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Articles 61 - 62 of 62
Full-Text Articles in Engineering
Development Of A System To Quantify Perpendicular Forces Between The Foot And A Shoe, Samuel W. Barstow
Development Of A System To Quantify Perpendicular Forces Between The Foot And A Shoe, Samuel W. Barstow
Honors Theses
There are a variety of fit systems available in the outdoor footwear industry. Each of these fit systems tightens the shoe around the wearer’s foot in a different way. In this project an apparatus was developed to quantify perpendicular forces between the foot and a shoe. This apparatus utilized piezoresistive sensors that, when combined with an excitation voltage and an inverting operational amplifier, pass a voltage that is proportional to the force applied to the sensing area. A significant section of this project was dedicated to troubleshoot this apparatus in order to produce nearly linear calibration curves. The apparatus was …
Testing The Photocatalytic Oxidation Abilities Of Titania-Silica Aerogels Fabricated Using The Rapid Supercritical Extraction Method, Lauren B. Brown
Testing The Photocatalytic Oxidation Abilities Of Titania-Silica Aerogels Fabricated Using The Rapid Supercritical Extraction Method, Lauren B. Brown
Honors Theses
Indoor air has been shown to be four to five times more polluted than outdoor air. Titania-silica aerogels can photocatalytically oxidize volatile organic compounds found in indoor air. Aerogels are the lightest known solid with 90-99% air by volume. Titania-silica aerogels were fabricated in seven to nine hours using the Rapid Supercritical Extraction method and properties compared well to those published in the literature. Bulk density ranges between 0.025 and 0.04 g/cm3. Skeletal density ranges between 1.75 and 2.75g/cm3. BET surface area ranges between 200 and 700 m2/g. BJH pore distribution showed distinct differences between silica and titania aerogels. FTIR …