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Impacts of Kinematic Links with a Granular Material
(2009-06-26)
The impact of kinematic links into a granular material is studied. In the impact process through the granular material defined as a conglomeration of discrete solids, the most important force governing the motion of a body ...
Investigation into the Effects of Tool Geometry and Metal Working Fluids on Tool Forces and Tool Surfaces During Orthogonal Tube Turning of Aluminum 6061 Alloy
(2009-11-20)
Orthogonal Metal Cutting has evolved as a significant way of analyzing the mechanics involved in the art of metal cutting. An orthogonal tube turning apparatus was constructed and validated. The instrument was used to ...
Compression Response and Modeling of Interpenetrating Phase Composites and Foam-Filled Honeycombs
(2009-08-03)
Although multiphase materials with discrete, dispersed and/or embedded phases in a matrix have been evolving over the years, there are limitations in terms of the degree of concentration of the secondary phase that can be ...
Principal Component Regression Models for Thermo-Mechanical Reliability of Plastic Ball Grid Arrays on Cu-Core and No Cu-Core PCB Assemblies in Harsh Environments
(2009-05-21)
In the current work, Goldmann constants and Norris-Landzberg acceleration factors have been developed for eutectic Tin Lead and Lead free solders (SAC 305) with the help of statistical tools including Principal Component ...
Alternate In-Situ Environmental Testing System by Matrix Design
(2009-03-30)
Compared with the existing in-situ environmental testing system, this alternative one got significant improvement on measuring capacity, total cost, as well as number of connections that must be made between the hardware ...
Sound transmission loss of composite sandwich panels
(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 ...
A study of the prediction of vibration-induced fretting corrosion in electrical contacts
(2009-12-17)
It is generally recognized that fretting corrosion is one of the major failure mechanisms in electrical contacts. The negative effects of fretting corrosion were found in many areas such as aerospace, automobile, electrical ...
Modeling and Analysis of a PEM Fuel Cell System for a Quadruped Robot
(2009-07-15)
The polymer electrolyte membrane fuel cell is a prospective alternative energy conversion device that has environment-friendly characteristics. It has not only electrochemical reaction but also coupled thermal fluid ...
Simulation of the Effects of Acoustic Noise on MEMS Gyroscopes
(2009-07-08)
Recent advances in MEMS technology have resulted in relatively low cost gyroscopes and accelerometers. The low cost of these devices has led to inexpensive inertial measurement systems, opening up a wide variety of possible ...
Explicit Finite Element Modeling in Conjunction with Digital Image Correlation Based Life Prediction of Lead-Free Electronics under Shock-Impact
(2009-08-12)
Increasing demand for smaller consumer electronics with multi-function
capabilities has driven the packaging architectures trends for the
finer-pitch interconnects thus increasing chances of failure of the
electronic ...