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At the Division of Machine Elements, a research project called ’Wet Clutch Tribology’ is being carried out in cooperation with Statoil Lubricants R&D and Haldex Traction Systems AB. Haldex Traction is a supplier of all-wheel drive systems featuring an electronically-controlled limited-slip wet
In recent years there was a notable developmental leap in communications systems operating at microwave frequencies. In the dissertation, the goal is to demonstrate the challenges and to propose solutions that enable the successful design and realization of very wide band microwave
The exposure of parking garages to harsh weather conditions and vehicular traffic causes premature deterioration that can compromise structural integrity and pose safety hazards. In order to develop comprehensive and cost-effective strategies for evaluating the condition of their eighteen parking facilities, Montgomery
The accuracy of numerical methods in calculating the flow of backward facing steps in turbulent hypersonic flows is limited due to a lack of flow measurements. Such measurements are necessary to validate numerical techniques and turbulent models. The lack of measurements concerns
Templating ordered assemblies of magnetic oxide nanoparticles within self-assembled diblock copolymers of varying morphologies is an important problem with a wide applicability such as in electromagnetics, optical devices, metal catalysts, medicine and biology. In this thesis, the effects of different polymer structures
Free body diagrams of an Asphalt Roller were designed for several load cases and used for an optimisation study. Assumptions for the load calculations for each load case were carried out in MATLAB®.The Roller was built in I-DEAS® and the results were
Because of technological advancement, transistor dimensions are approaching the length scale of the electron Fermi wavelength, on the order of only nanometers. In this regime, quantum mechanical phenomena will dominate electron transport. Using InAs single quantum wells, we have fabricated Y-shaped electron…
A key platform technology for InP optical waveguide MEMS is developed. The novel waveguide design is entirely released from the substrate by sacrificial etching and the suspended waveguide is supported by lateral tethers. This allows free-standing, movable segments of waveguide while preventing
Title: AN ASYMPTOTIC ANALYSIS OF SPONTANEOUS IGNITION OF HYDROGEN JETS Analytical work is presented for the spontaneous ignition of a hydrogen jet emanating from a slot into air. A similarity solution of the flowfield was obtained. This was combined with the species
Title: Force Estimation Based Compliance Control of a Two Link Harmonically Driven Robotic Manipulator The estimation of external forces exerted on a robotic manipulator with harmonic drive gearing without a force/torque sensor is considered. Manipulator dynamics, together with motor current feedback are