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Full-Text Articles in Mechanical Engineering
Molecular Modeling Of Epon 862-Detda / Carbon Composites, Cameron Hadden
Molecular Modeling Of Epon 862-Detda / Carbon Composites, Cameron Hadden
Dissertations, Master's Theses and Master's Reports - Open
The thermoset epoxy resin EPON 862, coupled with the DETDA hardening agent, are utilized as the polymer matrix component in many graphite (carbon fiber) composites. Because it is difficult to experimentally characterize the interfacial region, computational molecular modeling is a necessary tool for understanding the influence of the interfacial molecular structure on bulk-level material properties. The purpose of this research is to investigate the many possible variables that may influence the interfacial structure and the effect they will have on the mechanical behavior of the bulk level composite. Molecular models are established for EPON 862-DETDA polymer in the presence of …
Understanding Chassis Inputs From The Rear Suspension Of A Snowmobile, Jamie L. Kleinendorst
Understanding Chassis Inputs From The Rear Suspension Of A Snowmobile, Jamie L. Kleinendorst
Dissertations, Master's Theses and Master's Reports - Open
Today’s snowmobile industry faces great challenges in the field of noise & vibration. The area of main concern is the pass-by noise restriction defined by the Society of Automotive Engineers (SAE) test standard J192, with a maximum sound pressure level of 78 dB(A) being required by many states and national parks. To continue meet or beat this requirement without effecting machine performance, a deeper understanding of the sound transfer paths is required. This thesis examines the transfer paths created by the tunnel, rear suspension, drive shaft, and rubber composite track, with the primary source being suspension input through the ground. …
Development Of An In Situ Measurement Device For Obtaining Material Thermal Properties, Mark A. Hepokoski
Development Of An In Situ Measurement Device For Obtaining Material Thermal Properties, Mark A. Hepokoski
Dissertations, Master's Theses and Master's Reports - Open
This thesis presents a methodology for measuring thermal properties in situ, with a special focus on obtaining properties of layered stack-ups commonly used in armored vehicle components. The technique involves attaching a thermal source to the surface of a component, measuring the heat flux transferred between the source and the component, and measuring the surface temperature response. The material properties of the component can subsequently be determined from measurement of the transient heat flux and temperature response at the surface alone. Experiments involving multilayered specimens show that the surface temperature response to a sinusoidal heat flux forcing function is also …