University. School of Engineering, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030606.165418.
Full textPiyasena, Ratnamudigedara. "Crack Spacing, Crack Width and Tension Stiffening Effect in Reinforced Concrete Beams and One-Way Slabs." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/366060.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Engineering
Full Text
Santos, e. Lucato Sergio Luis dos. "Constraint induced crack initiation and crack growth at electrode edges in piezoelectric ceramics." Phd thesis, [S.l.] : [s.n.], 2002. http://elib.tu-darmstadt.de/diss/000191.
Full textAlencar, Rodrigo. "Porque a guerra às drogas? do crack na política ao crack do sujeito." Pontifícia Universidade Católica de São Paulo, 2012. https://tede2.pucsp.br/handle/handle/16964.
Full textConselho Nacional de Desenvolvimento Científico e Tecnológico
Drugs, albeit under other symbolic coordinates, have always been in the most varied places, societies and human groups. However, since the turn of the 19th century, drug use and trade has been object of international treaties. These agreements urge the signatory countries to take measures to control and combat drugs, through the mobilization of the military in their drug policies. As a result of this strategy, the fields of health and public safety intertwine, causing some blurring between who should be treated and who should be fought. Therefore, this work is dedicated to the task of identifying the unconscious operations at stake in the game of prohibition. We establish as object delimitation the highlight given to crack in the drug policies, since it is the most recent episode about the topic in Brazil. Based on this understanding of the theme, we draw on both the contribution of the psychoanalytical theory and its interpretations of group interaction, as well as the political resources that act to camouflage the subject s division. Thus our analysis concludes that the policies to combat crack deny the discontent in the cultural life, insofar as they present this substance as a threat to the social bond
As drogas, ainda que sob outras coordenadas simbólicas, ocuparam diversos lugares nas mais variadas sociedades e agrupamentos humanos. No entanto, desde a passagem do século XIX para o século XX, seu uso e circulação tem sido objeto de acordos internacionais. Tais acordos estabelecem aos países participantes medidas de combate e controle, aplicadas por meio da mobilização de aparatos militares em suas políticas sobre drogas. Esta mobilização opera por estratégias que entrelaçam os campos da saúde e da segurança pública, provocando certo obscurecimento entre quem deve ser tratado e quem deve ser combatido. Portanto, neste trabalho, nos lançamos à tarefa de identificar as operações inconscientes em jogo no discurso da proibição. Estabelecemos enquanto recorte de objeto o destaque dado ao crack nas políticas de atenção às drogas por o considerarmos o episódio mais recente sobre o tema no Brasil. Pautados nesta compreensão do problema, recorremos aos aportes da teoria psicanalítica e às suas interpretações sobre o funcionamento grupal, bem como aos recursos políticos que operam no escamoteamento da divisão do sujeito. Deste modo, analisamos que as políticas de combate ao crack negam o mal-estar inerente à vida cultural, recorrendo à apresentação desta substância como uma ameaça para o laço social
Stierle, Claudia. "Entscheidung zu Crack? : Eine handlungstheoretische Erklärung des Crackkonsums /." Hamburg : Kovač, 2006. http://www.verlagdrkovac.de/3-8300-2250-6.htm.
Full textRehman, Atiq-Ur. "An investigation of methods of reducing fatigue crack growth by artificial crack-closure effects." Thesis, University of Salford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315379.
Full textWan, Victor. "Fundamental modelling studies of fatigue crack nucleation & microstructurally short crack growth in superalloy." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/61023.
Full textAlvaredo, Alejandra Mónica. "Drying shrinkage and crack formation /." Zürich, 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10754.
Full textYasaee, Mehdi. "Interlaminar crack arrest in composites." Thesis, University of Bristol, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566834.
Full textSjoberg, Brian David. "Crack widths in reinforced concrete." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ38642.pdf.
Full textHodgkins, Andrew D. "Crack propagation in nuclear graphite." Thesis, University of Manchester, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488486.
Full textLi, Junhong. "Elastic - plastic interfacial crack problems." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297517.
Full textAhmad, Haider Yousif. "Fatigue crack growth at notches." Thesis, University of Sheffield, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360410.
Full textDumpleton, P. "Fatigue crack propagation in polyethylene." Thesis, Cranfield University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373987.
Full textShin, C. S. "Crack growth at stress concentrations." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355680.
Full textNakamura, Takatoshi. "Fatigue crack initiation in weldments." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/38349.
Full textIncludes bibliographical references (leaves 160-162).
by Takatoshi Nakamura.
M.S.
Ocean.E.
Zanganeh, Mohammad. "Experimental investigation of crack paths." Thesis, University of Sheffield, 2009. http://etheses.whiterose.ac.uk/14645/.
Full textButrym, Brad A. "Crack Detection in Aluminum Structures." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/32276.
Full textMaster of Science
Sheu, Yih-Chyun. "Dynamic elastic-viscoplastic crack growth /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487587604133479.
Full textAbrahams, Ayesha. "The Crack in the Mountain." Master's thesis, Faculty of Humanities, 2020. http://hdl.handle.net/11427/32437.
Full textMohammed, Ilyas. "Crack nucleation from bimaterial corners /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
Full textXu, Linlin 1963. "Stress singularities at crack corners." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/291540.
Full textGualandi, Gabriele. "Crack modeling and crack propagation in structures using damage model and extended finite element techniques." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3931/.
Full textLe, Page Brian Hamilton. "The assessment and behaviour of crack bridging and crack accommodating protective coatings on reinforced concrete." Thesis, University of Surrey, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244776.
Full textMcMaster, Fraser J. "The effects of load interaction on fatigue crack growth and crack closure in aluminium alloys." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297844.
Full textPowell, Dawn Louise. "Maternal attitude towards unborn child in crack cocaine using and non-crack cocaine using mothers." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 1994. http://digitalcommons.auctr.edu/dissertations/2578.
Full textLoureiro-Homs, Jordi. "Modelling of TMF Crack Growth in Polycrystalline Gas Turbine Alloys : Accounting for Crack Closure Effects." Licentiate thesis, Linköpings universitet, Mekanik och hållfasthetslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-170275.
Full textHuvudsyftet med arbetet som presenteras i denna licentiat avhandling är att undersöka och modellera utmattnings sprickväxtbeteendet hos den nickelbaserade superlegeringen Inconel 792, med särskild uppmärksamhet riktad mot liuslängsdmodellering av högtemperaturkomponenter i en industriell kontext. I-fas (IP) sprickväxtprov har utförts vid olika temperaturer och belastningsregimer, inklusive hålltider. Observationerna från dessa tester har legat till grund för hypoteser för att förklara spricktillväxtbeteende, vilka successivt har verifierats experimentellt och numeriskt. Mest framträdande har det observerats att sprickslutning har en väsentlig inverkan på sprickväxten, och kan i stor utsträckning förklara sprickväxten för detta material under studerade förhållanden. Detta fenomen har observerats experimentellt och modellerats numeriskt för att förbättra metodens precision.
Ytterligare forskningsfinansiär: Siemens Energy through "Turbines for Future Energy Systems" (Turbiner forframtidens energisystem), Grant No.44100-1
WATANABE, Katsuhiko, Hideyuki AZEGAMI, and Yasuo HIRANO. "An Evaluation of the Fracture Resistance of a Stably Growing Crack by Crack Energy Density (2nd Report, Application to a Ductile Crack in Thin Plate)." 日本機械学会, 1986. http://hdl.handle.net/2237/12160.
Full textDeogekar, Sai Sharad. "A Computational Study of Dynamic Brittle Fracture Using the Phase-Field Method." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439455086.
Full textKim, Dong Sub. "Analysis of fatigue crack propagation behavior of a surface crack at fillet toe of tubular joints /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487668215808373.
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