Volume 4, Issue 3 (2007) | American Journal of Applied Sciences

Evaluation of Fuel Consumption and Exhaust Emissions During Engine Warm-up

M. Al-Hasan — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.106.111

Engine exhaust emission and fuel consumption during warm-up period was experimentally investigated. Experiment was conducted on a four-stroke four-cylinder spark ignition engine alternatively equipped...

Studies on Some Properties of Quality and Performance in Wood Windows

Tuncer Dilik — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.112.121

The determination of some quality and performance properties of windows, made of tree species used frequently in industrial window manufacturing and the effects of tree species on those properties hav...

Finite Element Simulation and Parametric Studies of Perfobond Rib Connector

Suhaib Yahya Kasim Al-Darzi — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.122.127

Simulating the push-out test and conducting parametric study using finite element model are conducted using perfobond connectors. The finite element model was verified through comparing with push-out ...

Preparation and Properties of Copolyanhydrides Based on 2-Hexadecylsuccinic Acid and Sebacic Acid

Yousef Hamdan — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.128.132

Poly(2-hexadecylsuccinic acid-sebacic acid) (P(HSA-SA)) copolymers have been prepared by melt polycondensation. The copolymers were characterized by FT-IR, 1HNMR, gel permeation chromatography (GPC), ...

The Characterization of Al Bond Pad Surface Treatment in Electroless Nickel Immersion Gold (ENIG) Deposition

M.K. Md Arshad — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.133.141

This study reports a number of experiments that were designed to characterize aluminum bond pad surfaces prior to electroless nickel immersion gold (ENIG). In the ENIG process, aluminum bond pads need...

Diamond Pressing on the Wear Resistance and the State of Heat Treated Alloy Steel Surfaces

Ubeidulla Al-Qawabeha — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.142.145

In manufacturing processes, surfaces and their properties are as important as the bulk properties of the materials. Surface treatment is an important aspect of all manufacturing processes. It has been...

Emissivity of Triangular Surfaces Determined by Differential Method: From Homogenization to Validity Limit of Geometrical Optics

Taoufik Ghabara — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.146.154

Geometric optics approximation for emissivity from triangular surfaces was compared with exact scattering predictions from electromagnetic theory. Rigorous electromagnetic scattering theory was numeri...

Designing of PID Controller for Discrete Time Linear System Using Balanced Approach Reduced Order Model

C.S. Ravichandran — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.155.159

Modeling physical systems usually results in complex high-order dynamic models. It is often desirable to approximate these models by simpler models with reduced order. This study deals with the design...

Methodology of Compliant Mechanisms and its Current Developments in Applications: A Review

Solehuddin Shuib — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.160.167

Traditional rigid-body mechanisms consist of a number of components to implement their functions. Therefore they face problems such as backlash, wear, increase in part-count, weight, assembly cost and...

Diagnosis of MV Oil Filled Cable Terminations with X-Ray Imaging and Infrared (IR) Thermography

Mohd. Rafi Adzman — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.168.170

A main purpose of doing a diagnostic in cable system including its accessories such as impregnated paper insulated oil filled cable termination is to predict failure before they occur. Those cable and...

Simplification of Sun Tracking Mode to Gain High Concentration Solar Energy

Omar Aliman — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.171.175

Power conversion from solar thermal energy to electrical energy is still very cost-intensive. Serious effort has to be given in the development of the concentrator or heliostat structure expenditure w...

Tracking Error Analysis of a Rotation-Elevation Mode Heliostat

Omar Aliman — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.176.180

For the past few years, great efforts have been done in improving the tracking accuracy of a newly proposed rotation-elevation tracking mode heliostat. A special simulation program has been developed ...

Monitoring System for Uninterruptible Power Supply

S.A.Z. Murad — 2007-03-31

American Journal of Applied Sciences, Published online: 31 March 2007; doi:10.3844/ajassp.2007.181.183

In industrial process today, reliability of equipment is very important. Power supply must be able to cater the need of industrial process. In case of power failure, backup power supply system must be...