Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"Temperature creep"”.
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The Analysis of High Temperature Creep in Shallow Domes
Made available in DSpace on 2014-12-05T17:37:13Z (GMT). No. of bitstreams: 1 6100123.pdf: 2282374 bytes, checksum: 78b5b06886f2f4ef6dabcf0e119450f7 (MD5) Previous issue date: 1960
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High temperature creep behavior of Inconel 617 and Haynes 230
The high temperature gas-cooled reactor (HTGR) has been selected for the Next Generation Nuclear Plant (NGNP) project. The structural materials of HTGR will serve in the temperature range of 760-950oC and withstand coolant pressure up to 7 MPa for a design life of 60 years. Currently, Ni-based …
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High temperature creep-fatigue behavior of alloy 617 and alloy 230
The Very High Temperature Reactor (VHTR) is one of the Gen-IV reactor design concepts which embody a common goal of providing safe, longer lasting, proliferation-resistant, and economically viable nuclear energy. One of the biggest challenges in the research and development of Gen-IV reactor …
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Physical simulation of high temperature creep in systems with dynamic concentration gradients
Includes bibliographical references (pages 155-165).
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Characterization of high temperature creep in siliconized silicon carbide using ultrasonic techniques
… containing various degrees of damage due to high temperature creep. These results were compared with parameters associated with creep damage such as strain and cavity formation, in order to better understand the mechanisms of creep in Si/SiC and to determine if ultrasonics can be used in …
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High Temperature Creep-Fatigue Behavior of Alloy 709 Austenitic Stainless Steel in Sodium-Cooled Fast Reactors.
North Carolina State University Theses Nuclear Engineering.
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Elevated Temperature Creep Torsion of Circular Bars and Creep Collapse Ofeccentrically Loaded Columns Made of Metals
Made available in DSpace on 2014-12-10T17:25:22Z (GMT). No. of bitstreams: 1 6406018.pdf: 3486341 bytes, checksum: 4faa6402ee6c4b02815893e9d319b689 (MD5) Previous issue date: 1963
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Influence of High Temperature Creep upon the Structure of ß-NiAl and ß-NiAl(Fe) Single Crystals
… quantitatively the influence of high temperature creep upon the structure of ß-NiAl and ß-NiAl(Fe) single crystals. A non-destructive procedure is established following the classic line of X-ray structure analysis, namely controlling the chemical composition with the electron probe …
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An investigation into the mechanisms of cone bore growth in railroad bearings
… of retained austenite to bainite, and (3) low temperature creep have been conducted. Both carburized and uncarburized 4320 steels were tested. The retained austenite contents (A$\sb{\rm ret}$) of the two carburized steels were 35% and 14%.
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Effect of Porosity on the Creep Rupture Behavior of Low Alloy Steel Weldments.
… a study of the effects of porosity on the high temperature creep characteristics of low-alloy steel weldments. The material selected for investigation was ASTM A387-D, a 2-1/4% Chromium - 1% 15 Molybdenum low-alloy steel. This material is used in the fabrication of nuclear and petro-chemical …
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Calibration of empirical, semi-empirical, and physics-based material models for the prediction of creep and tensile behaviour of Alloy 617
… examines their application in predicting the creep and tensile behaviour of Alloy 617 across three studies of increasing model fidelity. The first study calibrates twelve empirical models and applies symbolic regression (SR) to discover constitutive expressions for elevated-temperature creep …
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A phase field model for the gallium permeation of aluminum grain boundaries
… toughness, corrosion susceptibility and high temperature creep are influenced by grain boundary physics. The structure of grain boundaries affects their properties. In this thesis, we have developed a predictive model for a particular grain boundary structure-property relationship: the …
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Degradation and Failure Analysis of Environmental Barrier Coatings under Adverse Operating Environment: Multi-Physics Modelling
… and water-vapor-induced degradation under high-temperature operating conditions. The premature failure of EBCs, particularly delamination along the interfaces of thermally grown oxide (TGO) poses major challenges to coating reliability. This research presents a systematic study of the …
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Adhesive bonding of stainless steel : strength and durability
… used in the tests, which were conducted at room temperature. The final stage of the experimental work was concentrated on the room temperature creep and dynamic fatigue performance of adhesive joints. Throughout the course of study a number of different surface analytical techniques were employed …
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Adhesive bonding of stainless steel :Sstrength and durability.
… used in the tests, which were conducted at room temperature. The final stage of the experimental work was concentrated on the room temperature creep and dynamic fatigue performance of adhesive joints. Throughout the course of study a number of different surface analytical techniques were employed …
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High energy x-ray diffraction microstructural analysis of oxide dispersion strengthened steel for advanced nuclear systems
… exceptional radiation resistance and high-temperature creep strength when compared to traditional ferritic and martensitic steels. ODS steel has been considered one of most promising structural materials for advanced nuclear systems. In this study, we applied the high-energy synchrotron …
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Thermo-mechanical model of steel shell behavior in continuous slab casting
… from a separate fluid flow model. The high temperature creep and plasticity of the steel is incorporated through a unified constitutive law defining the inelastic strain rates as a function of temperature, composition, accumulated plastic strain and the stress state. The model has been …
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Thermal and Thermo-Mechanical Analyses of Wire Bond vs. Three-dimensionally Packaged Power Electronics Modules
… results show a significantly lower junction temperature of 17oC in the MPIPPS module than that in the wire bond module, due to the more uniform heat flow distribution in the MPIPPS module. The top DBC (direct bonded copper) substrate in the MPIPPS module helps direct the excessive heat …
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