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Full-Text Articles in Engineering
Fiber Optic Microdeformation Sensors For Smart Structures, Lawrence S. Criscione
Fiber Optic Microdeformation Sensors For Smart Structures, Lawrence S. Criscione
Opportunities for Undergraduate Research Experience Program (OURE)
When optical fibers are stressed, the deformations at the core-cladding interface induce signal attenuation. Because of their durable physical properties (high melting point) optical fibers can be embedded into certain composite materials at the manufacturing stage. Stresses on the composite induces stresses on the embedded fiber. The amount of stress on the fiber, and thus the stress on the composite, can be determined by measuring the attenuation of a signal passing through the fiber. Force was applied to a single mode and a multimode fiber in a microbend inducing plate, and the attenuation this stress created was measured.
Analysis Of Turnability For A Three Terminal Microwave Network, Michael J. Bahr
Analysis Of Turnability For A Three Terminal Microwave Network, Michael J. Bahr
Opportunities for Undergraduate Research Experience Program (OURE)
Three-terminal microwave networks can be shown to exhibit qualities that would make them desirable to be used as multiple terminal devices. Using microwave theory, where instantaneous voltage is a function of position on the line, this situation will be examined. These devices use the interference principle of propagating waves as the basis of their characteristics. This investigation will probe a three- terminal microwave network with one input and two output. This configuration acts similar to a splitter where the outputs may be controlled. These three terminals, plus manipulation of the lengths of each side, actually makes this a four terminal …
Fiber Optic Fabry-Perot Sensors For Smart Structures, Thomas K. Edmondson
Fiber Optic Fabry-Perot Sensors For Smart Structures, Thomas K. Edmondson
Opportunities for Undergraduate Research Experience Program (OURE)
Optical fiber sensors promise to play a large role in the development of smart structures which have the ability to continuously monitor themselves for internal and external structural deformation, and even actively change shape. This investigation studies one such sensor based on a fiber optic Fabry-Perot interferometer, which detects the displacement between two points of a material. Sensor theory and construction are discussed, and the tools used to analyze sensor output are developed. The interferometer is then tested by attaching it to a large cantilever beam which is deflected to produce strain. This experimental data is then used to determine …
Optimizing Energy Usage In A Solar-Powered Vehicle, William R. Macneil
Optimizing Energy Usage In A Solar-Powered Vehicle, William R. Macneil
Opportunities for Undergraduate Research Experience Program (OURE)
The University of Missouri - Rolla (UMR) will be entering SUNRAYCE '93 and the World Solar Challenge and expects to excel in these solar-powered car races. Some of the factors involved in winning a race include efficiency, reliability, and high power. All of these are important considerations, but will be ineffective unless appropriately harnessed by a power management scheme appropriate to a race strategy. The power management scheme will be used to efficiently and effectively distribute available power to the car's systems throughout a race day. My goal was to produce a software framework into which the specifications and performance …