David G. Barker and Dr. Matthew R. Jones, Mechanical Engineering Advances in the area of Optical Fiber Thermometry (OFT) are leading to more accurate temperature measurements in high-temperature environments. A typical OFT application is when the tip of an optical fiber is inserted into an environment where the temperature is to be measured. The other […]
Strain in Polysilicon Microbeams: The Relationship Between Beam Geometry And The Nominal Strain at Failure
Susan Norma, Candland Bromley and Dr. Larry L. Howell, Mechanical Engineering The objective of this research was to investigate the stress and strain behavior of microscopic cantilevered polycrystallin silicon (polysilicon) beams. A knowledge of this behavior is necessary to accomplish reliable mechanical design of micro-electro-mechanical systems (MEMS). In order to better understand the mechanical behavior […]
Cad Tools for Thermal Growth Research
C. Porter Bassett and Dr. C. Greg Jensen, Mechanical Engineering For my project I developed two tools to aid in manufacturing research that is currently being conducted in the Mechanical Engineering Department. This research is about milling, a type of manufacturing where metal is machined bye a spinning cutting tool, very similar to a drill […]
Apparatus to Measure the Performance and Manufacturability of the Multiple-Layer Floating-Opposing Arm Centrifugal Force Clutch
Derek Wright and Dr. Robert Todd, Mechanical Engineering Centrifugal force clutches are used around the globe in devices from washing machines to garden tillers. Considering methods of reducing the cost of such clutches, the Utah Center of Excellence for Compliant Mechanism Research developed a fully compliant version, known as the Floating- Opposing Arm Centrifugal Force […]
Optical Measurements of Diesel Soot Formation
Michael Joseph Richards and Dr. Dale Tree, Mechanical Engineering Introduction The purpose of this project was to aid in the research of Kenth Svensson, PhD. student at BYU. I was able to perform many vital tasks in preparation for data acquisition. The proposal which we submitted named three tasks which were measuring and mapping the […]
Comparison of the Variance in the R-Value Calculated Using the Power Law in IF Steel to Experimental Measurements
Craig Przybyla and Dr. Brent Adams, Mechanical Engineering As advances in engineering and technology increasingly require engineers and scientists to work in smaller length scales, they must have a greater understanding about how materials and their properties behave at these scales. This is true particularly in the field of mechanical engineering with the development of […]
Static Stability of Micro-Air Vehicles
Griffiths, Stephen; Knoebel, Nathan; Reimann, Daniel; Ostler, Jon with Dr. Jerry Bowman, Mechanical Engineering Objective The purpose of this research was to find the optimal combination of three static stabilityenhancing features: dihedral angle, vertical position of center of gravity, and tail volume ratio. Procedure Five test aircraft were built using a computer aided foam-cutting machine. […]
New Constant-force Mechanism Configurations
Bart D. Frischknecht and Dr. Larry L. Howell, Mechanical Engineering In machine design it is often desirable to correlate output force with displacement. Incorporating a translational spring into the design creates a linear relationship between force and displacement. In contrast, if a constant output force is desired independent of displacement, solutions include pneumatic or hydraulic […]
Behavior of Stacked Ortho-Planar Springs in CVT’s
Marc P. Christenson and Dr. Robert H. Todd, Mechanical Engineering Introduction Compliant mechanisms are mechanical devices that achieve their motion from the deflection of flexible members rather than rigid links and moveable joints. One such mechanism using compliant design is an ortho-planar spring. Ortho-Planar Springs Ortho-planar springs, or OP-springs, are thin circular or polygon shaped […]
Fatigue Testing a Laminated Compliant Clutch
Daniel Brown and Dr. Robert H. Todd, Mechanical Engineering Compliant mechanisms derive motion from flexible segments, rather than from joints. A BYU student, Nathan Crane, used compliant design concepts to develop a prototype centrifugal clutch.1 Manufacturing considerations led to a design incorporating many layers rather than a single solid piece.2 Further testing verified the engagement […]
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