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.
Results
Showing 1 to 12 of 12 for “"Thermal failure"”.
-
Zirconium alloy getter bed air-ingress thermal failure analysis
… within the bed to extremely high levels. This failure mode, which could be caused by a line rupture, was modeled, analyzed, and a full-scale experiment was performed in the Tritium Science and Engineering group at Los Alamos National Laboratory to confirm the results that the primary bed …
-
Design Automation for Reliable CMOS Chip Input/output Circuits
Thermal failure is one of the most prevalent failure mechanism during the Human Body Model (HBM) ESD stress. Previous circuit thermal model (integrator circuit) in iETSIM only applies for constant current stress. A general thermal model using convolution is developed. New techniques are proposed to …
-
Thermisches Versagen von Reaktordruckbehältern bei extremen Störfällen in Druckwasserreaktoren : Analyse und Verbesserungsvorschläge
… in the reference case up to the point that thermal failure would occur.Due to the high uncertainty involved in the complex accident sequence, several analyses beyond reference case calculation were conducted in order to determine the impact of changes in vital parameters up until the …
-
Finite element analysis of combined fracture and delamination on coated substrate under normal and tangential loading
… provide substrate protection from mechanical and thermal failure. Coating is subjected to contact loading of normal and tangential loading, originated from contact pressure and sliding contact. In this thesis, aeroengine brittle material has been modelled to simulate coating failure under combined …
-
Turbulence modeling for film cooling flows
… to effectively protect turbine blades from thermal failure and thereby to allow higher inlet temperatures in order to increase the efficiency of gas turbine engines. Film cooling involves the injection of rows of coolant jets from slots on the surface of a turbine blade which is then bent …
-
Application and development of finite element techniques for transducer design and analysis
… of the following: (a) cavitation, (b) electrical failure, (c) mechanical failure, (d) thermal failure. Power limitations arising from (a) or (b) can be determined from empirical data, whilst those arising from (c) or (d) are best determined using numerical methods. FE software is readily …
-
On the Thermally Induced Failure of Rolling Element Bearings
… dissertation is devoted to the investigation of thermally induced seizure of rolling element bearings. A comprehensive thermal model of the rolling element bearings is developed which can predict the operating temperature of the bearing components in a wide range of operating conditions. The …
-
Stochastic Models of Surface Limited Electronic and Heat Transport in Metal and Semiconductor Contacts, Wires, and Sheets---Micro to Nano
… roughness in coupled mechanical, electronic and thermal processes in N/MEMS and semiconductor devices in the 10 nm - 1 mum range. A model is presented to estimate roughness rms Delta and autocorrelation L from experimental surfaces and edges, and subsequently generate statistical series of rough …
-
Stochastic Models of Surface Limited Electronic and Heat Transport in Metal and Semiconductor Contacts, Wires, and Sheets — Micro to Nano
… roughness in coupled mechanical, electronic and thermal processes in N/MEMS and semiconductor devices in the 10 nm - 1 m range. A model is presented to estimate roughness rms and autocorrelation L from experimental surfaces and edges, and subsequently generate statistical series of rough …
-
Two-dimensional quench propagation model for a three-dimensional "high-temperature" superconducting coil
Quenching is a thermal failure mechanism encountered with superconducting magnets. When a section of conductor is driven normal by an external heat input, the magnet transport current flows through a resistance, causing joule dissipation. If heat is not conducted away from the normal region faster …
-
Study of photovoltaic (PV) module interconnections failure analysis and reliability
… part of the PV module assembly, and its failure can adversely affect the performance and reliability of the PV module. The interconnection failure has been mostly linked to the crack initiation and propagation in the solder joints used to connect the ribbon interconnection to the cell. …
-
Large Eddy Simulations of Flow and Heat Transfer in the Developing and 180° Bend Regions of Ribbed Gas Turbine Blade Internal Cooling Ducts with Rotation - Effect of Coriolis and Centrifugal Buoyancy Forces
… but it also increases the likelihood of thermal failure. Internal passages with tiny ribs are typically cast into turbine blades to cool them, and the ability to accurately predict the flow and heat transfer within these channels leads to higher design reliability and prevention of blade …