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Acoustic Metamaterials: Air Permeable Super Sound Attenuators and Acoustic Metalenses
(2019-07-23)
In recent decades, acoustic metamaterials have become more practical for diverse applications of sound manipulation, rather than academic curiosities and theoretical derivations. This kind of artificial material demonstrates ...
Characterization of Moisture and Thermally Induced Die Stresses in Microelectronic Packages
(2017-09-20)
Moisture has been one of the major concerns for package designers and reliability researchers. It is well-known that high humidity combined with high temperature can cause a number of failure modes to electronic devices, ...
Use of sample entropy to study equine gait lameness.
(2017-08-21)
Administration of a sedative is occasionally required to perform a nerve or joint block
in the horse during the course of a lameness examination. Because sedatives have analgesic
properties, we investigated as to whether ...
Effects of Aging on Microstructure and Mechanical Properties of Lead Free Solder Materials
(2018-12-03)
Lead free solder materials are widely used in the electronic packaging industry due to environmental concerns. However, experimental testing and microstructural characterization have revealed that Sn-Ag-Cu (SAC) lead free ...
Thermal Modeling of the Laser-Powder Bed Fusion Process
(2018-07-24)
Parts fabricated using laser-based additive manufacturing (AM) methods, such as laser-powder bed fusion (L-PBF) receive very high, localized heat fluxes from a laser within a purged, shielding gas (i.e. argon) environment ...
A Nonlinear Model Predictive Control Algorithm for an Unmanned Ground Vehicle on Variable Terrain
(2016-12-12)
This thesis presents a Nonlinear Model Predictive Controller (NMPC) for an Unmanned Ground Vehicle (UGV) capable of controlling the vehicle over both smooth and rough terrain using measurements from GPS and a Light Detection ...
Experimental Evaluation of Immersion-Cooled Strategies for High-Powered Server Modules
(2012-07-19)
Cooling of server-level high-performance computing equipment is an ongoing challenge. Early approaches, based almost entirely on forced air cooling, resulted in unsustainably high energy usage in the air-conditioning units. ...
Investigation of Heat Transfer and Bonding During Material Jetting Additive Manufacturing
(2018-11-15)
Optimum process parameters are critical to achieve deposits of high metallurgical integrity during material jetting additive manufacturing. The most important process parameters include deposition temperature, substrate ...
Parametric Development of Wire 3D Printing
(2015-12-11)
Currently commercialized additive manufacturing techniques offer great detail in small, difficult to produce parts. They are also slow, limited in scale, and expensive. An additive technique that can rapidly produce large ...
Application of Low Melt Alloys as Compliant Thermal Interface Materials: A Study of Performance and Degradation under Thermal Duress
(2016-07-08)
Thermal interface materials (TIMs) are a crucial part of thermal management in micro-electronics and often can account for a significant portion of the overall thermal budget. Generally, materials with high thermal ...