This Is AuburnElectronic Theses and Dissertations

Browsing by Author "Crocker, Malcolm"

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Characterization and Dynamic Analysis of Damping Effects in Composite Materials for High-Speed Flywheel Applications 

Moreira, Alfonso (2007-05-15)
The directional mechanical properties of carbon fiber reinforced composite materials make them suitable for components of flywheel energy storage systems. Particularly the hub-rim interface is a component where fiber ...

Design Optimization and Health Monitoring for Multi-Directional Composite Flywheel Energy Storage Systems 

Hai, Xin (2006-08-15)
Flywheels are used to store kinetic energy through the rotation of an inertial mass, which usually rotates at very high speeds. Generally, that energy can be extracted (using a motor-generator system) in the form of ...

An Empirical and Computational Investigation into the Acoustical Environment at the Launch of a Space Vehicle 

Smith, Wesley, III (2013-12-04)
During the launch of a space vehicle, the intense sound pressure levels created around the vehicle can excite the vehicle itself, payload, launch tower, and ground support systems into hazardous and potentially damaging ...

Heuristic Optimization Methods for the Characterization of Dynamic Mechanical Properties of Composite Materials 

Hornig, Klaus (2007-05-15)
Generally speaking, of the fundamental dynamic mechanical properties - mass, damping, and stiffness, damping is usually the most difficult to quantify. This is perhaps particularly true for composite materials which tend ...

Measurement of Absorption Coefficient of Road Surfaces Using Impedance Tube Method 

Vissamraju, Krishnasudha (2005-08-15)
The absorption coefficient of dense and porous road surfaces has been measured using core samples with 4 and 6-inch diameter impedance tubes. The 6-inch tube allows the absorption of a large core sample surface to be ...

Sound transmission loss of composite sandwich panels 

Zhou, Ran (2009-05-04)
Light composite sandwich panels are increasingly used in automobiles, ships and aircraft, because of the advantages they offer of high strength-to-weight ratios. However, the acoustical properties of these light and stiff ...

Static, Dynamic and Acoustical Properties of Sandwich Composite Materials 

Yu, Zhaohui (2007-05-15)
Sandwich composite materials have been widely used in recent years for the construction of spacecraft, aircraft, and ships, mainly because of their high stiffness-to-weight ratios and the introduction of a viscoelastic ...

Vibration and Acoustical Properties of Sandwich Composite Materials 

Li, Zhuang (2006-05-15)
In applications where the use of lightweight structures is important, the introduction of a viscoelastic core layer, which has high inherent damping, between two face sheets, can produce a sandwich structure with high ...