Dissertations / Theses on the topic 'Cracks'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Cracks.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
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 textHolland, Dominic John Martin. "Cracks and atoms /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
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 textLawson, Sean. "The Prevalence of Intrapulpal Cracks in 1st and 2nd Mandibular Molars Requiring Non-Surgical Root Canal Treatment." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/3410.
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 textMyers, Carol A. "Falling through the cracks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1995. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq23766.pdf.
Full textBernstorff, Karin Nislev. "Listening through the cracks." Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/14706.
Full textWilliams, 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 textHannes, Dave. "Growth of cracks at rolling contact fatigue." Thesis, KTH, Hållfasthetslära (Avd.), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-33659.
Full textUtmattning med rullande kontakter är ett ofta förekommande problem för många maskinelement. I den aktuella rapporten utfördes en numerisk studieför att förutsäga sprickvägen hos utmattningssprickor som initierats i ytan vidrullande kontakter. Implementeringen av kontaktproblemet bygger på asperitpunktlastmekanismen för rullande kontakter. Studien av kontaktproblemetär tillämpad till kugghjul. Olika belastningstyper och modeller studeradesoch jämfördes med profilen hos en experimentell spall. Bra överensstämmelseobserverades för korta spricklängder när en modell med fördelad belastninganvänds för en belastningstyp där en normalbelastning agerar på asperiten ochvid cylindriska kontakten och en tangentialbelastning införs på asperiten. Olikakriterier för spricktillväxt implementerades för att verifiera giltigheten av antagandetatt mode I spricktillväxt är dominant. Några generella kännetecken avutmattningssprickor med rullande kontakter framhävdes. En kvantitativ parameterstudie för den implementerade modellen utfördes.
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 textNikolic, Mijo. "Rock mechanics, failure phenomena with pre-existing cracks and internal fluid flow through cracks." Thesis, Cachan, Ecole normale supérieure, 2015. http://www.theses.fr/2015DENS0043/document.
Full textThis thesis deals with the problem of localized failure in rocks, which occurs often in civil engineering practice like in dam failure, foundation collapse, stability of excavaations, slopes and tunnels, landslides and rock falls. The risk of localized failure should be better understood in order to be prevented. The localized failure in rocks is usually characterized by a sudden and brittle failure without warning in a sense of larger and visible deformations prior to failure. This happens also under the strong influence of material heterogeneities, preexisting cracks and other defects.The three novel numerical models, incorporating the localized failure mechanisms, heterogeneity of rock and preexisting cracks and other defects, are presented in this thesis. First model deals with 2D plane strain two-phase rock composite, where stronger phase represents the intact rock and weaker phase initial defects. Second model represents the extension of the previous model towards the 3D space, where full set of 3D failure mechanisms is considered. Heterogeneous properties are taken here through the random distribution and Gauss statistical variation of material properties. The latter model is also used for the analysis of intact rock core specimens geometrical shape deviations influencing the uni-axial compressive strength. Third model is a 2D, dealing with volumetric fluid-structure interaction and localized failure under the influence of fluid flow throughthe porous rock medium.The discrete beam lattice approach is chosen for general framework for three models, where Voronoi cells represent the rock grains kept together by Timoshenko beams as cohesive links. The enhanced kinematics characterized for embedded discontinuity approach is added upon standard kinematics of cohesive links. This serves for the macro crack propagation in all failure modes and their combinations, between the rock grains. The fracture process zone formation followed by micro-cracks coalescence, preceding the localized failure, is considered as well. Fluid flow is governed by a Darcy law, while coupling conditions obey Biot's theory of poroplasticity. The results of the numerical models were verified by the benchmarks available from literature in 2D case. The 3D model was validated against the experimental results conducted on 90 rock specimens, where even slight geometrical deviations of specimens are considered.Presentation of these models, as well as their implementation aspects are given in full detail. Embedded discontinuity concept and the local nature of enhancements required to capture the displacement discontinuities leads to the very efficient approach with static condensation of enhanced degrees of freedom and technique that can be efficiently incorporated into finite element code architecture
Patel, Surendra Kumar. "Experimental And Numerical Studies On Fatigue Crack Growth Of Single And Interacting Multiple Surface Cracks." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/276.
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 textKhushefati, Waleed Hassan Ahmed. "Healing of cracks in concrete." Thesis, Imperial College London, 2004. http://hdl.handle.net/10044/1/7201.
Full textHarrison, David John. "Eddy-current imaging of cracks." Thesis, University of Surrey, 1985. http://epubs.surrey.ac.uk/847494/.
Full textRomero, Victor. "Spiraling Cracks in Thin Sheets." Paris 6, 2010. http://www.theses.fr/2010PA066660.
Full textWang, Lehua. "Elastoplastic analyses of multiple cracks in thin sheets, and of elliptical cracks in 3D bodies." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/11781.
Full textMohammad, Noor. "Desiccation Cracking Behaviour in Thin Bentonite Layers." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/22231.
Full textMürk, Annely. "Optimization of inelastic plates with cracks /." Online version, 2006. http://dspace.utlib.ee/dspace/bitstream/10062/1226/5/murkannely.pdf.
Full textBroman, Elisabeth. "Cracks in the Spirit of Community." Licentiate thesis, KTH, Industrial Economics and Management, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1781.
Full textCracks in the Spirit of Community is a study of a Swedishtrade union in a period of change. Increasingly, traditionaltrade unions´ work based on collective solutions has comeinto question, and the customer perspective of trade unionactivities is becoming more prominent. At the same time, ageneration of mainstay trade union supporters at ourcountry´s workplaces are approaching retirement age. Howdo these - now ageing - children of Sweden´s"people´s home" hand over our society´s institutionsand pass on its traditions to a new generation? Is there a riskthat knowledge will be lost? And is anyone in the newgeneration ready to receive this knowledge?
A systematic and structured dialogue with participants fromSif, Sweden´s leading white collar union, helped developthis complex of problems. The work focused on the interactionbetween people to build up a community of understanding, whichwas at the core of earlier trade union tradition. Broadeningthe present pattern of action allows more long-term trends tobe traced. A disregard for matters of common concern, andunstated dissension, cause cracks in the spirit of community,cracks that undermine the power of collective action inpolitical matters. This dissertation poses complex questionsabout democracy, participation and common responsibility.
The case study was carried out as a series of dialogueseminars with a carefully-selected group of people from Sif.The dialogue seminar method was developed to bring to the foretacit knowledge in skills research. By focussing onvalue-based, shared human knowledge, the dissertation puts tothe test a new application of the dialogue seminar method. Thisstudy illustrates a shift from common interests to individualinterests. It points out general trends in the development ofour society - a trade union member, an employee and a citizenis often one and the same person.
Schulze, Bert-Wolfgang, Alexander Shlapunov, and Nikolai Tarkhanov. "Green integrals on manifolds with cracks." Universität Potsdam, 2000. http://opus.kobv.de/ubp/volltexte/2008/2577/.
Full textMohamed, Alhade Abdossllam. "Monitoring cracks in a rotating shaft." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=186894.
Full textStoll, Anke. "Mechanical analysis of environmentally assisted cracks." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542978.
Full textAlizadeh, Hassan. "Closure of three-dimensional fatigue cracks." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425128.
Full textDowell, John P. "Thermal Cracks in Diesel Engine Crankshafts." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1093747466.
Full textShawkat, Salman, and Ragheed Hussain. "Concrete Cracks in Swimming Pool Basins." Thesis, KTH, Byggnadsteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208349.
Full textNeris projektet
Karlsson, David. "Analysis of Three-Dimensional Cracks in Submodels." Thesis, Linköping University, Department of Management and Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8105.
Full textA common technique to evaluate load paths in complex structures is to perform FE-calculations with relative large elements. This procedure gives no information regarding stress concentrations at e.g. holes or radius but this phenomenon can later on be investigated in details with local individual submodels. Displacements is taken from the global model and used to analyse stress concentrations and crack driving parameters in the submodel.
Today, the crack controlling stress intensity factors are in general cases obtained from handbook solutions of elementary cases. This method requires engineering judgements in a conservative manner and one way to improve the solution is to model the crack in its correct surroundings in a local three-dimensional submodel.
This master thesis is focused on the development of an automated support for analysing three-dimensional cracks in submodels. The results from a global Nastran model can be imported to Trinitas and used for a more accurate stress and fatigue life analysis in a local model. Here a three-dimensional crack tip subdomain can be generated inside an eight point brick volume. The crack tip subdomain is specially designed and adjusted for accurate determination of stress intensity factors along the crack front. For example, all points are adjusted with respect to the brick volume and the crack size, triangular wedge elements are applied around the crack tip, the midpoints for these elements are moved to quarter points and the crack front is curved. The crack tip subdomain is validated against several reference cases and shows sufficiently good results with respect to the stress intensity factor.
Finally, the automated crack tip subdomain generation is applied to a geometrically complex part of a main wing carry-through bulkhead of a fighter aircraft in order to show the applicability of the procedure in an industrial environment.
Moro, Nicole M. "Skipping the cracks a history in poetry /." Diss., Online access via UMI:, 2005.
Find full textSteadman, David Lawrence. "Growth-arrest behavior of small fatigue cracks." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/11731.
Full textXue, Yibin. "Three dimensional interface cracks in anisotropic bimaterials." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/17273.
Full textvon, Aulock Felix W. "Bubbles, Crystals and Cracks in Cooling Magma." Thesis, University of Canterbury. Geological Sciences, 2013. http://hdl.handle.net/10092/7880.
Full textMathieson, P. A. R. "Acoustic emissions from fatigue cracks in steels." Thesis, Cranfield University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379486.
Full textZywicz, Edward. "On elastic-plastic cracks between dissimilar media." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/14401.
Full textAtique, Alvis. "Investigation of desiccation cracks in drying soil." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=20835.
Full textAbdul, Manan Muhamad Saifuildin. "Fracture mechanics analysis of multiple edge cracks." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/1444086/.
Full textEriksson, Linus. "Detection of facade cracks using deep learning." Thesis, Mittuniversitetet, Institutionen för elektronikkonstruktion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-39598.
Full textIyyer, Nagaraja S. "Closure of fatigue cracks at high strains." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/91124.
Full textM.S.
Lee, Shi-Wei. "Analysis of Composite Laminates with Matrix Cracks." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/45539.
Full textMaster of Science
Iyyer, Nagaraja S. "Fatigue growth and closure of short cracks." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/52324.
Full textPh. D.
karashi, husain. "The Prevalence, Predictive Factors, and Classification of Intrapulpal Cracks in Maxillary Molars Requiring Endodontic Treatment." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4755.
Full textElgazzar, Hesham, and Viktor Ansnaes. "Concrete Cracks in Composite Bridges : A Case Study of the Bothnia Line Railway Bridge over Ångermanälven." Thesis, KTH, Bro- och stålbyggnad, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-100831.
Full textPotirniche, Gabriel Petru. "FINITE ELEMENT MODELING OF CRACK TIP PLASTIC ANISOTROPY WITH APPLICATION TO SMALL FATIGUE CRACKS AND TEXTURED ALUMINUM ALLOYS." MSSTATE, 2003. http://sun.library.msstate.edu/ETD-db/theses/available/etd-06242003-220551/.
Full textRahman, Md Moshiur. "Experimental and theoretical study of the stress and strain fields around fatigue cracks and plasticity-induced crack closure." Thesis, Open University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446310.
Full textJassal, Kulbir Singh. "Development of potholes from cracks in flexible pavements." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ39100.pdf.
Full textGarces, Rodriguez Olga. "Influence of cracks on chloride ingress into concrete." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62948.pdf.
Full textCook, Daniel Adam. "Monitoring small fatigue cracks using ultrasonic surface waves." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17381.
Full textAraujo, Jose Alexander. "On the initiation and arrest fretting fatigue cracks." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342243.
Full textLang, Christopher Leslie. "Composite patching of fatigue cracks in steel structures." Thesis, Heriot-Watt University, 2008. http://hdl.handle.net/10399/2041.
Full textLynch, Michael Anthony. "Limit loads of piping branch junctions with cracks." Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399152.
Full text