Three composite heat sinks in the shape of a disk, a cylinder, and a cylinder with vertically projecting fins were made by applying a thin (0.4 – 0.7 mm) zinc layer onto ABS polymer cores using wire-arc spraying. The ...

Repeated loading causes the development of microdamage in bone and may lead to failure by fatigue. Microdam age in the form of microcracks occurs naturally in bone due to the loads experienced during day-to-day activities, ...

Unwanted sound from cooling fans has been a significant obstacle that limits the performance of data center Hard Disk Drive (HDD) storage systems. Acoustic metamaterials (AM) can be a solution to this problem. AM’s can ...

Vortex shedding may occur in tube arrays, resulting in strong excitation forces at discrete frequencies. In the past the Strouhal numbers governing vortex shedding in these systems were determined primarily by experiment. ...

Ireland set out to produce 33% of its electricity demand from renewable sources by 2020 and reduce emissions to the level of 1990 in accordance with the Kyoto agreement. These targets require investments in a diverse ...

Throughout the world, almost every machine that moves requires the use of bolts in one form or another. Bolts, or Fasteners, are made in bolt making machines by a process of cold forming. At a particular stage in the bolt ...

The observations made during this research which, to the best knowledge of the author have not been previously mentioned in literature, were as follows: -- Loss of contact between the die and workpiece when rolling small ...

Solar and thermal energy conversion are two major renewable energy technologies highly sought after in the past two decades by academia, industry, and policymakers. Besides the traditionally large-size solar and thermal ...

The motion of a bubble through a fluid has attracted considerable scientific attention for many years due to the complex, interesting fluid dynamics in their wakes, coupled to a rich and varied interface motion. Additionally, ...