Дисертації з теми "Cracking intensity"
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Sun, Xiaodan. "Residual stresses, cracking and stress intensity factors for Vickers indentations in ceramics." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:71f1d3ed-8163-4487-a81e-df09d50710ed.
Повний текст джерелаHassan, Tasnim. "NUMERICAL STUDY OF TRANSIENT RESPONSE OF AN INTERFACE-CRACK IN A TWO LAYERED PLATE (ANTI-PLANE, STRESS INTENSITY FACTOR)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275474.
Повний текст джерелаMiller, Douglas Dwight. "Stress intensity factors for circumferential part-through cracks from holes in hollow cylinders subjected to tension and bending loads." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16055.
Повний текст джерелаPierola, Javier. "Three dimensional stress intensity factor for large arrays of radial internal surface cracks in a cylindrical pressure vessel." FIU Digital Commons, 1993. http://digitalcommons.fiu.edu/etd/2514.
Повний текст джерелаRhymer, Donald William. "Stress Intensity Solutions of Thermally Induced Cracks in a Combustor Liner Hot Spot Using Finite Element Analysis." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7515.
Повний текст джерелаMariano, Neide Aparecida. "Corrosão sob tensão de um aço inoxidável austenítico em soluções aquosas contendo cloretos." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/18/18136/tde-03102017-142025/.
Повний текст джерелаThe present work studies the stress corrosion cracking behavior in austenitic Fe-Cr-Mn-N stainless steel, in as received, solubilized and sensitized conditions, when submited to several chlorides environments. To evalued the stress corrosion cracking susceptibility, DCB (\"Double Cantilcver Beam\") and C(T) (\"Compact- Tension\") specimens, fatigue precracked, side grooved and wedge loaded were used. The environments employed were boiling solution of 45 wt% of MgCl2 at 154ºC, synthetic sea water at room and 100°C temperatures, and a solution with 3,5 wt% of NaCI at room temperature. The susceptibility to stress corrosion cracking has been evaluated in terms of the threshold stress intensity factor, KISCC, and the fracture surface appearance of those specimens whose the crack propagation took place was characterized. The results showed that only the specimens in the as received and sensitized conditions, were suceptible to the stress corrosion cracking effect in the solution with 45 wt% of MgCl2 at the boilling temperature. Also, it has been verified the electrochemical behavior of this steel when submited in the above environments. The results of polarization curves showed that the material presents low corrosion strength, mainly in MgCl2 environments.
Lados, Diana Aida. "Fatigue crack growth mechanisms in Al-Si-Mg alloys." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0204104-125758.
Повний текст джерелаKeywords: Microstructure; Elastic-Plastic Fracture Mechanics; Crack closure; A356; J-integral; Conventionally cast and SSM Al-Si-Mg alloys; Residual stress; Heat treatment; Fatigue crack growth mechanisms; Threshold stress intensity factor; Plastic zone; Paris law; Fracture toughness; Roughness. Includes bibliographical references.
Roux-Langlois, Clément. "Simulation de fissures courbes en trois dimensions avec extraction directe des facteurs d'intensité des contraintes : En vue de l'identification de lois de propagation de fatigue." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0112/document.
Повний текст джерелаIt is necessary to understand the behavior of structures up to their failure to enhance their design. The mechanisms and phenomena undergoing failure vary according to the considered material and boundary conditions. We consider homogeneous materials for which cracks propagate in a context where behavior nonlinearities are not dominants. These conditions are matched for brittle and quasi-brittle materials and for some fatigue cracks. For the former, the main source of dissipation is the crack propagation which can be seen as the generation of a new free-surface. For the later, there is many applications where, in one loading cycle, the nonlinearities remains confined around the crack tip. The linear elastic fracture mechanics theory is then a pertinent model to approximate the structure behavior. Under such hypotheses, a singularity appears in the crack tip vicinity. The Williams' series expansion is computed from the asymptotic study of plane and anti-plane states. The stress is singular at the crack tip and the order of this singularity is one out of two. The singularity amplitude is quantified by the stress intensity factors (SIF), one for each of the three loading modes. In 3D, the crack shape is potentially complex (front curvature and non-planar crack), and no general asymptotic series expansion exists. In this PhD thesis, the 2D Williams' series in displacements are used and regularized with a finite element evolution along the front. From this 3D definition of the asymptotic fields in the crack tip vicinity, a numerical method for direct estimation of the SIF (DEK-FEM) is extended to 3D. This method is based on domain decomposition, the two domains are bounded in a weak sense on their interface. In the crack tip vicinity, the mechanical fields are approximated by a truncation of the asymptotic series expansion. Therefore, appropriate fields are used to deal with the singularity, and the associated degrees of freedom are directly the asymptotic coefficients. Among these coefficients are the SIF and the T-stresses. To bridge the scales between the structure and the crack front singularity and to increase the numerical efficiency, this method is embedded in a localized X-FEM multigrids approach. The proposed method is shown to provide an accurate evaluation of the SIF and T-stresses evolution. This approach has been developed in combination of an experimental post-processing method (full field displacement measurement through image correlation) based on the same asymptotic series expansion. The 3D images can be obtained for in situ fatigue experiments by X-ray microtomography and reconstruction. The crack geometry and the SIF are then provided by image correlation and regularization based on Williams series expansion. These data can be used for identifying a 3D fatigue crack growth law. The efficiency of the method is illustrated in 2D
Zeghloul, Abderrahim. "Comparaison de la propagation en fatigue des fissures courtes et des fissures longues." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37619253w.
Повний текст джерелаBrundin, Carl. "Alternative energy concepts for Swedish wastewater treatment plants to meet demands of a sustainable society." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-146831.
Повний текст джерелаPietranico, Sylvain. "Analyse de matériaux pour la modélisation des mécanismes de défaillance dans les modules électroniques de puissance." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2010. http://tel.archives-ouvertes.fr/tel-00543040.
Повний текст джерелаYu, Yu-Chuan, and 游友娟. "Prediction of reflective cracking with stress intensity factor." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/97489657865762351867.
Повний текст джерела國立成功大學
土木工程學系碩博士班
93
Reflective cracking is a common type of distress that occurs on composite AC/PCC pavement. Two main ways to analyze reflective cracking were developed. One is getting the relationship between fatigue life and failure by applying cyclic loading on asphalt beam in laboratory, the other is to research the tendency of cracking by computer simulation. It is not only microcosmic and accurate, but also quantifying the damage from traffic loading and temperature loading if analysis base on fracture mechanics. Cracking growth speed (failure potential) is predicted by stress intensity factor and Paris’ Law. Also, Use S-N curve to predict fatigue life of glassgrid. The first finding in this research is that the glassgrid does not delay happening of cracking, but it is effective on extending life of the system in the process of crack propagation because of its tensile strength. The result indicated that an increase in the stiffness of the geogrid is not related well to the fatigue life. The reinforcement effect was more pronounced for weaker subgrade foundation.
Tsai, Fang-Ling. "Prediction of Reflection Cracking in Hot Mix Asphalt Overlays." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8900.
Повний текст джерелаSUNDARAMOORTHY, RAVI KUMAR. "INITIATION OF DELAYED HYDRIDE CRACKING IN Zr-2.5Nb MICRO PRESSURE TUBES." Thesis, 2009. http://hdl.handle.net/1974/1797.
Повний текст джерелаThesis (Master, Mechanical and Materials Engineering) -- Queen's University, 2009-04-24 12:55:36.917
Soltani, Amin. "Mechanical behavior of tire rubber–reinforced expansive soils." Thesis, 2018. http://hdl.handle.net/2440/118009.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Civil, Environmental and Mining Engineering, 2018
Sahoo, Anup Kumar. "MODELS FOR ASSESSMENT OF FLAWS IN PRESSURE TUBES OF CANDU REACTORS." Thesis, 2009. http://hdl.handle.net/10012/4329.
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