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 15 of 15 for “"transient heating"”.
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Co-Assembly Of Nanostructured Hybrid Materials For Energy Applications
… co-assembly is coupled with conventional heating (102-105 s) to generate hybrid materials for solid-state hybrid solar cells. A polyisoprene-block-polystyrene-block-polyethylene oxide (PI-b-PS-b-PEO) triblock terpolymer was employed to structure-direct alumina sol to form mesoporous block …
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Inverter Dynamic Electro-Thermal Simulation with Experimental Verification
… of the three-phase inverter. In addition, transient heating of a single IGBT in the six-pack module is modeled and validated, yielding good agreement.
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Plonasluoksnių saulės elementų apdirbimas ultratrumpais lazerių impulsais /
… laser energy was transformed to localized transient heating inside the structure. Selectiveness of the ablation process was defined by optical and mechanical properties of the materials, and selection of the laser wavelength facilitated control of the structuring process. The 1064 nm …
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Post-fire Mechanical Properties of Aluminum Alloys and Aluminum Welds
… alloys. Post-fire exposure is considered heating the material to a particular temperature then cooling the material back to room temperature. The research included evaluating parent materials as well as welded samples. Post-fire mechanical properties of parent materials were evaluated at …
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Spectroscopic studies of field-induced electron emission from isolated microstructures
… sample handling and manipulation and a specimen heating stage. Details are given of a comprehensive study into the effects of sample heating on the emission process under conditions of both bulk and transient heating. Similar studies were also performed under conditions of both zero and high …
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Improvements on performance of a heat pump water heater system
… model has been developed to simulate the transient heating-up performance of the HPWH system with the validation by experimental data.
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Investigation and Characterization of the Optical, Thermal, and Adsorption Properties of Carbon Aerogels for CO2 Capture Applications
… a xenon arc lamp (1 Sun irradiance) quantified transient heating and cooling. Dynamic breakthrough experiments with a 11% CO₂ / 89% N₂ mixture at 25 °C, followed by photothermal desorption at 110 °C, were performed to determine CO₂ capacity and regeneration performance. Optical measurements …
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Visualisation of dynamic flow processes using a novel pulsed multi-element hot-wire anemometer.
… previous pulsed anemometers which have separate heating and sensing wires, the methods described here utilise a single wire as both heater and sensor. Therefore it overcomes some of the restrictions which apply to existing PWAs. It is shown that the transient heating and cooling characteristics …
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Pool boiling - growth of single bubbles at a heated wall
… cine photography whilst simultaneously recording transient wall temperatures at the bubble base with an array of miniature germanium resistance thermometers. The experimental results provide comprehensive growth data of bubbles in a known, non-uniform thermal environment for a wide range of …
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Multiscale analysis of localized, nonlinear, three-dimensional thermo-structural effects
… with structures subjected to sharp, local heating effects. Problems of this nature are prevalent in diverse engineering applications such as structural analysis of hypersonic flight vehicles in extreme environments, computational modeling of weld processes, and development of semiconductor …
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Dynamics of Energy Carriers in Solids During Interaction with Ultrafast Laser Pulses
… the dynamics of energy carriers, which excites a transient response of the material by a short laser pulse and detects the response by optical observables such as reflectance and transmittance. This technique allows observation of the optical response, which is closely related to the dynamics of …
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Modeling of carbonization and stalling during radiofrequency ablation and electrosurgery
… fluids, producing localized resistive heating. Depending on the applied waveform, duty cycle, and exposure duration, this heating can vaporize, coagulate, or denature tissue, enabling dissection, vessel sealing, or tumor ablation with high spatial precision. RF ablation typically …
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Prediction and mitigation strategies for the transient thermal performance of low thermal resistance microchannel evaporators
… flow boiling performance, the typically highly transient operation of these microelectronic devices leads to unsteady spikes in heat flux and, subsequently, in device temperatures and may potentially exacerbate flow instabilities present at steady state. The low thermal capacitance of the …
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Thermo-elastic-plastic analysis for elastic component under high temperature fatigue crack growth rate.
… fatigue simulation. Case study two estimates the transient thermal stresses superimposed on cyclic mechanical loading results in hollow cylinder under thermal shock in heating case and down shock cooling case. The combination of stress and strain intensity factor theoretical calculations with the …
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A Detailed Treatment of the Measurement of Transport Coefficients in Transient Grating Experiments
… the measurement of transport coefficients in transient grating experiments and is organized into 3 parts. Part 1 provides a brief review of the thermodynamic-phenomenological theory relevant for a correct description of the Soret effect. It comprises the formulation of the first law in open …