Skip Navigation LinksVolume : Volume 18 No.1 2009

  
  
  
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thermal_characterization_of_alumina_trihydrate_ath_and_flammability_studies_of_ath_filled_low_density_polyethylene.pdfTHERMAL CHARACTERIZATION OF ALUMINA TRIHYDRATE (ATH) AND FLAMMABILITY STUDIES OF ATH FILLED LOW DENSITY POLYETHYLENE
  
ABSTRACT :
Alumina trihydrate (ATH) which is a non-toxic and environmentally friendly flame retardant was characterized using Thermogravimetric Analysis (TGA) and Differential   Thermal Analysis (OTA). The effect of ATH content on flammability properties of LOPE was  determined using Limiting Oxygen Index (LOI) and smoke density test. The thermal   characterization studies showed that the temperature range for ATH to effectively act as a   flame retardant is from 200°C to 350°C. In water release test, it was also determined that the   release of the chemically-combined water in ATH increased with increasing temperature.   The LOI test showed that the flame retardancy of LOPE increased with increasing ATH  content and decreasing ATH particle size. The smoke density test of a burning ATH filled  LOPE proved that ATH is also effective in reducing smoke density. The study also showed that the viscosity of ATH filled LOPE decreased with increasing ATH particle size.     

KEYWORDS: Alumina trihydrate, flame retardant, low density polyethylene, thermal  characterization, flammability studies       

Author: Mazyiar Sabet, Azman Hassan, Mat Uzir Wahit, Chantara Thevy Ratnam
Year: 2009
the_flying_vehicle_optimum_flight_trajectory_design.pdfTHE FLYING VEHICLE OPTIMUM FLIGHT TRAJECTORY DESIGN
  
ABSTRACT:
A design procedure is suggested for the flying vehicle optimal transfer from the initial to a final state in one plane, in the central gravitation field, in empty   space and under the action of fixed thrust. The given study considers the flying   vehicle motion control algorithms built proceeding from the optimal control applied   theory and using a linear programme by the angle of pitch. The comparison of these flying vehicle motion control algorithms was carried out.     

KEYWORDS : Equations of flying vehicle motion, flying vehicle, optimal control            

Author: V. P. Nesterov
Year: 2009
teknik_pembinaan_semula_kemalangan_jalan_raya.pdfTEKNIK PEMBINAAN SEMULA KEMALANGAN JALAN RAYA
  
ABSTRACT:
Accident investigation and analysis is used to provide the guide of who was at fault and also provide information of how the accidents occur as well as the cause. Road accident   analysis can be done more accurate if all the information on that particular accident is gathered with more ehensive and systematic way. The following information need to be gathered: (a) information at the accident site; (b) information from the accident victim and witness who saw  the accident,· (c) information from the vehicle technical book; (d) technical examination on the   damage of the vehicle involved and (e) accident reconstruction. The information gathered can be  used to conduct the accident analysis with mathematics and scientific technique. The vehicle   speed can be calculated using mathematical unique. Accident analysis can provide information   on the vehicle speed prior to the accident, accident angle and most important, this method   can provide information whether this accident can be avoided from occurring if the driver follow   the allowable speed limit This article will also elaborate the method need to be done in the road   accident investigation and analysis.             
   
Author: Talib Ria Jaafar, Mohd Shafii Mohd Tahir, Ramlan Kasiran
Year: 2009
paper_1.pdfDESIGN AND ANALYSIS OF SLOT TYPE EMBEDDED PERMANENT MAGNET GENERATOR
  
ABSTRACT :
Permanent Magnet Generator (PMG) is getting popular lately in many applications due to its low production cost, simple design, small size, and light weight. However,   the current design of PMG suffers from dislocation of permanent magnet that located around the outer surface of the rotor especially at high speed. This may cause instability in its output voltage. This paper presents a new design of PMG which addresses the problem mentioned   above. In this PMG, the permanent magnets are embedded inside the rotor. This would lead to a more stable output voltage. Both the theoretical and experimental results of the proposed  PMG are presented and discussed. The result confirms that the new design of PMG is more   suitable for high speed than the existing design.       

KEYWORDS : Permanent Magnet Generator, rotational generator, slot type, losses,   Permeance Analysis Method, rotor radius, slot number.

Author: M. Norhisam, M. Norafiza, M. Syafiq, I. Aris, M.Nirei, H.Wakiwaka, Abdul Razak J.
Year: 2009
design_of_automatic_scrambled_egg_cooker.pdfDESIGN OF AUTOMATIC SCRAMBLED EGG COOKER
  
ABSTRACT :
The total design of an automatic scrambled egg cooker is presented in this   paper. A market investigation on existing products similar to the current design indicated the potential for an automatic scrambled egg cooker. A dynamic document called product design specification was prepared as design guides. Four design concepts of automotive egg cooker   were developed using various methods such as the gallery method and evaluation was   performed in which, the best concept was chosen for further improvement. The design was  improved during embodiment design stage. Detailed design was produced using 30 solid  modeling CAD system. Partial value analysis of this product was reported. The final selected   concept of automatic scrambled egg cooker use a combination of electromechanical devices   to achieve the cooking of scrambled egg. The best concept features modular components which can be used as stand-alone products. The product is very compact and it has the  capability to break the egg easily, able to cook scrambled egg, salt and pepper can be mixed, has the feature to control the cooking time, it knows when cooking is completed, can be placed on the counter and has on and off switch button. 

KEYWORDS : Conceptual design, egg cooker, total design, scrambled eggs

Author: Sapuan S.M., Leman z., Rahman M.A., Oshkour A.A. and
Year: 2009
design_and_analysis_of_slot_type_embedded_permanent_magnet_generator.pdfDESIGN AND ANALYSIS OF SLOT TYPE EMBEDDED PERMANENT
  
ABSTRACT:
PermanentMagnetGenerator(PMG)isgettingpopularlatelyinmany applicationsduetoitslowproductioncost,simpledesign,smallsize,andlightweightHowever, thecurrentdesignofPMGsuffersfromdislocationofpermanentmagnetthatlocatedaround theoutersurfaceoftherotorespeciallyathighspeed.Thismaycauseinstabilityinitsoutput voltage.ThispaperpresentsanewdesignofPMGwhichaddressestheproblemmentioned above.InthisPMG,thepermanentmagnetsareembeddedinsidetherotor.Thiswouldlead toamorestableoutputvoltage.Boththetheoreticalandexperimentalresultsoftheproposed PMGarepresentedanddiscussed.TheresultconfirmsthatthenewdesignofPMGismore suitableforhighspeedthantheexistingdesign.

KEYWORDS:PermanentMagnetGenerator,rotationalgenerator,slottype,losses, PermeanceAnalysisMethod,rotorradius,slotnumber.

Author: MNorhisam,MNorafiza,MSyafiq,I.Aris,M. Nirel,H.   Wakiwaka  and   Abdul Razak J.
Year: 2009