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OALib Journal期刊

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匹配条件: “Ali I. Al-Mosawi” ,找到相关结果约121006条。
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FORMATION HYBRID FLAME RETARDANT AND ITS EFFECT ON THERMAL RESISTANCE OF ARALDITE RESIN COMPOSITE
Ali I .Al-Mosawi
Academic Research International , 2012,
Abstract: Investigations on zinc borate-Sb2O5 have been performed up to (3000oC) to increase the flame retardancy of araldite composite .A surface layer from zinc borate- Sb2O5 with (4mm) thickness was used and exposed to a direct flame generated from Oxyacetylene torch withexposure intervals [10,15, 20mm] and study the range of resistance of retardant material layer to the flames and protected the substrate . The results show that the mixing ratio of 3:1(zinc borate: Sb2O5) is the optimum mixing ratio which is obtaining the best result.
STRESS ANALYSIS OF CONICAL SHELL
Ali I. Al-Mosawi,Mustafa A. Rijab
Academic Research International , 2012,
Abstract: This paper studies the dynamic stresses and deformation of stiffened conical shell and compared between the steady state and transient analysis. The same conical shells used in static analysis of conical shell were taken with suddenly applied pressure. The element used isa modified eight-node superparametric shell element. The effects of the number and crosssection area of stiffened shell are analyzed. The results are compared with available research and MSCNASTRAN.
Effect of Austempering Time on Microstructure and Wear Resistance of Ductile Iron Castings  [PDF]
Mustafa A. Rijab, Ali I. Al-Mosawi
Open Access Library Journal (OALib Journal) , 2014, DOI: 10.4236/oalib.1101032
Abstract: An experimental investigation was carried out to study the structure of ductile iron castings which were selected to perform the investigation: 1.4% Ni - 0.3 Mo and 2.4% Ni - 0.3 Mo. After austenitizing at 880℃ for 1.3 hr, the two alloys were austempered at 250℃ and 350℃ for time intervals of 60, 120, 240 minutes. Microstructure observation and measurement of UTS, and adhesive wear resistances were reported as functions of austempering time. The results also showed that the obtained structure properties are not believed to be the best possible, but rather they should be viewed as what can be expected with reasonable controls. Production of a conventional spare gear from austempered ductile iron was aimed and concluded at a later stage. The same casting and treating conditions attributed to the optimum structure properties were used for production of the gear.
Technological Procedure for Recycling of PET Waste for Sustainable Environment Concept Achievement  [PDF]
Ali I. Al-Mosawi, Shaymaa Abbas Abdulsada
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104327
Abstract:
In this research, polyethylene terephthalate bottles (PET) waste was added to styrene-butadiene rubber (SBR) to manufacture road bumps, as a technological procedure for recycling this PET waste, in order to maintain a clean and sustainable environment. Polyethylene terephthalate bottles were cut as grooved strips and added to bump SBR batch with various percentages (0 - 100 pphr). Mechanical tests were performed before and after the addition of PET waste including tensile strength, hardness, and resilience. Nanoparticles of carbon black, zinc oxide and sulfur were used, and compare the results with samples with micro particles additions. The result shows that the developed and manufactured bump SBR in this research conforms to the mechanical characteristics of the original bump model especially with nanoparticles additives, and the best results obtained with the nanoparticles additions.
THEORETICAL ESTIMATION TO FLEXURAL STRENGTH OF ARALDITE COMPOSITE USED FOR MANUFACTURING ELECTRICAL CIRCUITS PLATES
Ali I. Al-Mosawi,Muslim M. Ali,Ali R. Yousif,Saad M. Hamza
Academic Research International , 2012,
Abstract: In the present research theoretical method was used to calculated flexural strength of composite material consist of araldite resin with different weight percentage (20%,40%,60%) from carbon fibers, where Ansys program version (11) was used to study the effect of differentreinforcing under variation loading on flexural strength of composite material. The standard specification (ASTM D790) was used to fabricant the test specimens in Ansys program .The theoretical results shows that high flexural strength value for araldite resin after reinforcingwith carbon fibers due to high elastic modulus for these fibers and this strength will increase with increasing percentage of fibers .
FLAMMABILITY OF ARALDITE BASED COMPOSITE MIXED WITH INORGANIC RETARDANTS
ALI I. AL-MOSAWI,JALEEL K. AHMED,ALI R. YOUSIF,ALI J. SALAMAN
International Journal of Engineering Science and Technology , 2012,
Abstract: Flammability characteristics of araldite based composite mixed with inorganic hybrid flame retardant represent zinc borate - antimony trioxide as a surface layer(4mm) thickness have been studied by thermal erosion test . Antimony trioxide was added to zinc borate with various amounts (10%,20% and 30%) to forming a hybrid flame retardant for enhance the action of this material to react flame . The result composite material was exposed to a direct flame generated from Oxyacetylene torch (3000oC) with different flame exposure intervals (10,20mm), and studies the range of resistance of retardant material layer to the flames and protected the substrate. The optimum results were with large percentage from protective layer which is zinc borate-30% antimony trioxide and large exposed distance.
STUDY THE EFFECT OF ANGLE DORSIFLEXION ON BENDING STRESS OF PROSTHETIC PYLON
MUSLIM M. ALI,ALI I. AL-MOSAWI,JABBAR H.MOHMMED,ALI R. YOUSIF
International Journal of Engineering Science and Technology , 2012,
Abstract: Affecting millions of people worldwide, artificial limbs and prosthetics are major topics in the field of bio mechatronics. This paper will examine and describe in effect of angle dorsiflexion on bending stress limb technology, in particular focusing on prosthetic pylon. The theoretical part includes; analytical solution to find dorsiflexion angle and bending stress. In the numerical method, the finite element is used by employing ANSYS package to find bending stress with angle dorsiflexion with gait cycle and Von Misses stresses. Thus the prosthetic pylon was angle dorsiflexionthe value of stress bending will be increased with increasing of angle dorsiflexion.
INCREASING FLAMMABILITY RESISTANCE FOR AIRCRAFTS TIRES BY USING MAGNESIUM HYDROXIDE
Ali I. Al-Mosawi,Haider K. Ammash,Mohammad H.Al-Maamori,Abbass Hashim
Academic Research International , 2012,
Abstract: Aircraft tire must withstand and a wide range of operational conditions .When on the ground, it must support the weight of the aircraft. During taxi, it must provide a stable cushioned ridewhile resisting heat generation, abrasion and wear. When aircraft down ,the tire may be fired because high friction with ground. So to protect aircrafts tires from fires Magnesium hydroxide was used in various quantities (10%,20%,30%) as a flame retardant toenhancement flame retardancy for tires material. Magnesium hydroxide was added with master batch of tire and then exposed the resulting material to a direct flame generated from gas flame (2000oC) with flame exposure distance (10 mm), and study the range of tireresistance to the flame and the range protected of hydroxide addition . Method of measuring the surface temperature opposite to the flame was used to determine the heat transferred through tire material. The results was obtained from thermal erosion test shows improved flammability resistance for tire by added magnesium hydroxide and this resistance increased by increasing hydroxide percentage .
MECHANICAL PROPERTIES OF COMPOSITE MATERIAL REINFORCING BY NATURAL-SYNTHETIC FIBERS
Ali I. Al-Mosawi,Mohammad H.Al-Maamori,Zaynab A.Wetwet
Academic Research International , 2012,
Abstract: The mechanical properties of araldite matrix composites reinforced with hybrid palms - kevlar fibers were evaluated. There are indications that the incorporation of both fibers into a singlematrix which is araldite resin will stabilize mechanical properties and lowering manufacturing costs. In this research the impact strength, tensile strength, flexural strength, and hardnesswere studied for composite material reinforced with hybrid fibers for palms and Kevlar .These fibers were mixed with araldite resin in different reinforcement percentage (20%, 40%, and 60%) and the effect on the above mechanical properties were studied. It has shown animprovement in these mechanical properties after reinforcement by fibers the value of mechanical properties will increase with increasing percentage of reinforcement.
EXPERIMENTAL INVESTIGATION IN ZINC BORATE EFFECT ON FLAMMABILITY CHARACTERISTICS OF POLYMERIC COMPOSITE MATERIAL
Ali I. Al-Mosawi,Abbas A. Sakhir,Mushtaq T. Albdiry
Academic Research International , 2012,
Abstract: The main aim of this paper is to investigate flammability enhancement of araldite composite material reinforced by kevlar-carbon fibers by addition of a surface coating layer (4mm) thickfrom zinc borate. This system was exposed to a direct flame generated from oxyacetylene flame and gas flame under different exposure intervals (10,15, and 20mm), and study the range ofresistance of flame retardant material layer to the flames and protected the substrate where we used the method of measuring the surface temperature opposite to the flame where we obtained the better results with large exposed interval and large percentage from protective layer which is zinc borate (30%) for both types of flames , as well as the flame resistance will be increased with decrease the flame temperature .
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