Volume 1, Issue 1 (2008) | American Journal of Engineering and Applied Sciences

Closed Die Forging Geometrical Parameters Optimization for Al-MMC

M. Jolgaf — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.1.6

Demand for lighter and stiffer products has been increasing in the last few years especially in automobile manufacturing. The closed die forging process of Metal Matrix Material (MMC) is presented as ...

Comparisons of Heat Transfer Performance of a Closed-looped Oscillating Heat Pipe and Closed-looped Oscillating Heat Pipe with Check Valves Heat Exchangers

P. Meena — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.7.11

This research was to study the comparisons of heat transfer performance of closed-looped oscillating heat pipe and closed-looped oscillating heat pipe with check valves heat exchangers with R134a, Eth...

Development of Wireless Electric Concept Powering Electrical Appliances

Hanita Daud — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.12.15

This study presents a concept of harvesting and transferring energy to a low power electrical appliances using wireless technology where interconnecting wires are not available. This study was a groun...

A Study of Thermal Contact using Nonlinear System Identification Models

M.H. Shojaeefard — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.16.23

One interesting application of system identification method is to identify and control the heat transfer from the exhaust valve to the seat to keep away the valve from being damaged. In this study, tw...

Source Couple Logic (SCL): Theory and Physical Design

Mohamed Azaga — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.24.32

This study describes and presents the analysis for the Source-Coupled Logic (SCL) inverter as will as the effect of submicron layout parasitics. The SCL inverter circuit model and its operation is def...

Air Blast Freezing of Lime Juice: Effect of Processing Parameters

Wasan Theansuwan — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.33.39

This research characterized the effects of air velocity and lime juice layer thickness on freezing time. In the experiment, the air velocity of the freezer and the thickness of the lime juice layer we...

A Review on Construction Technologies that Enables Environmental Protection: Rubberized Concrete

G. Senthil Kumaran — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.40.44

Throughout the world, the disposal of used tires is a major environmental problem causing environmental hazards such as breeding ground for mosquitoes, producing uncontrolled fire and they are contami...

Comparison of Different Control Strategies in GA-Based Optimized UPFC Controller in Electric Power Systems

Seyed Abbas Taher — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.45.52

This study presents a study of the application of a Unified Power Flow Controller (UPFC) to control power transmission, generator terminals voltage and better damping of Low Frequency Oscillation (LFO...

Synthesis and Charaterization of Magnesium Zinc Ferrites as Electromagnetic Source

Noorhana Yahya — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.53.56

Fabrication of Mg1-XZnXFe2O4 (where x = 0.2, 0.3, 0.4 and 0.5) samples using a conventional technique is reported. Oxides of magnesium, zinc and iron with purity of about 99.99% were mixed with distil...

Effect of Pulsating Circular Hot Air Jet Frequencies on Local and Average Nusselt Number

Rozli Zulkifli — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.57.61

The study was carried out to determine the effect of pulsating frequencies on the local and average heat transfer characteristic of a heated circular air jet. The velocity profile of a heated circular...

Rarefied Gas Flow Modeling inside Rotating Circular Cylinder

N. Pourmahmoud — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.62.65

In this study a rarefied gas flow inside a rotating circular cylinder by means of direct simulation Monte Carlo (DSMC) method is investigated. A rarefied gas is supposed to be contained in a cylindric...

Decentralized Controller Design for Static Synchronous Compensator Using Robust Quantitative Feedback Theory Method

Seyed Abbas Taher — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.66.75

The Static Synchronous Compensator (STATCOM) provides shunt compensation in similar way to the Static VAR Compensator (SVC) but utilizes a voltage source converter rather than capacitors and reactor. ...

Investigation of Pile- Soil Interaction Subjected to Lateral Loads in Layered Soils

A. Avaei — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.76.81

To stabilize infrastructures such as tall buildings, bridges, etc., piles are used to resist lateral loads created from earth pressure, wind, waves and earthquake extensively. Pile design requires und...

Neural Network for Performance of Glass Fibre Reinforced Polymer Plated RC Beams

N. Pannirselvam — 2008-03-31

American Journal of Engineering and Applied Sciences, Published online: 31 March 2008; doi:10.3844/ajeassp.2008.82.88

Prediction of the properties other than moment carrying capacity of GFRP plated RC beams does not have any straight forward mechanism. This study presents a General Regression Neural Network (GRNN) ba...