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 13 of 13 for “"thermal measurement"”.
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The design and thermal measurement of III-V integrated micro-coolers for thermal management of microwave devices
… for example the planar Gunn diode, standard thermal management may no longer be sufficient to effectively remove the increasing dissipated power. The work has looked at the design and development of an active micro-cooler, which could be fully integrated with the planar Gunn diode at wafer …
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Thermal characterisation of miniature hotplates used in gas sensing technology
… and reliability of these devices. Hence, thermal measurement is crucial including accurate maximum operating temperature measurements to ensure optimum reliability and good electrical performance. In the research presented in this thesis, the high temperature thermal characterisation of …
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Prediction of the power losses of PWM inverter drives for permanent magnet synchronous motors
… experimentally using both electrical power measurement and thermal measurement.
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Thermal Characterization of Graphitic Carbon Foams for Use in Thermal Storage Applications
… foams are currently being studied for use as thermal conductivity enhancers (TCEs) in thermal energy storage (TES) systems. TES systems store energy using the latent heat capacity of phase change materials (PCMs). Due to the low thermal conductivity of most PCMs, TCEs are necessary to evenly …
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High Temperature SiC Embedded Chip Module (ECM) with Double-sided Metallization Structure
… layers and material CTE match in the structure. Thermal and thermo-mechanical analysis on an ECM is then used to demonstrate the benefits on the cooling system, and to study the material and structure for reducing the thermally induced mechanical stress. In the thermal analysis, the high …
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Development and evaluation of a thermal model for haptic interfaces
The thermal interaction between the skin and an object is influenced by the thermal properties and initial temperatures of the skin and object, and by the contact force and surface roughness of the contact surfaces. This thermal interaction is modeled in this research which characterizes the …
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Thermoelectric characterization of one- and two- dimensional materials
… (S), electrical conductivity (σ), and thermal conductivity (κ) as zT=S2σT/κ. Low dimensional materials like nanowires (1D) or atomically thin films (2D) are promising as they exhibit lower thermal conductivities or higher power factors (S2σ) compared to their bulk (3D) counterparts. The …
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Computational and Experimental Modeling of the Bioheat Transfer Process of Perfusion in Tissue Applied to Burn Wounds
… routine using surface temperature and heat flux measurements to estimate blood perfusion and thermal resistance in living tissue. Dynamic thermal measurements collected at the surface of the sensor before and after imposing a dynamic thermal cooling event are used with the model to estimate the …
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The identification and modelling of the dominant failure mode in hot forging tooling
… analysis, metrology, metallurgical analysis and thermal measurement. The dominant failure mode was associated with the plastic deformation of the tooling. Testing was performed to gather sufficient data to allow for the development of a lifing model. Isothermal tensile and fatigue tests were …
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Autonomic thermal switch based on phase transition alloys
Thermal management opens the new era of next generation electronic and thermal devices. Research on nano-scaled autonomic thermal switching is lacking because the suitable material is hard to synthesis. Our approach is utilizing the phase change property of eutectic/eutectoid materials. Triggered …
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MOSFET-based MMC for low-voltage DC distribution networks
… MOSFETs was then investigated. In addition, thermal measurement was developed to verify the loss calculation. A detailed converter design was conducted with current control methods to eliminate circulating current distortion for single-phase MOSFET MMC. Then a single-phase 5-level MMC …
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Multidisciplinary research in Raman spectroscopy, phase imaging and their applications in heat transfer
… interests in the high spatial resolution thermal characterization techniques. Although great improvement has been made in temperature probe, heat flux measurement and thermophysical properties characterization especially for solid-state materials and structures, precision thermal …
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Thermal analysis of biochemical systems
… or radio-labeled tag is necessary to perform the measurement. The heat absorbed during the unfolding event(s) is directly measured. However, current commercial DSC instruments suffer from high protein consumption (especially when compared to other labeled techniques), low sensitivity, and slow …